019 
WOXX22 KWNP 111716
WATA50

Space Weather Message Code: WATA50
Serial Number: 83
Issue Time: 2024 Oct 11 1714 UTC

WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Oct 11:  G3 (Strong)   Oct 12:  G1 (Minor)   Oct 13:  None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: This supersedes the previous G4 (Severe) geomagnetic storm watch for 11 Oct as potential has diminished. A G3 (Strong) geomagnetic storm watch remains in place for 11 Oct, along with a G1 (Minor) watch for 12 Oct,  as CME effects continue to wane.
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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