Space Environment Watch
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WOXX21 KWNP 101356
WATA30

Space Weather Message Code: WATA30
Serial Number: 116
Issue Time: 2014 Sep 10 1350 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Sep 11:  None (Below G1)   Sep 12:  G2 (Moderate)   Sep 13:  G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: G2 (Moderate)  Geomagnetic Storm conditions remain expected on 12 Sep with the addition of G1 (Minor) Geomagnetic Storm conditions now expected on 13 Sep.
Potential 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.

# 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



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