Space Environment Watch
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WOXX21 KWNP 201201
WATA30

Space Weather Message Code: WATA30
Serial Number: 107
Issue Time: 2013 May 20 1155 UTC

CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 106
Original Issue Time: 2013 May 19 1855 UTC

Comment: Canceling watch for G2 Geomagnetic Storming on 20 May as data suggests CME has already passed.
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/
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