Space Weather Message Code: WATA30
Serial Number: 190
Issue Time: 2021 Sep 02 1821 UTC
CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 189
Original Issue Time: 2021 Aug 30 2039 UTC
Comment: G2 (Moderate) geomagnetic storm conditions no longer expected.
NOAA Space Weather Scale descriptions can be found at
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.