G1 – Minor Geomagnetic Storm Watch issued for November 6, 2025

A G1 – Minor Geomagnetic Storm Watch was issued for November 6, 2025. According to the latest alert from the NOAA Space Weather Prediction Center (SWPC), no geomagnetic storming reaching G1 – Minor levels is expected on November 4 or November 5. Activity reaching G1 – Minor thresholds is possible on November 6, 2025. This watch supersedes any and all prior watches in effect.

The potential impacts from this level of geomagnetic activity are expected primarily poleward of 60 degrees geomagnetic latitude. Weak power grid fluctuations can occur in affected regions. Minor impacts on satellite operations are possible. Aurora may become visible at high latitudes, including parts of the northern United States such as northern Michigan and Maine. These impacts are consistent with a G1 – Minor Geomagnetic Storm as classified by NOAA SWPC.

The watch follows recent high levels of solar activity, including a pair of M-class solar flares from sunspot region 4274. An M1.6 flare occurred at 09:25 UTC and a long-duration M5.0 flare peaked at 10:11 UTC on November 3, 2025. These events were associated with a Castelli-U radio burst and coronal dimming. Further analysis of any related Earth-directed coronal mass ejections (CMEs) is ongoing as imagery becomes available.