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NOAA’s SWPC issued a G3 strong geomagnetic storm watch for June 4 and 5 after three significant flares from sunspot region 4455
Three solar flares erupted from the same sunspot region within a single 10-hour window on June 3, 2026, sending multiple coronal mass ejections toward Earth and prompting NOAA’s Space Weather Prediction Center to issue a G3 Strong Geomagnetic Storm Watch for June 4 and 5.
A G3 geomagnetic storm is expected for Thursday, June 4 and Friday, June 5, which can cause the northern lights.