Space Weather Message Code: ALTTP2 Serial Number: 1365 Issue Time: 2024 Oct 14 0032 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 14 0014 UTC Estimated Velocity: 545 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: WATA20 Serial Number: 1016 Issue Time: 2024 Oct 13 2042 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Oct 14: None (Below G1) Oct 15: None (Below G1) Oct 16: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4724 Issue Time: 2024 Oct 12 2045 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4723 Valid From: 2024 Oct 10 1350 UTC Now Valid Until: 2024 Oct 13 0300 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1673 Issue Time: 2024 Oct 12 1051 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 12 1051 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1947 Issue Time: 2024 Oct 12 1036 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1946 Valid From: 2024 Oct 10 1506 UTC Now Valid Until: 2024 Oct 12 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4723 Issue Time: 2024 Oct 12 1034 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4722 Valid From: 2024 Oct 10 1350 UTC Now Valid Until: 2024 Oct 12 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WATA50 Serial Number: 83 Issue Time: 2024 Oct 11 1714 UTC WATCH: Geomagnetic Storm Category G3 Predicted Highest Storm Level Predicted by Day: Oct 11: G3 (Strong) Oct 12: G1 (Minor) Oct 13: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT Comment: This supersedes the previous G4 (Severe) geomagnetic storm watch for 11 Oct as potential has diminished. A G3 (Strong) geomagnetic storm watch remains in place for 11 Oct, along with a G1 (Minor) watch for 12 Oct, as CME effects continue to wane. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 552 Issue Time: 2024 Oct 11 1650 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 551 Valid From: 2024 Oct 10 1506 UTC Now Valid Until: 2024 Oct 11 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1946 Issue Time: 2024 Oct 11 1649 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1945 Valid From: 2024 Oct 10 1506 UTC Now Valid Until: 2024 Oct 12 0600 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4722 Issue Time: 2024 Oct 11 1645 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4721 Valid From: 2024 Oct 10 1350 UTC Now Valid Until: 2024 Oct 12 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 177 Issue Time: 2024 Oct 11 1500 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 11 1459 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 610 Issue Time: 2024 Oct 11 1328 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 11 1322 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1672 Issue Time: 2024 Oct 11 1240 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 11 1234 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4721 Issue Time: 2024 Oct 11 1144 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4720 Valid From: 2024 Oct 10 1350 UTC Now Valid Until: 2024 Oct 11 2100 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 551 Issue Time: 2024 Oct 11 1144 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 550 Valid From: 2024 Oct 10 1506 UTC Now Valid Until: 2024 Oct 11 1800 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1945 Issue Time: 2024 Oct 11 1144 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1944 Valid From: 2024 Oct 10 1506 UTC Now Valid Until: 2024 Oct 11 1800 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK07 Serial Number: 120 Issue Time: 2024 Oct 11 1144 UTC EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected Extension to Serial Number: 119 Valid From: 2024 Oct 10 1541 UTC Now Valid Until: 2024 Oct 11 1800 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: SUMPX1 Serial Number: 117 Issue Time: 2024 Oct 11 1120 UTC SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2024 Oct 09 0505 UTC Maximum Time: 2024 Oct 10 1515 UTC End Time: 2024 Oct 11 0320 UTC Maximum 10MeV Flux: 1810 pfu NOAA Scale: S3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 580 Issue Time: 2024 Oct 11 1120 UTC CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected Cancel Serial Number: 579 Original Issue Time: 2024 Oct 09 0438 UTC Comment: Conditions have subsided. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 176 Issue Time: 2024 Oct 11 1012 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 11 1012 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 609 Issue Time: 2024 Oct 11 0939 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 11 0939 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1671 Issue Time: 2024 Oct 11 0926 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 11 0925 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 48 Issue Time: 2024 Oct 11 0848 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Oct 11 0848 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 175 Issue Time: 2024 Oct 11 0742 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 11 0742 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 608 Issue Time: 2024 Oct 11 0627 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 11 0619 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1670 Issue Time: 2024 Oct 11 0616 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 11 0611 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 843 Issue Time: 2024 Oct 11 0550 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Oct 11 0533 UTC Maximum Time: 2024 Oct 11 0533 UTC End Time: 2024 Oct 11 0533 UTC Duration: 1 minutes Peak Flux: 340 sfu Latest Penticton Noon Flux: 216 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: WARK07 Serial Number: 119 Issue Time: 2024 Oct 11 0516 UTC EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected Extension to Serial Number: 118 Valid From: 2024 Oct 10 1541 UTC Now Valid Until: 2024 Oct 11 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 47 Issue Time: 