G1 – Minor Geomagnetic Storm Alert issued on July 1, 2026

A G1 – Minor Geomagnetic Storm Alert was issued for July 1, 2026. The official NOAA SWPC alert indicates the Geomagnetic K-index reached a value of 5 at 02:59 UTC, with the synoptic period covering 00:00 UTC to 03:00 UTC. The alert is active, with conditions reaching the G1 – Minor level on the geomagnetic storm scale.

Potential impacts primarily affect regions poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations are possible due to induced currents, and minor impacts on satellite operations may occur. Auroras could be visible at high latitudes, including the northern tier of the United States such as northern Michigan and Maine. These impacts correspond to the G1 – Minor classification on NOAA’s space weather scales.

The alert was triggered by ongoing geomagnetic activity linked to continued CME effects following recent solar activity. Forecast discussion notes that unsettled to G1 (Minor) geomagnetic field conditions arose during the latter half of the previous UTC day, following the arrival of a CME that left the Sun on June 26, 2026. Enhanced solar wind conditions are expected to persist, with additional CME influence possible in the coming days.