G1 – Minor Geomagnetic Storm Alert issued on November 1

A G1 – Minor Geomagnetic Storm Alert was issued on November 1, 2026, at 01:17 UTC. The alert is valid for the synoptic period from 00:00 to 03:00 UTC. This alert indicates that a geomagnetic K-index of 5 has been reached and an active warning is in effect according to NOAA’s G1 – Minor scale.

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

According to the latest NOAA SWPC forecast discussion, the geomagnetic activity has been triggered by the ongoing influence from a positive polarity coronal hole high speed stream (CH HSS). Enhanced solar wind conditions are expected to persist through November 2, with a return to nominal conditions forecasted for November 3 as the coronal hole influences wane.