2024 Oct 11 0515 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Oct 11 0510 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 174 Issue Time: 2024 Oct 11 0439 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 11 0432 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 607 Issue Time: 2024 Oct 11 0420 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 11 0413 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1669 Issue Time: 2024 Oct 11 0333 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 11 0325 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 46 Issue Time: 2024 Oct 11 0211 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Oct 11 0207 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: SUMPX2 Serial Number: 53 Issue Time: 2024 Oct 11 0108 UTC SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu Begin Time: 2024 Oct 09 0740 UTC Maximum Time: 2024 Oct 10 1515 UTC End Time: 2024 Oct 10 2110 UTC Maximum 10MeV Flux: 1811 pfu NOAA Scale: S3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 173 Issue Time: 2024 Oct 11 0047 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 11 0042 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 606 Issue Time: 2024 Oct 11 0025 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 11 0019 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1668 Issue Time: 2024 Oct 11 0019 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 11 0014 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 45 Issue Time: 2024 Oct 10 2258 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Oct 10 2252 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 172 Issue Time: 2024 Oct 10 2152 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 10 2146 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 605 Issue Time: 2024 Oct 10 2129 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 10 2126 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 579 Issue Time: 2024 Oct 10 2125 UTC EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected Extension to Serial Number: 578 Valid From: 2024 Oct 09 0440 UTC Now Valid Until: 2024 Oct 11 2359 UTC Warning Condition: Persistence Predicted NOAA Scale: S2 - Moderate Comment: S1-S2 levels are expected NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1667 Issue Time: 2024 Oct 10 2113 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 10 2107 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 44 Issue Time: 2024 Oct 10 2037 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Oct 10 2032 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: SUMPX3 Serial Number: 20 Issue Time: 2024 Oct 10 1957 UTC SUMMARY: Proton Event 10MeV Integral Flux exceeded 1000pfu Begin Time: 2024 Oct 09 1240 UTC Maximum Time: 2024 Oct 10 1515 UTC End Time: 2024 Oct 10 1545 UTC Maximum 10MeV Flux: 1810 pfu NOAA Scale: S3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 171 Issue Time: 2024 Oct 10 1858 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 10 1853 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 604 Issue Time: 2024 Oct 10 1831 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 10 1826 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1666 Issue Time: 2024 Oct 10 1823 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 10 1819 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 43 Issue Time: 2024 Oct 10 1705 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Oct 10 1657 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 170 Issue Time: 2024 Oct 10 1552 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 10 1549 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: WARK07 Serial Number: 118 Issue Time: 2024 Oct 10 1542 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 Oct 10 1541 UTC Valid To: 2024 Oct 11 0600 UTC Warning Condition: Onset NOAA Scale: G3 or greater NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 603 Issue Time: 2024 Oct 10 1537 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 10 1537 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1665 Issue Time: 2024 Oct 10 1525 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 10 1521 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: SUMSUD Serial Number: 280 Issue Time: 2024 Oct 10 1525 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2024 Oct 10 1515 UTC Deviation: 36 nT Station: Boulder NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2488 Issue Time: 2024 Oct 10 1524 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 10 1520 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 550 Issue Time: 2024 Oct 10 1507 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Oct 10 1506 UTC Valid To: 2024 Oct 11 1200 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1944 Issue Time: 2024 Oct 10 1506 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Oct 10 1506 UTC Valid To: 2024 Oct 11 1200 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARSUD Serial Number: 236 Issue Time: 2024 Oct 10 1501 UTC WARNING: Geomagnetic Sudden Impulse expected Valid From: 2024 Oct 10 1501 UTC Valid To: 2024 Oct 10 1530 UTC IP Shock Passage Observed: 2024 Oct 10 1449 UTC Comment: Average wind speed is around 700 km/s, so expected arrival is somewhere between 15:15 and 15:45 UTC. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4720 Issue Time: 2024 Oct 10 1351 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Oct 10 1350 UTC Valid To: 2024 Oct 11 1200 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: SUMPC0 Serial Number: 36 Issue Time: 2024 Oct 10 0759 UTC SUMMARY: Proton Event 100MeV Integral Flux exceeded 1pfu Begin Time: 2024 Oct 09 0350 UTC Maximum Time: 2024 Oct 09 0805 UTC End Time: 2024 Oct 10 0440 UTC Maximum 100MeV Flux: 4 pfu Comment: This Summary marks the end of the 100 MeV proton event. