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X1.9 solar flare, Coronal hole faces Earth

Welcome to December! New month, new solar activity! Sunspot region 4274 took center stage at the beginning of November with numerous X-class events and some gorgeous coronal mass ejections, some of which arrived at Earth and caused severe G4 geomagnetic storm conditions. However she is not done yet. This sunspot region survived its trip around the far side of the Sun and she is flaring again at the start of December but with a new number: 4299. This morning ex-4274 announced her return with an X1.9 (R3-strong) solar flare that peaked at 02:49 UTC!

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Monday, 19 January 2026

CME impact! S4 solar radiation storm

Sunday, 18 January 2026

X1.9 solar flare with earth-directed CME

Wednesday, 31 December 2025

Happy New Year! Celebrate with an M7.1 solar flare!

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Solar flux data and sun images from the German Federal Agency for Cartography and Geodesy 6 Filaments and prominences 473 Do the high-resolution sunspot counts point to more complex sunspots? 29 Solar Transit, Artifacts, or Radiation 78 Alternative to NRC Daily Solar Flux 1

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