A coronal mass ejection (CME) produced by the M3.3 solar flare at 10:39 UTC on January 21, 2025, is expected to deliver a glancing blow from late January 24 into January 25. This was a long-duration flare that started at 10:08 UTC and ended at 11:00.
An impulsive solar flare measuring M7.4 erupted from Active Region 3964 at 13:35 UTC on January 17, 2025. The event started at 13:24 and ended at 13:39 UTC.
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.
Two coronal mass ejections (CMEs) produced on December 29, 2024, impacted Earth on December 31, causing G4 – Severe geomagnetic storm on January 1, 2025. A slow return to nominal levels is expected by late on January 2. Late on January 3 to early on January 4, a potential glancing blow from the January 1 CME is likely to cause another enhancement.
At least two coronal mass ejections (CMEs) are heading toward Earth, with impacts expected on December 31 and January 1, 2025. The first CME — much stronger, was produced by a filament eruption associated with an M2.0 flare at 04:30 UTC on December 29 from Active Region (AR) 3939. This resulted in an asymmetric, partial-halo CME first seen in NASA coronagraph imagery at approximately 06:24 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 powerful coronal mass ejection (CME) with an estimated speed of 3 161 km/s erupted on the Sun’s farside around 16:00 UTC on Tuesday, December 17, 2024.