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: WARPC0 Serial Number: 111 Issue Time: 2024 Oct 09 2356 UTC EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected Extension to Serial Number: 110 Valid From: 2024 Oct 09 0333 UTC Now Valid Until: 2024 Oct 10 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact. -------------------------------------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 578 Issue Time: 2024 Oct 09 2355 UTC EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected Extension to Serial Number: 577 Valid From: 2024 Oct 09 0440 UTC Now Valid Until: 2024 Oct 10 2359 UTC Warning Condition: Persistence Predicted NOAA Scale: S3 - Strong Comment: S2-S3 levels are expected NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: SUMXM5 Serial Number: 264 Issue Time: 2024 Oct 09 2337 UTC SUMMARY: X-ray Event exceeded M5 Begin Time: 2024 Oct 09 2259 UTC Maximum Time: 2024 Oct 09 2312 UTC End Time: 2024 Oct 09 2321 UTC X-ray Class: M7.7 Optical Class: na Location: S13W90 NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth. Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 442 Issue Time: 2024 Oct 09 2313 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 09 2309 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: ALTPX3 Serial Number: 32 Issue Time: 2024 Oct 09 1724 UTC ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu Begin Time: 2024 Oct 09 1705 UTC NOAA Scale: S3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels. Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely. Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 667 Issue Time: 2024 Oct 09 1618 UTC ALERT: Type IV Radio Emission Begin Time: 2024 Oct 09 1546 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. -------------------------------------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 177 Issue Time: 2024 Oct 09 1606 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Oct 09 1544 UTC Maximum Time: 2024 Oct 09 1547 UTC End Time: 2024 Oct 09 1553 UTC X-ray Class: X1.4 Location: S10W90 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 842 Issue Time: 2024 Oct 09 1603 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Oct 09 1544 UTC Maximum Time: 2024 Oct 09 1545 UTC End Time: 2024 Oct 09 1547 UTC Duration: 3 minutes Peak Flux: 2300 sfu Latest Penticton Noon Flux: 225 sfu Comment: Castelli U Burst Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 441 Issue Time: 2024 Oct 09 1548 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 09 1545 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4719 Issue Time: 2024 Oct 09 1349 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4718 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 09 2100 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2487 Issue Time: 2024 Oct 09 1347 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 09 1340 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTPX3 Serial Number: 31 Issue Time: 2024 Oct 09 1255 UTC ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu Begin Time: 2024 Oct 09 1240 UTC NOAA Scale: S3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels. Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely. Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation. -------------------------------------------------------------------------------- Space Weather Message Code: WATA99 Serial Number: 8 Issue Time: 2024 Oct 09 1233 UTC WATCH: Geomagnetic Storm Category G4 or Greater Predicted Highest Storm Level Predicted by Day: Oct 10: G4 (Severe) Oct 11: G4 (Severe) Oct 12: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: ALTPX2 Serial Number: 74 Issue Time: 2024 Oct 09 0801 UTC ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu Begin Time: 2024 Oct 09 0740 UTC NOAA Scale: S2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures. Spacecraft - Infrequent single-event upsets to satellites are possible. Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1664 Issue Time: 2024 Oct 09 0558 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 09 0554 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTPX1 Serial Number: 352 Issue Time: 2024 Oct 09 0522 UTC ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2024 Oct 09 0505 UTC NOAA Scale: S1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 577 Issue Time: 2024 Oct 09 0438 UTC WARNING: Proton 10MeV Integral Flux above 10pfu expected Valid From: 2024 Oct 09 0440 UTC Valid To: 2024 Oct 09 2359 UTC Warning Condition: Onset Predicted NOAA Scale: S1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 841 Issue Time: 2024 Oct 09 0431 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Oct 09 0136 UTC Maximum Time: 2024 Oct 09 0203 UTC End Time: 2024 Oct 09 0400 UTC Duration: 174 minutes Peak Flux: 2700 sfu Latest Penticton Noon Flux: 225 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: ALTPC0 Serial Number: 52 Issue Time: 2024 Oct 09 0408 UTC ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu Begin Time: 2024 Oct 09 0350 UTC NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact. -------------------------------------------------------------------------------- Space Weather Message Code: WARPC0 Serial Number: 110 Issue Time: 2024 Oct 09 0333 UTC WARNING: Proton 100MeV Integral Flux above 1pfu expected Valid From: 2024 Oct 09 0333 UTC Valid To: 2024 Oct 09 2359 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact. -------------------------------------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 176 Issue Time: 2024 Oct 09 0250 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Oct 09 0125 UTC Maximum Time: 2024 Oct 09 0156 UTC End Time: 2024 Oct 09 0243 UTC X-ray Class: X1.8 Optical Class: na Location: N12W11 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1943 Issue Time: 2024 Oct 09 0237 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1942 Valid From: 2024 Oct 08 2317 UTC Now Valid Until: 2024 Oct 09 1500 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4718 Issue Time: 