Local 4/10/2026, 2:26:04 PM
UTC 2026-04-10T14:26:04.470Z
Space Weather Message Code: WARK05Serial Number: 2223Issue Time: 2026 Apr 10 1426 UTCWARNING: Geomagnetic K-index of 5 expectedValid From: 2026 Apr 10 1425 UTCValid To: 2026 Apr 11 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.
Local 4/10/2026, 2:07:21 PM
UTC 2026-04-10T14:07:21.717Z
Space Weather Message Code: ALTEF3Serial Number: 3671Issue Time: 2026 Apr 10 1407 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3670Begin Time: 2026 Apr 03 0920 UTCYesterday Maximum 2MeV Flux: 10680 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 4/10/2026, 1:50:17 PM
UTC 2026-04-10T13:50:17.650Z
Space Weather Message Code: WARK04Serial Number: 5315Issue Time: 2026 Apr 10 1350 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5314Valid From: 2026 Apr 10 0145 UTCNow Valid Until: 2026 Apr 11 1800 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 4/10/2026, 2:08:32 AM
UTC 2026-04-10T02:08:32.690Z
Space Weather Message Code: ALTK04Serial Number: 2649Issue Time: 2026 Apr 10 0208 UTCALERT: Geomagnetic K-index of 4Threshold Reached: 2026 Apr 10 0205 UTCSynoptic Period: 0000-0300 UTCActive Warning: YesNOAA 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 4/10/2026, 1:43:15 AM
UTC 2026-04-10T01:43:15.303Z
Space Weather Message Code: WARK04Serial Number: 5314Issue Time: 2026 Apr 10 0143 UTCWARNING: Geomagnetic K-index of 4 expectedValid From: 2026 Apr 10 0145 UTCValid To: 2026 Apr 10 1500 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.