G1 – Minor Geomagnetic Storm Watch issued for April 2, 2026

A G1 – Minor Geomagnetic Storm Watch has been issued for April 2, 2026. NOAA SWPC predicts that conditions could reach G1 – Minor storm levels on April 2, following G2 – Moderate storming expected on April 1. This Watch supersedes all prior watches in effect.

The potential impacts from this geomagnetic activity are expected primarily poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations may occur, and there may be minor impacts on satellite operations. The aurora could become visible at higher latitudes, including northern parts of the United States such as northern Michigan and Maine.

This Watch is being issued due to predicted geomagnetic activity following the arrival of a coronal mass ejection (CME) associated with the X1.4 solar flare that occurred at 03:19 UTC on March 30, 2026, from Region 4405. Forecasts suggest CME effects will wane through April 2, transitioning to high-speed stream influences later in the day.