Local 11/16/2025, 10:17:12 PM
UTC 2025-11-16T22:17:12.060Z
Space Weather Message Code: WARK04Serial Number: 5152Issue Time: 2025 Nov 16 2217 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5151Valid From: 2025 Nov 15 2000 UTCNow Valid Until: 2025 Nov 17 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 11/16/2025, 3:03:24 AM
UTC 2025-11-16T03:03:24.967Z
Space Weather Message Code: ALTK04Serial Number: 2608Issue Time: 2025 Nov 16 0303 UTCALERT: Geomagnetic K-index of 4Threshold Reached: 2025 Nov 16 0259 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 11/16/2025, 2:19:54 AM
UTC 2025-11-16T02:19:54.480Z
Space Weather Message Code: WARK04Serial Number: 5151Issue Time: 2025 Nov 16 0219 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 5150Valid From: 2025 Nov 15 2000 UTCNow Valid Until: 2025 Nov 16 2359 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 11/15/2025, 8:02:59 PM
UTC 2025-11-15T20:02:59.857Z
Space Weather Message Code: WARK04Serial Number: 5150Issue Time: 2025 Nov 15 2002 UTCWARNING: Geomagnetic K-index of 4 expectedValid From: 2025 Nov 15 2000 UTCValid To: 2025 Nov 16 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.