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 strong solar radiation storm is currently in progress as a result of a major X1.8 solar flare at 01:56 UTC on October 9, 2024.
An S1 – Minor solar radiation storm has been in progress since 02:50 UTC on July 23, 2024, and is expected to continue through the rest of the day and possibly into July 24.
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.
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.
Proton flux started rising after 07:00 UTC on May 9, 2024, due to increased flare activity from very large and complex Active Region 3664, and reached S1 – Minor solar radiation storm threshold on May 10.
A major, long-duration solar flare measuring X1.1 erupted from Active Region 3614 at 01:33 UTC on March 23, 2024. The event started at 00:58 and ended at 02:21 UTC. A halo CME was produced, with impacts to Earth likely late March 25 or early March 26.
Although solar activity was at low levels over the past 24 hours, multiple long-duration C-class solar flares, associated with activity from Region 3599 as it rotated beyond the west limb, produced coronal mass ejections (CMEs) that sent proton flux rising to S1 – Minor levels.
Proton flux started rapidly rising at 07:30 UTC on February 12, 2024, following what appears to be an eruption from the old Region 3575 – now traversing the farside of the Sun.
Following the M6.7 solar flare from Active Region 3559 on January 29, 2024, enhanced proton levels were recorded, with the greater than 10 MeV reaching the S2 – Moderate threshold and greater than 100 MeV peaking at 0.67 pfu.
