G2 – Moderate Geomagnetic Storm Alert issued on March 22

A G2 – Moderate Geomagnetic Storm Alert was issued on March 22, 2026. The alert, corresponding to a geomagnetic K-index of 6, is valid for the synoptic period from 21:00 UTC to 24:00 UTC. The alert was officially issued by NOAA’s Space Weather Prediction Center at 23:37 UTC, after the K-index threshold was reached at 23:35 UTC.

Potential impacts primarily affect areas poleward of 55 degrees geomagnetic latitude. High-latitude power systems may experience voltage alarms, and power grid fluctuations can occur. Satellite orientation irregularities and increased drag on low Earth-orbit satellites are possible. HF radio propagation may experience fading at higher latitudes. Auroral displays may be visible as far south as New York, Wisconsin, and Washington state.

According to the latest forecast discussion, the geomagnetic storm is driven by ongoing CME influences and additional disturbances from a recurrent, negative polarity coronal hole high-speed stream (CH HSS). These effects are expected to persist through March 24, with G2 – Moderate to G3 – Strong storm levels likely during this period.