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M6.6 solar flare with earth-directed CME

Sunspot region 3664 is now close to the west limb and quieted down a bit compared to last week. Nonetheless it was the source of an eruptive long duration M6.6 solar flare (R2-moderate) that peaked at 9:44 UTC.

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Sunday, 1 February 2026

Complex sunspot region 4366

Monday, 19 January 2026

CME impact! S4 solar radiation storm

Sunday, 18 January 2026

X1.9 solar flare with earth-directed CME

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AR4366 411 Do the high-resolution sunspot counts point to more complex sunspots? 42 Space Weather Memes 781 Incoming & Unnumbered Active Regions 141 Current Farside Activity 350

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