[NLRS] Major Aurora Underway

[Bill Smith via NLRS]

Space Weather Message Code: WARK07

Serial Number: 43

Issue Time: 2014 Sep 12 2307 UTC



WARNING: Geomagnetic K-index of 7 or greater expected

Valid From: 2014 Sep 12 2306 UTC

Valid To: 2014 Sep 13 0700 UTC

Warning Condition: Persistence

NOAA Scale: G3 or greater - Strong to Extreme



NOAA Space Weather Scale descriptions can be found at

www.swpc.noaa.gov/NOAAscales



Potential Impacts: Area of impact primarily poleward of 50 degrees 
Geomagnetic Latitude.

Induced Currents - Power system voltage irregularities possible, false 
alarms may be triggered on some protection devices.

Spacecraft - Systems may experience surface charging; increased drag on low 
Earth-orbit satellites and orientation problems may occur.

Navigation - Intermittent satellite navigation (GPS) problems, including 
loss-of-lock and increased range error may occur.

Radio - HF (high frequency) radio may be intermittent.

Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.