Local 4/12/2026, 9:45:25 AM
UTC 2026-04-12T09:45:25.183Z
Space Weather Message Code: WARK04Serial Number: 5317Issue Time: 2026 Apr 12 0945 UTCCANCEL WARNING: Geomagnetic K-index of 4 expectedCancel Serial Number: 5316Original Issue Time: 2026 Apr 10 0143 UTCComment: Active conditions (Kp=4) are no longer expected to occur.NOAA 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 4/11/2026, 5:56:04 PM
UTC 2026-04-11T17:56:04.477Z
Space Weather Message Code: WARK04Serial Number: 5316Issue Time: 2026 Apr 11 1756 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5315Valid From: 2026 Apr 10 0145 UTCNow Valid Until: 2026 Apr 12 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 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 4/11/2026, 1:06:43 PM
UTC 2026-04-11T13:06:43.880Z
Space Weather Message Code: ALTEF3Serial Number: 3672Issue Time: 2026 Apr 11 1306 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3671Begin Time: 2026 Apr 03 0920 UTCYesterday Maximum 2MeV Flux: 1714 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
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.