G1 – Minor Geomagnetic Storm Alert issued on March 22

A G1 – Minor Geomagnetic Storm Alert was issued on March 22, 2026. The alert was issued by the Space Weather Prediction Center at 19:37 UTC as the geomagnetic K-index reached 5 at 19:29 UTC, with the alert valid for the 18:00–21:00 UTC synoptic period.

According to the official alert, the area of impact is primarily poleward of 60 degrees geomagnetic latitude. Potential impacts include weak power grid fluctuations, minor effects on satellite operations, and aurora visibility at high latitudes, including the northern tier of the United States such as northern Michigan and Maine.

The latest forecast discussion indicates that the solar wind environment remains enhanced due to waning coronal mass ejection (CME) effects, with additional disturbances from a coronal hole high-speed stream expected to continue through March 24. No Earth-directed CMEs were observed, and solar activity is otherwise at low levels.