Viewing archive of Tuesday, 18 April 2017

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Old sunspot region 2644 is back!

The remnants of old sunspot region 2644 (which was responsible for seven M-class solar flares during the first few days of this month) have now rotated back onto the earth-facing solar disk. It should receive sunspot number 2651 later today from the NOAA SWPC.

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Sunday, 7 December 2025

M8.1 solar flare with earth-directed CME

Monday, 1 December 2025

X1.9 solar flare, Coronal hole faces Earth

Friday, 14 November 2025

X4.0 solar flare

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AR4294 / 4296 / 4298 438 Light pillar 5 AR4299 M8.1 CME 2025/12/06 274 AR 4299 153 Geomagnetic Data / Monitoring 6

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