Moderately strong M4.2 solar flare erupts from Region 3519
A moderately strong solar flare measuring M4.2 erupted from Active Region 3519 at 05:38 UTC on December 21, 2023. The event started at 05:19 and ended at 05:49 UTC.
X2.8 solar flare produces Earth-directed CME, impact expected late December 16 to early December 17
A major solar event occurred on December 14, 2023, when a powerful solar flare measuring X2.8 erupted from Active Region 3514. This event, which started at 16:47 and ended at 17:12 UTC, is the strongest solar flare since September 10, 2017, and the strongest solar flare of the current Solar Cycle.
Major X2.8 solar flare erupts from Region 3514
A powerful solar flare measuring X2.8 erupted from Active Region 3514 at 17:02 UTC on December 14, 2023. The event started at 16:47 and ended at 17:12 UTC. This is the strongest solar flare of the current Solar Cycle.
M5.8 solar flare and multiple CMEs, minor geomagnetic storms expected by December 16
Solar activity increased to high levels in 24 hours to 12:30 UTC on December 14, 2023, with M5.8 solar flare at 07:44 UTC from Region 3514 and multiple coronal mass ejections (CMEs).
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 impact Earth, sparking G3 – Strong geomagnetic storm
Multiple coronal mass ejections (CMEs) produced on November 27 and 28, 2023, impacted Earth on December 1, sparking G3 – Strong geomagnetic storm. Similarly to the last G3 storm, on November 5, spectacular aurora sightings were reported from both hemispheres.
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.
Global SAR arc outbreak: Geomagnetic storm leads to rare SAR arc sightings across the globe
On November 5, 2023, observers across the globe were treated to a striking light show, courtesy of a G3 – Strong geomagnetic storm. This solar event was powerful enough to push the typically high-latitude auroras into lower latitudes, with sightings as far south as Texas and Arizona in the United States, as well as in European countries like Italy and Greece. Sightings were also reported in Australia and New Zealand.
