G1 – Minor Geomagnetic Storm Alert issued on April 2, 2026

A G1 – Minor Geomagnetic Storm Alert was issued on April 2, 2026. The alert was triggered when the geomagnetic K-index reached a value of 5 at 20:52 UTC. The active warning covers the synoptic period from 18:00 to 21:00 UTC on April 2, 2026.

Potential impacts from this event are primarily expected poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations may occur due to induced currents. Minor impacts on satellite operations are possible, and auroras may be visible at high latitudes, including the northern tier of the United States such as northern Michigan and Maine.

According to the official SWPC Forecast Discussion issued on April 2, 2026, the geomagnetic field transitioned from quiet to unsettled conditions to active and G1 – Minor storm levels following the influence of a recent coronal mass ejection (CME) combined with the onset of a coronal hole high-speed stream (CH HSS). These combined effects contributed to the currently observed geomagnetic storm activity.