G2 – Moderate Geomagnetic Storm Alert issued on March 22

A G2 – Moderate Geomagnetic Storm Alert was issued on March 22, 2026, after the geomagnetic K-index reached a value of 6. The alert was issued at 16:06 UTC and is valid for the synoptic period from 15:00 UTC to 18:00 UTC. The affected area is primarily regions poleward of 55 degrees geomagnetic latitude.

Potential impacts from this event include power grid fluctuations, particularly in high-latitude regions where voltage alarms may occur. Satellite operators should be aware of the potential for spacecraft orientation irregularities and increased atmospheric drag on low Earth-orbit satellites. High frequency (HF) radio propagation may be affected, causing communication fading at higher latitudes. Additionally, auroral displays could extend as far south as New York, Wisconsin, and Washington state.

The onset of this geomagnetic storm is linked to waning CME influences and the anticipated arrival of recurrent, negative polarity coronal hole high speed stream (CH HSS) effects. This is supported by enhanced solar wind conditions and forecasts indicating likely G2 – Moderate to G3 – Strong levels of geomagnetic storming on March 22, 2026.