Space Weather Prediction Center

National Oceanic and Atmospheric Administration

G3 (Strong) Geomagnetic Storm Alerts Issued

G3 (Strong) Geomagnetic Storm Alerts Issued
published: Sunday, March 22, 2026 12:40 UTC UTC

Update: G3 (Strong) geomagnetic storm conditions were observed at 20/2328 UTC and again at 21/0154 UTC. A warning for G3 or greater storming conditions is currently valid until 0600 UTC on 21 March. This geomagnetic activity is likely from the arrival of the CME that left the Sun on 18 March.