A major solar flare measuring X1.8 erupted from Active Region (AR) 3947 at 12:48 UTC on January 4, 2025. The event started at 12:35 and ended at 12:56 UTC. This is the third X-class solar flare after X1.2 at 11:39 UTC and X1.1 at 22:41 UTC on January 3 — all produced by AR 3947.
A major solar flare measuring X1.1 erupted from Active Region (AR) 3947 at 22:41 UTC on January 3, 2025. The event started at 22:32 and ended at 22:51 UTC. This is the second X-class solar flare produced on January 3 — both from AR 3947. Meanwhile, CME produced on January 1 impacted Earth early January 4, sparking G1 – Minor geomagnetic storm.
A major solar flare measuring X1.2 erupted from Active Region (AR) 3947 at 11:39 UTC on January 3, 2025. This is the first X-class solar flare of 2025. The event started at 11:29 and ended at 11:49 UTC.
Solar activity increased to high levels on December 29 and 30, 2024, producing more than 20 M- and 3 X-class solar flares in just over 24 hours. At least one of these events produced an Earth-directed coronal mass ejection (CME) – with impact expected on December 31. As a result, a G3 – Strong Geomagnetic Storm Watch is in effect.
A major X1.1 solar flare erupted from Active Region 3936 at 07:18 UTC on December 29, 2024. The event started at 07:08 and ended at 07:34 UTC. Two CMEs were noted in LASCO imagery following multiple solar flares today. Initial analysis indicates at least one has a likely Earth-directed component, with a possible arrival early on December 31.
A major solar flare measuring X2.2 erupted from Active Region 3912 at 09:06 UTC on December 8, 2024. The event started at 08:50 and ended at 09:10 UTC.
A major solar flare registered as X2.0 erupted from Active Region 3878 at 21:20 UTC on October 31, 2024. The event started at 21:12 and ended at 21:27 UTC. The flare was immediately followed by a long-duration M9.5 flare. Meanwhile, the solar radiation storm that started on October 26 entered the 7th day and continues at S1 – Minor levels.
A major solar flare measuring X1.8 erupted from Earth-facing Active Region 3848 at 01:56 UTC on October 9, 2024. The event started at 01:25 and ended at 02:43 UTC. A fast-moving full halo coronal mass ejection (CME) was produced during the event, with the impact expected from late October 10 to early on October 11.
A major solar flare measuring X2.1 erupted from Active Region 3842 at 19:13 UTC on October 7, 2024. The event started at 19:02 and ended at 19:31 UTC.
A major solar flare measuring X9.0 erupted from Active Region 3842 at 12:18 UTC on October 3, 2024. The event started at 12:08 and ended at 12:27 UTC. This is thus far the strongest solar flare of Solar Cycle 25.
