G1 – Minor Geomagnetic Storm Alert issued on April 2

A G1 – Minor Geomagnetic Storm Alert was issued on April 2, 2026, following the detection of a geomagnetic K-index of 5. The alert is active and covers the period from 09:00 UTC to 12:00 UTC.

According to NOAA SWPC, the primary area of impact is expected to be poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations may occur due to induced currents, and minor impacts on satellite operations are possible. Aurora sightings may be visible at high latitudes, particularly in regions such as northern Michigan and Maine.

The alert coincides with anticipated solar wind disturbances, as a negative polarity coronal hole high speed stream (CH HSS) is expected to influence Earth’s geomagnetic environment around midday on April 2. The geomagnetic field is forecast to remain at unsettled to G1 (Minor) storming levels, with possible brief periods reaching G2 (Moderate) levels as these solar wind effects continue.