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.
Geomagnetic storm reaches G3 – Strong level after dual CME impact
A G3 – Strong geomagnetic storming was observed on Sunday, November 5, 2023, as a result of the impact of two successive coronal mass ejections (CMEs) from the Sun. The storm produced auroras extending into the lower latitudes such as Colorado and Texas in the United States and Greece in Europe, which is unusual for such regions. Many people across both hemispheres have also recorded and captured rare red aurora.
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.
Revised NOAA forecast predicts stronger Solar Cycle 25, peak in 2024
NOAA’s Space Weather Prediction Center (SWPC) has revised its forecast for Solar Cycle 25, predicting a quicker and more intense peak in solar activity between January and October 2024. The updated prediction challenges the previous expert panel’s forecast from 2019.
Rare pure sine wave detected in Earth’s magnetic field
On October 17, Rob Stammes, a Norwegian citizen scientist, detected a rare magnetic oscillation in Earth’s magnetic field from his space weather observatory in Lofoten, Norway. The event, termed a “pulsation continuous” or Pc3 in this case, lasted for over 20 minutes and was caused by a gentle gust of solar wind.
Rare red auroras seen as far south as France
The Coronal Mass Ejection (CME) that was launched on September 22, 2023, hit Earth’s magnetic field on September 24 at 20:43 UTC, sparking a moderate G2 – Moderate geomagnetic storm and rare red auroras. Initially detected in Canada where magnetometer readings spiked by 129 nT, the event later became visible across Europe, reaching as far south as France.
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.
