Local 11/23/2025, 6:01:35 PM
UTC 2025-11-23T18:01:35.987Z
Space Weather Message Code: ALTK04Serial Number: 2609Issue Time: 2025 Nov 23 1801 UTCALERT: Geomagnetic K-index of 4Threshold Reached: 2025 Nov 23 1759 UTCSynoptic Period: 1500-1800 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 11/23/2025, 5:08:55 PM
UTC 2025-11-23T17:08:55.297Z
Space Weather Message Code: WARK04Serial Number: 5156Issue Time: 2025 Nov 23 1708 UTCWARNING: Geomagnetic K-index of 4 expectedValid From: 2025 Nov 23 1708 UTCValid To: 2025 Nov 23 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 11/23/2025, 4:50:55 PM
UTC 2025-11-23T16:50:55.177Z
Space Weather Message Code: WATA20Serial Number: 1077Issue Time: 2025 Nov 23 1650 UTCWATCH: Geomagnetic Storm Category G1 PredictedHighest Storm Level Predicted by Day:Nov 24: None (Below G1) Nov 25: G1 (Minor) Nov 26: G1 (Minor)THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECTNOAA 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.