Impulsive M5.4 solar flare erupts from Region 3511, multiple filament eruptions
An impulsive solar flare measuring M5.4 erupted from Active Region 3511 at 23:07 UTC on December 8, 2023. The event started at 22:57 UTC and ended at 23:14.
Multiple CMEs heading toward Earth, G3 – Strong Geomagnetic Storm Watch in effect
Multiple coronal mass ejections (CMEs) produced on November 27 and 28, 2023 are heading toward Earth, with impacts expected from late November 30 to mid-day UTC on December 1, 2023. As a result, a G3 – Strong Geomagnetic Storm Watch is in effect for December 1.
M9.8 solar flare erupts from geoeffective Region 3500, Earth-directed CME likely
A very strong solar flare measuring M9.8 erupted from Active Region 3500 at 19:50 UTC on November 28, 2023. The event started at 19:35 UTC and ended at 20:09 UTC.
Another incoming CME, impact expected on November 11
On November 9, 2023, a low-level C-Class solar flare and a full halo coronal mass ejection (CME) were observed, starting shortly after 11:15 UTC. This solar activity, occurring near the Sun’s center disk, is anticipated to impact Earth by November 11, around 18:00 UTC, potentially triggering a G2 – Moderate geomagnetic storm. Concurrently, a minor polar cap absorption event is affecting shortwave radio transmissions in polar regions.
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.
Two CMEs strike Earth, producing G3 – Strong geomagnetic storm
Two coronal mass ejections (CMEs) impacted Earth on September 18, 2023, producing G3 – Strong geomagnetic storming.
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.
