G3 – Strong Geomagnetic Storm Watch issued for June 4 and 5 following three significant solar flares

A G3 - Strong Geomagnetic Storm Watch is in effect for June 4 and 5, 2026, following three significant solar flares from Active Region 4455. NOAA’s Space Weather Prediction Center (SWPC) issued the watch at 14:52 UTC on June 3 after Earth-directed CME components were identified from two eruptions earlier in the day. Source