WARNING: Geomagnetic K-index: 7 or greater (G3 or Greater)

Space Weather Message Code: WARK07
Serial Number: 79
Issue Time: 2021 Nov 03 2205 UTC

WARNING: Geomagnetic K-index: 7 or greater expected
Valid From: 2021 Nov 03 2204 UTC
Valid To: 2021 Nov 04 0300 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater – Strong to Extreme

NOAA Space Weather Scale descriptions can be found at Scales Explanation
www.swpc.noaa.gov/noaa-scales-explanation

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.

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