Large filament eruption produces partial-halo CME, impact to Earth expected on November 5
A large filament eruption centered near N30W30 was observed in H-alpha imagery around 05:00 UTC on November 3, 2023.
Strong M8.7 solar flare erupts from Region 3435
A strong solar flare measuring M8.7 erupted from Active Region 3435 at 12:54 UTC on September 21, 2023. The event started at 12:42 and ended at 13:02 UTC. This is the second M8+ solar flare since M8.2 at 14:11 UTC on September 20.
Strong M8.2 solar flare erupts from Region 3435
An impulsive solar flare measuring M8.2 erupted from Active Region 3435 at 14:19 UTC on September 20, 2023. The event started at 14:11 and ended at 14:25 UTC.
G2 – Moderate to G3 – Strong geomagnetic storm conditions forecast for September 19
An approximate 35-degree solar filament eruption centered near N22W17 began lifting off at 04:34 UTC on September 16, 2023. The event resulted in a halo coronal mass ejection (CME) that was first observed off the W limb at 09:12 UTC. Analysis of the filament eruption and subsequent halo CME determined a likely arrival early on September 19.
Major X1.5 solar flare erupts from Region 3386
A major solar flare measuring X1.5 erupted from the recently departed Active Region 3386 at 20:46 UTC on August 7, 2023. The event started at 20:30 and ended at 21:18 UTC.
Long-duration X1.6 solar flare erupts from Region 3386; S1 – Minor radiation storm
A major, long-duration solar flare measuring X1.6 erupted from Active Region 3386 (beta-delta) at 22:21 UTC on August 5, 2023. The event started at 21:45 and ended at 22:44 UTC.
Solar filament eruption produces Earth-directed CME, impact expected late August 4 to early August 5
An active filament channel in the vicinity of Region 3386 erupted simultaneously with M1.3 solar flare at 08:12 UTC on August 2, 2023, producing an Earth-directed CME.
Double-peaked, long-duration M5.7 solar flare from AR 3363 produced asymmetric halo CME, S2 – Moderate solar radiation storm
A double-peaked, long-duration solar flare measuring M5.7 erupted from Active Region 3363 (beta-delta) at 00:06 UTC on July 18, 2023, producing an asymmetric halo CME and S2 – Moderate solar radiation storm.
Moderately strong M6.8 solar flare erupts from the NE limb of the Sun
A moderately strong solar flare measuring M6.8 erupted from a region located on the northeastern limb of the Sun at 18:08 UTC on July 11, 2023. The event started at 17:51 and ended at 18:16 UTC.
Slow-moving Earth-bound CME estimated to arrive July 9 – 10
Active Region 3360 (beta) produced a C8.9 solar flare on July 3, 2023, producing an Earth-directed coronal mass ejection (CME) which is expected to hit Earth on July 9 or 10. The event started at 21:02 UTC, peaked at 21:12, and ended at 21:22.
