Space Weather Alert

Space Weather Message Code: WATA30
Serial Number: 102
Issue Time: 2013 Apr 11 1403 UTC

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

Source:

http://www.swpc.noaa.gov/ftpdir/forecasts/ALTS.txt