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 solar radiation storm reached S2 – Moderate levels on October 27, 2024, following a powerful X1.8 flare on October 26. Elevated levels of high-energy protons are expected to persist, potentially impacting high-altitude flights, satellite operations, and polar radio communications.
Early on Sunday, September 8, 2024 (UTC), a magnetic filament erupted from the Sun’s northwest quadrant (N16W22), releasing an Earth-directed coronal mass ejection (CME). The CME is expected to impact Earth on September 10, potentially triggering a G2 – Moderate geomagnetic storm. Concurrently, heightened activity near the Sun’s west limb has caused a sharp increase in proton levels, resulting in an S1 – Minor solar radiation storm at 08:50 UTC today.
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 strong, long-duration solar flare measuring M9.7 erupted from Active Region 3697 at 01:49 UTC on June 8, 2024. The event started at 01:23 and ended at 02:19 UTC, producing a strong CME. Shortly after, solar radiation storming began on Earth, reaching the S3 – Strong threshold at 08:00 UTC.
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.
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.
