


Space Environment Watch
Issued by NWS
Issued by NWS
986 WOXX20 KWNP 241951 WATA20 Space Weather Message Code: WATA20 Serial Number: 1054 Issue Time: 2025 Jul 24 1947 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jul 25: None (Below G1) Jul 26: None (Below G1) Jul 27: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT Comment: G1 (Minor) geomagnetic storming is likely on 27 July due to CME effects from an event that left the Sun on 23 July. www.swpc.noaa.gov/noaa-scales-explanation Potential 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. # Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Recent messages, data, and help at http://swpc.noaa.gov/alerts/ # Send questions to SWPC.Webmaster@noaa.gov