Impulsive X1.1 solar flare erupts from Region 3697
An impulsive solar flare measuring X1.1 erupted from Active Region 3697 at 22:03 UTC on May 31, 2024. The event started at 21:52 and ended at 22:03 UTC.
Long-duration X1.4 solar flare erupts from old region 3664, partial halo CME produced
A major, long-duration solar flare measuring X1.4 erupted from Active Region 3697 (previously numbered 3664) at 14:37 UTC on May 29, 2024. This is the second X-class solar flare since May 27.
Major X2.8 solar flare erupts from old Region 3664 — now returning into Earth view
A major solar flare measuring X2.8 erupted from the Sun’s southeast limb at 07:08 UTC on May 27, 2024, producing a strong coronal mass ejection (CME). The event started at 06:49 and ended at 07:25 UTC.
Major X2.9 flare erupts on SE limb of the Sun, signals new wave of heightened solar activity
A powerful solar flare measuring X2.9 erupted on the Sun’s southeastern limb at 14:38 UTC on May 15, 2024. The event started at 14:20 and ended at 14:51 UTC. This is the second X-class solar flare after X3.4 at 08:37 UTC from Region 3664 — off the west limb.
X3.4+ solar flare erupts from Region 3664, solar radiation storm continues
A powerful solar flare registered as X3.4 erupted from Active Region 3664 — now located beyond the west limb — at 08:37 UTC on May 15, 2024. The event started at 08:18 and ended at 08:52 UTC. A solar radiation storm continues at S1 – Minor to S2 – Moderate levels since May 13.
Major X8.7 flare erupts from Region 3664 — the strongest solar flare of Solar Cycle 25
A powerful solar flare measuring X8.7 erupted from Active Region 3664 — currently located at the west limb of the Sun — at 16:51 UTC on May 14, 2024. The event started at 16:46 and ended at 17:02 UTC.
X1.7 and long duration M6.6 solar flares erupt from Region 3664, solar radiation storm in progress
Active Region 3664 — the source of numerous Earth-directed coronal mass ejections (CMEs) over the past 7 days — began its transit of the western limb on May 13, 2024. The region remains very active, producing a long-duration M6.6 flare on May 13, associated with a likely Earth-directed CME, and an X1.7 at 02:09 UTC on May 14. Meanwhile, a solar radiation storm is in progress due to activity associated with the same region.
G5 – Extreme geomagnetic storm likely as another set of CMEs merges and impacts Earth on May 12
A fast halo coronal mass ejection (CME) produced by the X5.8 solar flare from Region 3664 at 01:23 UTC on May 11, 2024, is expected to merge with the previous in-transit CMEs and impact Earth by 12:00 UTC on May 12.
Powerful X5.8 solar flare erupts from Region 3664 during G5 – Extreme geomagnetic storm
A major solar flare measuring X5.8 erupted from Active Region 3664 at 01:23 UTC on May 11, 2024. The event started at 01:10 and ended at 01:39 UTC. It took place during G5 – Extreme geomagnetic storm, producing another CME — most likely Earth-directed.
Major X3.9 solar flare erupts from AR 3664 — the 10th X-class flare in just 7 days
A powerful solar flare measuring X3.9 erupted from Active Region 3664 at 06:54 UTC on May 10, 2024. The event started at 06:27 and ended at 07:06 UTC. This is now the 10th X-class solar flare since May 3.
