226
WOXX20 KWNP 041921
WATA20

Space Weather Message Code: WATA20
Serial Number: 1059
Issue Time: 2025 Sep 04 1917 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Sep 05:  G1 (Minor)   Sep 06:  G1 (Minor)   Sep 07:  None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: G1 (Minor) geomagnetic storming due to recurrent positive polarity coronal hole high speed stream effects is ikely by late on the 05 Sep UTC day and continuing into 06 Sep.
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.

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