Solar Activity Report: December 22-28, 2025 Solar activity was low at the start of the week, with X‑ray flux generally confined to the low C‑class range aside from a few higher C‑class events. Activity increased markedly on December 27, highlighted by an M5.1 flare from active region 14325 at the east limb and a C9.9 flare from active region 14318 near the disk center. M‑class activity continued into December 28, when active region 14325 produced an impulsive M1.3 flare and active region 14317 g
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Solar Activity Report: December 22-28, 2025 Solar activity was low at the start of the week, with X‑ray flux generally confined to the low C‑class range aside from a few higher C‑class events. Activity increased markedly on December 27, highlighted by an M5.1 flare from active region 14325 at the east limb and a C9.9 flare from active region 14318 near the disk center. M‑class activity continued into December 28, when active region 14325 produced an impulsive M1.3 flare and active region 14317 g
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Solar Activity Report: October 13-19, 2025 Solar activity persisted at moderate levels throughout the week, with M-class flares occurring daily. Active Region 14246 was the dominant source, contributing 25 of the 28 M-class flares recorded during the reporting period. The most intense event was an M4.8 flare on October 15. Notably, even after crossing the west limb on October 18, the region continued to produce M-class activity, including M1.0 and M1.8 flares on October 19. There were numerous C
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Solar Activity Report: October 13-19, 2025 Solar activity persisted at moderate levels throughout the week, with M-class flares occurring daily. Active Region 14246 was the dominant source, contributing 25 of the 28 M-class flares recorded during the reporting period. The most intense event was an M4.8 flare on October 15. Notably, even after crossing the west limb on October 18, the region continued to produce M-class activity, including M1.0 and M1.8 flares on October 19. There were numerous C
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Solar Activity Report: November 17-23, 2025 Solar activity remained at low levels throughout the reporting period, predominantly within the B-class flare range. Four high-intensity C-class flares and several weaker C-class events were observed, with the largest—a C9.9—occurring on November 19 from a region just beyond the northeast limb. No Earth-directed CMEs were detected during this interval. The latest helioseismic far-side map indicates the presence of two active regions, both with a high p
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Solar Activity Report: November 17-23, 2025 Solar activity remained at low levels throughout the reporting period, predominantly within the B-class flare range. Four high-intensity C-class flares and several weaker C-class events were observed, with the largest—a C9.9—occurring on November 19 from a region just beyond the northeast limb. No Earth-directed CMEs were detected during this interval. The latest helioseismic far-side map indicates the presence of two active regions, both with a high p
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FacebookNational Solar Observatory
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🌞 Sun activity for November 15, 2023: Big Flare day 🤩 🥳 Whoa! A big increase in flaring! The sun produced 29 flares over the past 24 hours, in contrast to 19 the day before. It’s a sizable jump, especially considering that last week’s sun averaged just 5 flares a day. 😎 Elsewhere on the sun, one of the prominences (ropes of solar material and magnetic fields) that we saw yesterday on the sun’s southwest limb (edge) lifted off into space as a billion-ton blob of plasma. 🫣 This coronal mass e
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