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Solar Flare History

Last updated: Dec 29, 2025 8:03:49 AM EST • Cache: OK • Results: 43
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This list comes from the GOES X-ray flare feed (currently best as “last 7 days”). Filter to keep it readable.
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Class Begin (ET) Peak (ET) End (ET) Plain-English
C2.8 Dec 28, 2025 6:57 AM EST Dec 28, 2025 7:08 AM EST Dec 28, 2025 7:21 AM EST Small. Minor HF radio effects possible.
C3.2 Dec 28, 2025 3:09 AM EST Dec 28, 2025 3:20 AM EST Dec 28, 2025 3:34 AM EST Small. Minor HF radio effects possible.
C4.0 Dec 28, 2025 2:22 AM EST Dec 28, 2025 2:28 AM EST Dec 28, 2025 2:35 AM EST Small. Minor HF radio effects possible.
C3.3 Dec 28, 2025 12:57 AM EST Dec 28, 2025 1:08 AM EST Dec 28, 2025 1:10 AM EST Small. Minor HF radio effects possible.
C2.6 Dec 28, 2025 12:35 AM EST Dec 28, 2025 12:39 AM EST Dec 28, 2025 12:57 AM EST Small. Minor HF radio effects possible.
C9.8 Dec 27, 2025 5:14 PM EST Dec 27, 2025 5:33 PM EST Dec 27, 2025 5:50 PM EST Small. Minor HF radio effects possible.
C2.4 Dec 27, 2025 4:43 PM EST Dec 27, 2025 4:48 PM EST Dec 27, 2025 4:55 PM EST Small. Minor HF radio effects possible.
C2.9 Dec 27, 2025 10:35 AM EST Dec 27, 2025 10:50 AM EST Dec 27, 2025 11:09 AM EST Small. Minor HF radio effects possible.
C3.2 Dec 27, 2025 9:11 AM EST Dec 27, 2025 9:15 AM EST Dec 27, 2025 9:19 AM EST Small. Minor HF radio effects possible.
C3.7 Dec 27, 2025 8:22 AM EST Dec 27, 2025 8:29 AM EST Dec 27, 2025 8:32 AM EST Small. Minor HF radio effects possible.
C2.5 Dec 27, 2025 5:24 AM EST Dec 27, 2025 5:29 AM EST Dec 27, 2025 5:36 AM EST Small. Minor HF radio effects possible.
C4.5 Dec 27, 2025 2:44 AM EST Dec 27, 2025 2:58 AM EST Dec 27, 2025 3:16 AM EST Small. Minor HF radio effects possible.
C2.8 Dec 27, 2025 1:40 AM EST Dec 27, 2025 1:47 AM EST Dec 27, 2025 1:50 AM EST Small. Minor HF radio effects possible.
C3.7 Dec 27, 2025 12:32 AM EST Dec 27, 2025 12:39 AM EST Dec 27, 2025 12:41 AM EST Small. Minor HF radio effects possible.
M5.1 Dec 26, 2025 8:38 PM EST Dec 26, 2025 8:50 PM EST Dec 26, 2025 8:59 PM EST Medium. Radio blackouts possible on the sunlit side.
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