A major long-duration solar flare measuring X4.0 erupted from Active Region 4274 at 08:30 UTC on November 14, 2025, producing a fast CME. The event started at 07:44 and ended at 08:40 UTC.
A major solar flare measuring X2.7 erupted from Active Region 4087 at 08:19 UTC on May 14, 2025. The event began at 08:04 and ended at 08:31 UTC. This is the 8th X-class solar flare of the year and the strongest to date. It currently ranks as the 15th most powerful flare of Solar Cycle 25, exceeding the X2.56 event observed on February 16, 2024. This is also the second X-class flare within the past 24 hours, following an X1.2 flare at 15:38 UTC on May 14 from a region near the Sun’s west limb.
A major solar flare measuring X1.2 erupted from Active Region 4086 at 15:38 UTC on May 13, 2025. The event started at 15:25 and ended at 15:44 UTC. This is the seventh X-class solar flare of the year and the first since March 28, tying for the third strongest with the X1.2 flare on January 3.
A major solar flare registered as X2.3 erupted from Active Region 3883 at 13:40 UTC on November 6, 2024. The event started at 13:24 and ended at 13:46 UTC. Meanwhile, a glancing blow from the CME associated with the M3.8 on November 4 is expected on November 7.
A major, long-duration solar flare measuring X1.8 erupted from Active Region 3872 at 07:19 UTC on October 26, 2024. The event started at 05:57 and ended at 07:56 UTC. A large coronal mass ejection (CME) was produced during the event.
A major, long-duration solar flare measuring X3.3 erupted from the Sun’s southeast limb at 03:57 UTC on October 24, 2024. The event started at 03:30 and ended at 04:28 UTC. The source is returning Region 3842.
An impulsive solar flare measuring X1.4 erupted beyond the Sun’s west limb at 15:47 UTC on October 9, 2024. The event started at 15:44 and ended at 15:53 UTC.
A major solar flare measuring X1.2 at its peak erupted from AR 3182 at 00:57 UTC on January 6, 2023. The event started at 00:43 UTC and ended at 01:07 UTC.
A major solar flare, measuring X1.0 at its peak at 20:25 UTC, erupted on October 2, 2022, from Active Region 3110. The event started at 19:53 and ended at 20:34 UTC.
