Local 11/26/2025, 11:22:14 PM
UTC 2025-11-26T23:22:14.770Z
Space Weather Message Code: WARK04Serial Number: 5162Issue Time: 2025 Nov 26 2322 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5161Valid From: 2025 Nov 24 0226 UTCNow Valid Until: 2025 Nov 27 1200 UTCWarning Condition: PersistenceNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/26/2025, 10:45:57 AM
UTC 2025-11-26T10:45:57.050Z
Space Weather Message Code: WARK04Serial Number: 5161Issue Time: 2025 Nov 26 1045 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5160Valid From: 2025 Nov 24 0226 UTCNow Valid Until: 2025 Nov 26 2359 UTCWarning Condition: PersistenceNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/26/2025, 5:01:11 AM
UTC 2025-11-26T05:01:11.177Z
Space Weather Message Code: ALTEF3Serial Number: 3563Issue Time: 2025 Nov 26 0501 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3562Begin Time: 2025 Nov 25 1450 UTCYesterday Maximum 2MeV Flux: 3722 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 11/26/2025, 12:39:22 AM
UTC 2025-11-26T00:39:22.000Z
Space Weather Message Code: WATA20Serial Number: 1078Issue Time: 2025 Nov 26 0039 UTCWATCH: Geomagnetic Storm Category G1 PredictedHighest Storm Level Predicted by Day:Nov 26: G1 (Minor) Nov 27: G1 (Minor) Nov 28: None (Below G1)THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECTNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 11:54:45 PM
UTC 2025-11-25T23:54:45.603Z
Space Weather Message Code: WARK04Serial Number: 5160Issue Time: 2025 Nov 25 2354 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5159Valid From: 2025 Nov 24 0226 UTCNow Valid Until: 2025 Nov 26 1200 UTCWarning Condition: PersistenceNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 8:53:03 PM
UTC 2025-11-25T20:53:03.383Z
Space Weather Message Code: ALTTP2Serial Number: 1446Issue Time: 2025 Nov 25 2053 UTCALERT: Type II Radio EmissionBegin Time: 2025 Nov 25 1950 UTCEstimated Velocity: 1050 km/sDescription: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Local 11/25/2025, 2:55:11 PM
UTC 2025-11-25T14:55:11.570Z
Space Weather Message Code: WARK05Serial Number: 2142Issue Time: 2025 Nov 25 1455 UTCEXTENDED WARNING: Geomagnetic K-index of 5 expectedExtension to Serial Number: 2141Valid From: 2025 Nov 25 0211 UTCNow Valid Until: 2025 Nov 25 2100 UTCWarning Condition: PersistenceNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 2:51:30 PM
UTC 2025-11-25T14:51:30.060Z
Space Weather Message Code: ALTEF3Serial Number: 3562Issue Time: 2025 Nov 25 1451 UTCALERT: Electron 2MeV Integral Flux exceeded 1000pfuThreshold Reached: 2025 Nov 25 1450 UTCStation: GOES19Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 11/25/2025, 8:47:05 AM
UTC 2025-11-25T08:47:05.697Z
Space Weather Message Code: ALTK05Serial Number: 1917Issue Time: 2025 Nov 25 0847 UTCALERT: Geomagnetic K-index of 5Threshold Reached: 2025 Nov 25 0845 UTCSynoptic Period: 0600-0900 UTCActive Warning: YesNOAA Scale: G1 - MinorNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 8:24:49 AM
UTC 2025-11-25T08:24:49.393Z
Space Weather Message Code: WARK05Serial Number: 2141Issue Time: 2025 Nov 25 0824 UTCEXTENDED WARNING: Geomagnetic K-index of 5 expectedExtension to Serial Number: 2140Valid From: 2025 Nov 25 0211 UTCNow Valid Until: 2025 Nov 25 1500 UTCWarning Condition: PersistenceNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 8:23:10 AM
UTC 2025-11-25T08:23:10.277Z
Space Weather Message Code: WARK04Serial Number: 5159Issue Time: 2025 Nov 25 0823 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5158Valid From: 2025 Nov 24 0226 UTCNow Valid Until: 2025 Nov 25 2359 UTCWarning Condition: PersistenceNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 2:24:32 AM
UTC 2025-11-25T02:24:32.643Z
Space Weather Message Code: ALTK05Serial Number: 1916Issue Time: 2025 Nov 25 0224 UTCALERT: Geomagnetic K-index of 5Threshold Reached: 2025 Nov 25 0216 UTCSynoptic Period: 0000-0300 UTCActive Warning: YesNOAA Scale: G1 - MinorNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
Local 11/25/2025, 2:11:34 AM
UTC 2025-11-25T02:11:34.330Z
Space Weather Message Code: WARK05Serial Number: 2140Issue Time: 2025 Nov 25 0211 UTCWARNING: Geomagnetic K-index of 5 expectedValid From: 2025 Nov 25 0211 UTCValid To: 2025 Nov 25 0900 UTCWarning Condition: OnsetNOAA Scale: G1 - MinorNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.