Status Report

NOAA Space Weather WARNING: Geomagnetic K-index of 7 or greater expected

By SpaceRef Editor
April 23, 2012
Filed under , , ,

Space Weather Message Code: WARK07
Serial Number: 37
Issue Time: 2012 Apr 24 0204 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2012 Apr 24 0205 UTC
Valid To: 2012 Apr 24 0600 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater – Strong to Extreme

NOAA Space Weather Scale descriptions can be found at

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.

SpaceRef staff editor.