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C4.8 solar flare

A new sunspot region that received sunspot number 2736 earlier today erupted with a long duration C-class solar flare. The solar flare peaked at 11:18 UTC and reached a maximum X-ray flux of C4.8. The eruption was associated with a Type II radio sweep which indicated straight away that this event was likely to be eruptive and thus launched a coronal mass ejection into space.

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Sunday, 1 February 2026

Complex sunspot region 4366

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AR4366 977 Do the high-resolution sunspot counts point to more complex sunspots? 51 Feb 8-9 CMEs 12 AR 4371 19 AR 4373 3

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