Geomagnetic Storm Category G2 Predicted -- Issue Time: 2014 Sep 101350 UTC

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.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/NOAAscales

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.