Local 3/31/2026, 10:13:34 PM
UTC 2026-03-31T22:13:34.773Z
Space Weather Message Code: WATA30Serial Number: 269Issue Time: 2026 Mar 31 2213 UTCWATCH: Geomagnetic Storm Category G2 PredictedHighest Storm Level Predicted by Day:Apr 01: G2 (Moderate) Apr 02: G1 (Minor) Apr 03: None (Below G1)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 55 degrees Geomagnetic Latitude.Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.Radio - HF (high frequency) radio propagation can fade at higher latitudes.Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Local 3/31/2026, 2:54:21 PM
UTC 2026-03-31T14:54:21.610Z
Space Weather Message Code: ALTEF3Serial Number: 3662Issue Time: 2026 Mar 31 1454 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3661Begin Time: 2026 Mar 22 1430 UTCYesterday Maximum 2MeV Flux: 1358 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 3/31/2026, 12:31:18 PM
UTC 2026-03-31T12:31:18.377Z
Space Weather Message Code: WATA20Serial Number: 1106Issue Time: 2026 Mar 31 1231 UTCWATCH: Geomagnetic Storm Category G1 PredictedHighest Storm Level Predicted by Day:Mar 31: G2 (Moderate) Apr 01: G1 (Minor) Apr 02: 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.
Local 3/31/2026, 12:28:56 PM
UTC 2026-03-31T12:28:56.460Z
Space Weather Message Code: WATA20Serial Number: 1105Issue Time: 2026 Mar 31 1228 UTCCANCEL WATCH: Geomagnetic Storm Category G1 PredictedCancel Serial Number: 1104Original Issue Time: 2026 Mar 31 1227 UTCComment: cancelled due to incorrect date.NOAA 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 3/31/2026, 12:27:33 PM
UTC 2026-03-31T12:27:33.493Z
Space Weather Message Code: WATA20Serial Number: 1104Issue Time: 2026 Mar 31 1227 UTCWATCH: Geomagnetic Storm Category G1 PredictedHighest Storm Level Predicted by Day:Apr 01: G2 (Moderate) Apr 02: G1 (Minor) Apr 03: None (Below G1)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.