G1 – Minor Geomagnetic Storm Alert issued on April 2

A G1 – Minor Geomagnetic Storm Alert was issued on April 2, 2026, after the Geomagnetic K-index reached 5 at 07:50 UTC. The alert covers the synoptic period from 06:00 to 09:00 UTC, according to the NOAA Space Weather Prediction Center.

The potential impacts of this G1 – Minor event are expected to affect regions primarily poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations can occur due to induced currents, while minor impacts may be experienced by satellites. There is also potential for auroral activity at high latitudes, including the northern tier of the United States such as northern Michigan and Maine.

According to the latest space weather forecast, the geomagnetic storm is related to further solar wind disturbances anticipated around midday on April 2, as a negative polarity coronal hole high speed stream (CH HSS) becomes geoeffective. Geomagnetic field conditions are forecast to remain at unsettled to G1 – Minor storm levels, with possible isolated periods of G2 – Moderate activity.