2024 Oct 09 0236 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4717 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 09 1800 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 666 Issue Time: 2024 Oct 09 0200 UTC ALERT: Type IV Radio Emission Begin Time: 2024 Oct 09 0143 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1364 Issue Time: 2024 Oct 09 0200 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 09 0144 UTC Estimated Velocity: 5176 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 440 Issue Time: 2024 Oct 09 0146 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 09 0143 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4717 Issue Time: 2024 Oct 08 2354 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4716 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 09 0600 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1942 Issue Time: 2024 Oct 08 2317 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Oct 08 2317 UTC Valid To: 2024 Oct 09 0300 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WATA20 Serial Number: 1015 Issue Time: 2024 Oct 08 2023 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Oct 09: None (Below G1) Oct 10: None (Below G1) Oct 11: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2486 Issue Time: 2024 Oct 08 2005 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 08 1936 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2485 Issue Time: 2024 Oct 08 1732 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 08 1711 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2484 Issue Time: 2024 Oct 08 1303 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 08 1259 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 602 Issue Time: 2024 Oct 08 0845 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 08 0836 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1663 Issue Time: 2024 Oct 08 0834 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 08 0823 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 169 Issue Time: 2024 Oct 08 0517 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 08 0512 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 601 Issue Time: 2024 Oct 08 0506 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 08 0458 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1662 Issue Time: 2024 Oct 08 0419 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 08 0409 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4716 Issue Time: 2024 Oct 08 0247 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4715 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 08 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 549 Issue Time: 2024 Oct 08 0247 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 548 Valid From: 2024 Oct 07 1800 UTC Now Valid Until: 2024 Oct 08 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1941 Issue Time: 2024 Oct 08 0247 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1940 Valid From: 2024 Oct 06 2220 UTC Now Valid Until: 2024 Oct 08 2100 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 168 Issue Time: 2024 Oct 08 0242 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Oct 08 0235 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: WARK07 Serial Number: 117 Issue Time: 2024 Oct 08 0233 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 Oct 08 0232 UTC Valid To: 2024 Oct 08 0900 UTC Warning Condition: Onset NOAA Scale: G3 or greater NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1661 Issue Time: 2024 Oct 08 0051 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 08 0046 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1660 Issue Time: 2024 Oct 07 2209 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 07 2202 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2483 Issue Time: 2024 Oct 07 2124 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 07 2117 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 665 Issue Time: 2024 Oct 07 2112 UTC ALERT: Type IV Radio Emission Begin Time: 2024 Oct 07 2007 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1363 Issue Time: 2024 Oct 07 2026 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 07 2003 UTC Estimated Velocity: 941 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 175 Issue Time: 2024 Oct 07 1938 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Oct 07 1902 UTC Maximum Time: 2024 Oct 07 1913 UTC End Time: 2024 Oct 07 1931 UTC X-ray Class: X2.1 Optical Class: 2b Location: S17W59 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 840 Issue Time: 2024 Oct 07 1920 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Oct 07 1906 UTC Maximum Time: 2024 Oct 07 1907 UTC End Time: 2024 Oct 07 1910 UTC Duration: 4 minutes Peak Flux: 640 sfu Latest Penticton Noon Flux: 265 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 439 Issue Time: 2024 Oct 07 1909 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 07 1907 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 600 Issue Time: 2024 Oct 07 1849 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 07 1845 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4715 Issue Time: 2024 Oct 07 1849 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4714 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 08 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1940 Issue Time: 2024 Oct 07 1848 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1939 Valid From: 2024 Oct 06 2220 UTC Now Valid Until: 2024 Oct 08 0900 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 548 Issue Time: 2024 Oct 07 1847 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Oct 07 1800 UTC Valid To: 2024 Oct 08 0600 UTC Warning Condition: Persistence NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1659 Issue Time: 2024 Oct 07 1838 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 07 1833 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2482 