Strong (G3) Geomagnetic Storm WATCH Valid for 09 Dec 2025 - National Oceanic and Atmospheric Administration (NOAA) (.gov)
Dec. 8, 2025, 9:51 a.m.
A full-halo coronal mass ejection (CME), associated with an M8.1 flare from Region 4299 at 20:39 UTC on 06 December, is expected to impact Earth early to midday on 09 December, potentially causing pe… [+41 chars]
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