Space Weather Message Code: ALTK06
Serial Number: 481
Issue Time: 2021 Oct 12 0448 UTC
ALERT: Geomagnetic K-index: 6
Threshold Reached: 2021 Oct 12 0447 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: YES!
NOAA Scale: G2 – Moderate
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.