A strong solar flare measuring M9.6 erupted from an active region located on the southeast limb of the Sun at 16:43 UTC on May 16, 2023. The event started at 16:31 and ended at 16:51 UTC.
High solar activity was observed on May 10, 2023, primarily due to the enhanced flare potential of Region 3296. The most significant event from the region was an M4.2 flare, which resulted in a well-defined partial halo Coronal Mass Ejection (CME) signature, expected to hit Earth sometime after 18:00 UTC on May 11. The 10 MeV proton flux peaked at 38 pfu, dropped below Minor – S1 solar radiation storm levels by 12:35 UTC on May 9, but still above average, and then rose back over the 10 pfu threshold due to the May 7 CME passage.
A moderately strong M6.5 solar flare erupted from Active Region 3296 at 03:54 UTC on May 9, 2023. The event started at 03:42 and ended at 04:05 UTC. This was the 12th M-class solar flare since M4.3 on May 3. It was followed by M1.2 at 06:13 UTC, also from Region 3296. The CME produced on May 7 was modeled and analyzed and the likely result is impact to Earth late on May 10 to early May 11.
A long-duration M3.9 solar flare erupted at 08:44 UTC on May 4, 2023. The event started at 08:05 and ended at 09:08 UTC.
A moderately strong M7.2 solar flare erupted from Active Region 3293 at 10:45 UTC on May 3, 2023. The event started at 10:36 and ended at 10:49 UTC.
A moderately strong solar flare measuring M7.1 erupted at 13:09 UTC on May 1, 2023. The event started at 13:02 and ended at 13:09 UTC.
An Earth-facing filament near Active Region 3283 erupted at 18:12 UTC on April 21, 2023, producing an M1.7 solar flare and a strong coronal mass ejection (CME).
A moderately strong solar flare measuring M5.4 erupted from Active Region 3256 at 07:37 UTC on March 30, 2023. The event started at 07:24 and ended at 07:43 UTC.
A moderately strong solar flare measuring M8.6 erupted from Active Region 3234 at 17:50 UTC on February 18, 2023. The event started at 17:35 and ended at 17:56 UTC.
A long-duration solar flare measuring M6.3 erupted from Active Region 3229 at 19:44 UTC on February 25, 2023. The event started at 18:40 and ended at 20:27 UTC.
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