Local 8/4/2026, 8:10:52 AM
UTC 2026-08-04T08:10:52.687Z
Space Weather Message Code: WARK04Serial Number: 5398Issue Time: 2026 Aug 04 0810 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5397 Valid From: 2026 Aug 02 1237 UTC Now Valid Until: 2026 Aug 04 1500 UTC Warning 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 8/3/2026, 11:55:50 PM
UTC 2026-08-03T23:55:50.370Z
Space Weather Message Code: WARK04Serial Number: 5397Issue Time: 2026 Aug 03 2355 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5396 Valid From: 2026 Aug 02 1237 UTC Now Valid Until: 2026 Aug 04 0900 UTC Warning 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.