Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Strong Geomagnetic Storm (G3) Watch In Effect for 04-05 June (UTC)

A slide describing the G3 watch in effect with pictures of 3 CMEs.
Strong Geomagnetic Storm (G3) Watch In Effect for 04-05 June (UTC)
published: Wednesday, June 3, 2026 21:17 UTC

Strong Geomagnetic Storm (G3) Watch In Effect 

for 04-05 June (UTC) with three CMEs expected to interact with Earth.