Issue Time: 2024 Oct 07 1832 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 07 1828 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2481 Issue Time: 2024 Oct 07 1738 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 07 1731 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1939 Issue Time: 2024 Oct 07 1338 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1938 Valid From: 2024 Oct 06 2220 UTC Now Valid Until: 2024 Oct 07 2100 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4714 Issue Time: 2024 Oct 07 1338 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4713 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 08 0000 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 599 Issue Time: 2024 Oct 07 1334 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Oct 07 1328 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 547 Issue Time: 2024 Oct 07 1333 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Oct 07 1332 UTC Valid To: 2024 Oct 07 1800 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1658 Issue Time: 2024 Oct 07 1301 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 07 1256 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2480 Issue Time: 2024 Oct 07 1252 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 07 1225 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1657 Issue Time: 2024 Oct 07 1142 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 07 1141 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1938 Issue Time: 2024 Oct 07 1109 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1937 Valid From: 2024 Oct 06 2220 UTC Now Valid Until: 2024 Oct 07 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1656 Issue Time: 2024 Oct 07 0604 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 07 0559 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 546 Issue Time: 2024 Oct 07 0102 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Oct 07 0100 UTC Valid To: 2024 Oct 07 0900 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1937 Issue Time: 2024 Oct 07 0102 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1936 Valid From: 2024 Oct 06 2220 UTC Now Valid Until: 2024 Oct 07 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4713 Issue Time: 2024 Oct 07 0102 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4712 Valid From: 2024 Oct 06 1506 UTC Now Valid Until: 2024 Oct 07 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1655 Issue Time: 2024 Oct 07 0052 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 07 0041 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1654 Issue Time: 2024 Oct 06 2245 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 06 2240 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G1 - Minor Comment: RE-issued with correct Threshold Reached time of 06/2240 UTC. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1653 Issue Time: 2024 Oct 06 2244 UTC CANCEL ALERT: Geomagnetic K-index of 5 Cancel Serial Number: 1652 Original Issue Time: 2024 Oct 06 2241 UTC Comment: Issued with incorrect "Threshold Reached" time. Will re-issue with correct time. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1652 Issue Time: 2024 Oct 06 2241 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Oct 06 2220 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1936 Issue Time: 2024 Oct 06 2218 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Oct 06 2220 UTC Valid To: 2024 Oct 07 0600 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2479 Issue Time: 2024 Oct 06 2104 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Oct 06 2059 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4712 Issue Time: 2024 Oct 06 1507 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Oct 06 1506 UTC Valid To: 2024 Oct 07 0900 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4711 Issue Time: 2024 Oct 04 2259 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Oct 04 2300 UTC Valid To: 2024 Oct 05 1500 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WATA50 Serial Number: 82 Issue Time: 2024 Oct 04 1857 UTC WATCH: Geomagnetic Storm Category G3 Predicted Highest Storm Level Predicted by Day: Oct 05: G3 (Strong) Oct 06: G3 (Strong) Oct 07: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT Comment: G1 (Minor) geomagnetic storm watch added to new day three (07 Oct). NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: SUMXM5 Serial Number: 263 Issue Time: 2024 Oct 03 2043 UTC SUMMARY: X-ray Event exceeded M5 Begin Time: 2024 Oct 03 2009 UTC Maximum Time: 2024 Oct 03 2028 UTC End Time: 2024 Oct 03 2040 UTC X-ray Class: M6.7 Location: S09W49 NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth. Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1362 Issue Time: 2024 Oct 03 2036 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 03 2012 UTC Estimated Velocity: 1241 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 438 Issue Time: 2024 Oct 03 2024 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 03 2022 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: WATA50 Serial Number: 81 Issue Time: 2024 Oct 03 2013 UTC WATCH: Geomagnetic Storm Category G3 Predicted Highest Storm Level Predicted by Day: Oct 04: G3 (Strong) Oct 05: G3 (Strong) Oct 06: G3 (Strong) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 839 Issue Time: 2024 Oct 03 1343 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Oct 03 1214 UTC Maximum Time: 2024 Oct 03 1215 UTC End Time: 2024 Oct 03 1224 UTC Duration: 10 minutes Peak Flux: 3500 sfu Latest Penticton Noon Flux: 275 sfu Comment: Castelli-U Burst Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 174 Issue Time: 2024 Oct 03 1236 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Oct 03 1208 UTC Maximum Time: 2024 Oct 03 1218 UTC End Time: 2024 Oct 03 1227 UTC X-ray Class: X9.0 Location: S14W03 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 664 Issue