Space Weather Alert

Space Weather Message Code: ALTK06
Serial Number: 302
Issue Time: 2013 Mar 17 0904 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Mar 17 0842 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
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 Washington 

state.

Source:

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

http://www.n3kl.org/sun/noaa.html