X1.1 solar flare produces Earth-directed CME, G2 geomagnetic storm watch issued for July 3
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July 1, 2026
An X1.1 solar flare from Active Region 4479 produced a full-halo coronal mass ejection (CME) on June 30, 2026, prompting SWPC to issue a G2 - Moderate Geomagnetic Storm Watch for July 3.
Source
Discussion in the ATmosphere