EXTENDED WARNING: Geomagnetic K-Index of 6

Space Weather Message Code: WARK06
Serial Number: 237
Issue Time: 2014 Feb 19 1346 UTC 

 EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 236
Valid From: 2014 Feb 19 0330 UTC
Now Valid Until: 2014 Feb 19 1800 UTC

Warning Condition: Persistence

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.

See also:

Solar Activity Goes Volcanic