Major X1.5 solar flare erupts from Region 3386
A major solar flare measuring X1.5 erupted from the recently departed Active Region 3386 at 20:46 UTC on August 7, 2023. The event started at 20:30 and ended at 21:18 UTC.
Long-duration X1.6 solar flare erupts from Region 3386; S1 – Minor radiation storm
A major, long-duration solar flare measuring X1.6 erupted from Active Region 3386 (beta-delta) at 22:21 UTC on August 5, 2023. The event started at 21:45 and ended at 22:44 UTC.
Solar filament eruption produces Earth-directed CME, impact expected late August 4 to early August 5
An active filament channel in the vicinity of Region 3386 erupted simultaneously with M1.3 solar flare at 08:12 UTC on August 2, 2023, producing an Earth-directed CME.
Double-peaked, long-duration M5.7 solar flare from AR 3363 produced asymmetric halo CME, S2 – Moderate solar radiation storm
A double-peaked, long-duration solar flare measuring M5.7 erupted from Active Region 3363 (beta-delta) at 00:06 UTC on July 18, 2023, producing an asymmetric halo CME and S2 – Moderate solar radiation storm.
Moderately strong M6.8 solar flare erupts from the NE limb of the Sun
A moderately strong solar flare measuring M6.8 erupted from a region located on the northeastern limb of the Sun at 18:08 UTC on July 11, 2023. The event started at 17:51 and ended at 18:16 UTC.
Slow-moving Earth-bound CME estimated to arrive July 9 – 10
Active Region 3360 (beta) produced a C8.9 solar flare on July 3, 2023, producing an Earth-directed coronal mass ejection (CME) which is expected to hit Earth on July 9 or 10. The event started at 21:02 UTC, peaked at 21:12, and ended at 21:22.
Long-duration X1.0 solar flare erupts from Region 3354
A long-duration X1.0 solar flare erupted from Active Region 3354 (beta-gamma-delta) at 23:14 UTC on July 2, 2023. The event started at 22:54 and ended at 23:58 UTC.
Major X1.1 solar flare erupts from Region 3341, CME produced
A major solar flare measuring X1.1 erupted from Active Region 3341 at 17:09 UTC on June 20, 2023. The event started at 16:42 and ended at 17:26 UTC.
Strong M9.6 solar flare erupts from the southeast limb of the Sun
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.
Solar radiation storm, CME produced by M4.2 flare expected to hit Earth on May 11
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.