Look outside right now, if you can and see Auroras where you are.
Site to see the magnetosphere.
Here is the Alert on the NOAA spaceweather site:
Space Weather Message Code: WARK06
Serial Number: 191
Issue Time: 2012 Mar 12 1020 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Mar 12 1020 UTC
Valid To: 2012 Mar 12 1800 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
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 Washinton state.
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