Local 3/24/2026, 5:00:10 AM
UTC 2026-03-24T05:00:10.860Z
Space Weather Message Code: ALTEF3Serial Number: 3655Issue Time: 2026 Mar 24 0500 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3654Begin Time: 2026 Mar 22 1430 UTCYesterday Maximum 2MeV Flux: 8285 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 3/24/2026, 4:20:30 AM
UTC 2026-03-24T04:20:30.377Z
Space Weather Message Code: WARK04Serial Number: 5297Issue Time: 2026 Mar 24 0420 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5296Valid From: 2026 Mar 23 1410 UTCNow Valid Until: 2026 Mar 24 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 3/24/2026, 4:20:30 AM
UTC 2026-03-24T04:20:30.370Z
Space Weather Message Code: WARK05Serial Number: 2216Issue Time: 2026 Mar 24 0420 UTCEXTENDED WARNING: Geomagnetic K-index of 5 expectedExtension to Serial Number: 2215Valid From: 2026 Mar 23 1440 UTCNow Valid Until: 2026 Mar 24 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 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 3/23/2026, 8:58:30 PM
UTC 2026-03-23T20:58:30.083Z
Space Weather Message Code: WARK05Serial Number: 2215Issue Time: 2026 Mar 23 2058 UTCEXTENDED WARNING: Geomagnetic K-index of 5 expectedExtension to Serial Number: 2214Valid From: 2026 Mar 23 1440 UTCNow Valid Until: 2026 Mar 24 0600 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 3/23/2026, 8:58:30 PM
UTC 2026-03-23T20:58:30.073Z
Space Weather Message Code: WARK04Serial Number: 5296Issue Time: 2026 Mar 23 2058 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5295Valid From: 2026 Mar 23 1410 UTCNow Valid Until: 2026 Mar 24 1200 UTCWarning Condition: OnsetNOAA 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 3/23/2026, 5:52:12 PM
UTC 2026-03-23T17:52:12.777Z
Space Weather Message Code: ALTK05Serial Number: 1994Issue Time: 2026 Mar 23 1752 UTCALERT: Geomagnetic K-index of 5Threshold Reached: 2026 Mar 23 1750 UTCSynoptic Period: 1500-1800 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 3/23/2026, 3:00:56 PM
UTC 2026-03-23T15:00:56.463Z
Space Weather Message Code: ALTK05Serial Number: 1993Issue Time: 2026 Mar 23 1500 UTCALERT: Geomagnetic K-index of 5Threshold Reached: 2026 Mar 23 1459 UTCSynoptic Period: 1200-1500 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 3/23/2026, 2:41:41 PM
UTC 2026-03-23T14:41:41.290Z
Space Weather Message Code: WARK05Serial Number: 2214Issue Time: 2026 Mar 23 1441 UTCWARNING: Geomagnetic K-index of 5 expectedValid From: 2026 Mar 23 1440 UTCValid To: 2026 Mar 23 2359 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.
Local 3/23/2026, 2:13:52 PM
UTC 2026-03-23T14:13:52.720Z
Space Weather Message Code: WARK04Serial Number: 5295Issue Time: 2026 Mar 23 1413 UTCWARNING: Geomagnetic K-index of 4 expectedValid From: 2026 Mar 23 1410 UTCValid To: 2026 Mar 24 0300 UTCWarning Condition: OnsetNOAA 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 3/23/2026, 12:01:41 PM
UTC 2026-03-23T12:01:41.367Z
Space Weather Message Code: ALTEF3Serial Number: 3654Issue Time: 2026 Mar 23 1201 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3653Begin Time: 2026 Mar 22 1430 UTCYesterday Maximum 2MeV Flux: 1321 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.