G1 – Minor Geomagnetic Storm Watch issued for April 10 and 11, 2026

A G1 – Minor Geomagnetic Storm Watch has been issued by NOAA’s Space Weather Prediction Center for April 10 and 11, 2026. This Watch supersedes all prior watches currently in effect and indicates that G1 – Minor geomagnetic storm conditions are predicted over these dates. No storm-level geomagnetic conditions are forecast for April 9.

Potential impacts from this event are expected to be limited primarily to areas poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations may occur, and there is the potential for minor impacts on satellite operations. In addition, auroras could become visible at high latitudes, including the northern tier of the United States such as northern Michigan and Maine.

According to the latest forecast discussion, quiet to unsettled geomagnetic conditions are expected on April 8 and 9 as solar wind parameters remain at nominal levels. The predicted G1 – Minor geomagnetic storming on April 10, and possibly very late on April 9, is linked to the anticipated arrival of a corotating interaction region (CIR) ahead of a positive polarity coronal hole high speed stream. No Earth-directed coronal mass ejections have been observed in recent observations.