Time: 2024 Oct 03 1233 UTC ALERT: Type IV Radio Emission Begin Time: 2024 Oct 03 1217 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1361 Issue Time: 2024 Oct 03 1232 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 03 1218 UTC Estimated Velocity: 573 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1360 Issue Time: 2024 Oct 03 1232 UTC CANCEL ALERT: Type II Radio Emission Cancel Serial Number: 1359 Original Issue Time: 2024 Oct 03 1229 UTC Comment: Wrong sstart time entered Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1359 Issue Time: 2024 Oct 03 1229 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 03 1218 UTC Estimated Velocity: 573 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1359 Issue Time: 2024 Oct 03 1229 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 03 1018 UTC Estimated Velocity: 573 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 437 Issue Time: 2024 Oct 03 1218 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 03 1215 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: WATA50 Serial Number: 80 Issue Time: 2024 Oct 02 1701 UTC WATCH: Geomagnetic Storm Category G3 Predicted Highest Storm Level Predicted by Day: Oct 03: G1 (Minor) Oct 04: G3 (Strong) Oct 05: G2 (Moderate) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1358 Issue Time: 2024 Oct 02 0905 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 02 0544 UTC Estimated Velocity: 1144 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 173 Issue Time: 2024 Oct 01 2238 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Oct 01 2158 UTC Maximum Time: 2024 Oct 01 2220 UTC End Time: 2024 Oct 01 2229 UTC X-ray Class: X7.1 Optical Class: 2b Location: S15E19 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 838 Issue Time: 2024 Oct 01 2233 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Oct 01 2209 UTC Maximum Time: 2024 Oct 01 2214 UTC End Time: 2024 Oct 01 2218 UTC Duration: 9 minutes Peak Flux: 810 sfu Latest Penticton Noon Flux: 245 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 1357 Issue Time: 2024 Oct 01 2226 UTC ALERT: Type II Radio Emission Begin Time: 2024 Oct 01 2217 UTC Estimated Velocity: 1246 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 436 Issue Time: 2024 Oct 01 2214 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Oct 01 2211 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: SUMXM5 Serial Number: 262 Issue Time: 2024 Oct 01 0026 UTC SUMMARY: X-ray Event exceeded M5 Begin Time: 2024 Sep 30 2337 UTC Maximum Time: 2024 Sep 30 2359 UTC End Time: 2024 Oct 01 0023 UTC X-ray Class: M7.6 Optical Class: 2n Location: S15E31 NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth. Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 435 Issue Time: 2024 Sep 30 2355 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Sep 30 2353 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2478 Issue Time: 2024 Sep 30 0117 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Sep 30 0115 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4710 Issue Time: 2024 Sep 29 2349 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4709 Valid From: 2024 Sep 29 0424 UTC Now Valid Until: 2024 Sep 30 0900 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4709 Issue Time: 2024 Sep 29 0425 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Sep 29 0424 UTC Valid To: 2024 Sep 29 2359 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4708 Issue Time: 2024 Sep 26 0532 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4707 Valid From: 2024 Sep 24 2245 UTC Now Valid Until: 2024 Sep 26 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WATA20 Serial Number: 1014 Issue Time: 2024 Sep 25 2052 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Sep 26: G1 (Minor) Sep 27: None (Below G1) Sep 28: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1651 Issue Time: 2024 Sep 25 1619 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 25 1619 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1935 Issue Time: 2024 Sep 25 1457 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1934 Valid From: 2024 Sep 24 2345 UTC Now Valid Until: 2024 Sep 25 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4707 Issue Time: 2024 Sep 25 1457 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4706 Valid From: 2024 Sep 24 2245 UTC Now Valid Until: 2024 Sep 26 0600 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1934 Issue Time: 2024 Sep 25 0838 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1933 Valid From: 2024 Sep 24 2345 UTC Now Valid Until: 2024 Sep 25 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1650 Issue Time: 2024 Sep 25 0549 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 25 0545 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1649 Issue Time: 2024 Sep 25 0000 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 24 2359 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1933 Issue Time: 2024 Sep 24 2346 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Sep 24 2345 UTC Valid To: 2024 Sep 25 0900 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2477 Issue Time: 2024 Sep 24 2342 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Sep 24 2333 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4706 Issue Time: 2024 Sep 24 2244 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Sep 24 2245 UTC Valid To: 2024 Sep 25 1800 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4705 Issue Time: 2024 Sep 23 2053 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4704 Valid From: 2024 Sep 23 1400 UTC Now Valid Until: 2024 Sep 24 0900 UTC Warning Condition: persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WATA20 Serial Number: 1013 Issue Time: 2024 Sep 23 2051 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Sep 24: None (Below G1) Sep 25: G1 (Minor) Sep 26: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2476 Issue Time: 2024 