- Press Release
- Mar 20, 2023
Severe Space Weather Warning
NOAA has issued a space weather warning of the potential for a geomagnetic K-index of 7 or greater. Severe to extreme space weather conditions may result. Resulting aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Space Weather Message Code: WARK07
Serial Number: 45
Issue Time: 2015 Jan 07 1122 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2015 Jan 07 1122 UTC
Valid To: 2015 Jan 07 1500 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.