Sep 23 1434 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Sep 23 1434 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3406 Issue Time: 2024 Sep 23 1413 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3405 Begin Time: 2024 Sep 19 1740 UTC Yesterday Maximum 2MeV Flux: 2345 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4704 Issue Time: 2024 Sep 23 1400 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Sep 23 1400 UTC Valid To: 2024 Sep 23 2100 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 837 Issue Time: 2024 Sep 22 2153 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Sep 22 2123 UTC Maximum Time: 2024 Sep 22 2127 UTC End Time: 2024 Sep 22 2132 UTC Duration: 9 minutes Peak Flux: 540 sfu Latest Penticton Noon Flux: 163 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3405 Issue Time: 2024 Sep 22 1002 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3404 Begin Time: 2024 Sep 19 1740 UTC Yesterday Maximum 2MeV Flux: 1718 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3404 Issue Time: 2024 Sep 21 1446 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3403 Begin Time: 2024 Sep 19 1740 UTC Yesterday Maximum 2MeV Flux: 1241 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3403 Issue Time: 2024 Sep 20 1428 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3402 Begin Time: 2024 Sep 19 1740 UTC Yesterday Maximum 2MeV Flux: 1228 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3402 Issue Time: 2024 Sep 19 1812 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2024 Sep 19 1740 UTC Station: GOES-16 Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4703 Issue Time: 2024 Sep 19 1332 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4702 Valid From: 2024 Sep 19 1026 UTC Now Valid Until: 2024 Sep 19 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2475 Issue Time: 2024 Sep 19 1328 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Sep 19 1320 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4702 Issue Time: 2024 Sep 19 1026 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Sep 19 1026 UTC Valid To: 2024 Sep 19 1500 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1648 Issue Time: 2024 Sep 19 0246 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 19 0246 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1932 Issue Time: 2024 Sep 19 0146 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Sep 19 0150 UTC Valid To: 2024 Sep 19 0900 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 2474 Issue Time: 2024 Sep 19 0001 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Sep 18 2359 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4701 Issue Time: 2024 Sep 18 2311 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Sep 18 2315 UTC Valid To: 2024 Sep 19 0900 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: SUMPX1 Serial Number: 116 Issue Time: 2024 Sep 18 0021 UTC SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2024 Sep 17 0735 UTC Maximum Time: 2024 Sep 17 1050 UTC End Time: 2024 Sep 17 1615 UTC Maximum 10MeV Flux: 33 pfu NOAA Scale: S1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4700 Issue Time: 2024 Sep 17 1756 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4699 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 18 0600 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1931 Issue Time: 2024 Sep 17 1756 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1930 Valid From: 2024 Sep 16 2335 UTC Now Valid Until: 2024 Sep 18 0300 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 598 Issue Time: 2024 Sep 17 1504 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Sep 17 1459 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1647 Issue Time: 2024 Sep 17 1349 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 17 1348 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4699 Issue Time: 2024 Sep 17 1028 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4698 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 17 2100 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1930 Issue Time: 2024 Sep 17 1028 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1929 Valid From: 2024 Sep 16 2335 UTC Now Valid Until: 2024 Sep 17 1800 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 545 Issue Time: 2024 Sep 17 1028 UTC EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 544 Valid From: 2024 Sep 17 0105 UTC Now Valid Until: 2024 Sep 17 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 597 Issue Time: 2024 Sep 17 1027 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Sep 17 1019 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1646 Issue Time: 2024 Sep 17 1012 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 17 1003 UTC Synoptic Period: 0900-1200 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1645 Issue Time: 2024 Sep 17 0821 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 17 0816 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTPX1 Serial Number: 351 Issue Time: 2024 Sep 17 0752 UTC ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2024 Sep 17 0735 UTC NOAA Scale: S1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 576 Issue Time: 2024 Sep 17 0521 UTC WARNING: Proton 10MeV Integral Flux above 10pfu expected Valid From: 2024 Sep 17 0521 UTC Valid To: 2024 Sep 17 2359 UTC Warning Condition: Onset Predicted NOAA Scale: S1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 167 Issue Time: 2024 Sep 17 0435 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Sep 17 0426 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 596 Issue Time: 2024 Sep 17 0353 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Sep 17 0346 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1644 Issue Time: 2024 Sep 17 0331 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 17 0331 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK08 Serial Number: 42 Issue Time: 2024 Sep 17 0300 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Sep 17 0257 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G4 - Severe NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify. Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur. Navigation - Satellite navigation (GPS) degraded or inoperable for hours. Radio - HF (high frequency) radio propagation sporadic or blacked out. Aurora - Aurora may be seen as low as Alabama and northern California. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK07 Serial Number: 166 Issue Time: 2024 Sep 17 0128 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Sep 17 0127 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: WARK07 Serial Number: 116 Issue Time: 2024 Sep 17 0118 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 Sep 17 0120 UTC Valid To: 2024 Sep 17 1200 UTC Warning Condition: Onset NOAA Scale: G3 or greater NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK06 Serial Number: 595 Issue Time: 2024 Sep 17 0114 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2024 Sep 17 0113 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 1643 Issue Time: 2024 Sep 17 0105 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Sep 17 0103 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARK06 Serial Number: 544 Issue Time: 2024 Sep 17 0105 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Sep 17 0105 UTC Valid To: 2024 Sep 17 1200 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. -------------------------------------------------------------------------------- Space Weather Message Code: SUMSUD Serial Number: 279 Issue Time: 2024 Sep 16 2341 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2024 Sep 16 2329 UTC Deviation: 39 nT Station: BOU NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4698 Issue Time: 2024 Sep 16 2332 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4697 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 17 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1929 Issue Time: 2024 Sep 16 2332 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Sep 16 2335 UTC Valid To: 2024 Sep 17 1200 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: WARSUD Serial Number: 235 Issue Time: 2024 Sep 16 2302 UTC WARNING: Geomagnetic Sudden Impulse expected Valid From: 2024 Sep 16 2310 UTC Valid To: 2024 Sep 17 0010 UTC IP Shock Passage Observed: 2024 Sep 16 2249 UTC NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4697 Issue Time: 2024 Sep 16 1455 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4696 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 17 0300 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 1927 Issue Time: 2024 Sep 16 1028 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Sep 16 1028 UTC Valid To: 2024 Sep 16 1500 UTC Warning Condition: Onset NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3401 Issue Time: 2024 Sep 16 1016 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3400 Begin Time: 2024 Sep 15 1215 UTC Yesterday Maximum 2MeV Flux: 1693 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4696 Issue Time: 2024 Sep 16 0845 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4695 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 16 1500 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4695 Issue Time: 2024 Sep 16 0246 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4694 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 16 0900 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4694 Issue Time: 2024 Sep 15 1755 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4693 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 16 0300 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: ALTEF3 Serial Number: 3400 Issue Time: 2024 Sep 15 1230 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2024 Sep 15 1215 UTC Station: GOES16 Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4693 Issue Time: 2024 Sep 15 1127 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4692 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 15 1800 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 4692 Issue Time: 2024 Sep 14 2258 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4691 Valid From: 2024 Sep 12 0355 UTC Now Valid Until: 2024 Sep 15 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. -------------------------------------------------------------------------------- Space Weather Message Code: WATA50 Serial Number: 79 Issue Time: 2024 Sep 14 2104 UTC WATCH: Geomagnetic Storm Category G3 Predicted Highest Storm Level Predicted by Day: Sep 15: None (Below G1) Sep 16: G3 (Strong) Sep 17: G2 (Moderate) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. -------------------------------------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 836 Issue Time: 2024 Sep 14 1630 UTC SUMMARY: 10cm Radio Burst Begin Time: 2024 Sep 14 1517 UTC Maximum Time: 2024 Sep 14 1532 UTC End Time: 2024 Sep 14 1555 UTC Duration: 38 minutes Peak Flux: 1000 sfu Latest Penticton Noon Flux: 186 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. -------------------------------------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 172 Issue Time: 2024 Sep 14 1553 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2024 Sep 14 1513 UTC Maximum Time: 2024 Sep 14 1529 UTC End Time: 2024 Sep 14 1547 UTC X-ray Class: X4.5 Optical Class: 2b Location: S18E62 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. -------------------------------------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 434 Issue Time: 2024 Sep 14 1521 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Sep 14 1518 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. --------------------------------------------------------------------------------
R.M.P Marotta Long Island
Marotta Long Island
R.M.P Marotta Long Island 
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