Moderate M1.6 solar flare erupts at 09:25 UTC on November 3, 2025

A moderate M1.6 solar flare erupted at 09:25 UTC on November 3, 2025.

Today’s flares include a C7.1 event peaking at 04:30 UTC from region 4274 and a C3.0 event peaking at 06:49 UTC from region 4272. No M-class or X-class flares other than the M1.6 event were recorded in the provided event list for November 3, 2025.

In 24 hours to 00:30 UTC on November 3, solar activity reached moderate levels, primarily due to an M1.0 flare and a long duration C8.2 flare. Other observed regions were unremarkable, and a large CME was detected beyond the eastern limb with no Earth-directed component.

Solar activity is expected to be at low levels, with a chance for M-class flares (R1 – Minor to R2 – Moderate) through November 5 as older active regions return to the northwestern limb.

Active sunspot regions presently observed on the Earth-facing solar disk include AR 4267 (N02W65 – Beta), AR 4272 (N22E63 – Beta), and AR 4273 (S12E27 – Beta).

Over the past 24 hours, the greater than 2 MeV electron flux reached high levels with a maximum flux of 10 260 pfu, while the greater than 10 MeV proton flux remained near background levels. The electron flux is expected to remain at moderate to high levels as coronal hole high speed stream influence wanes, and the proton flux is expected to remain at background levels.

Solar wind parameters continued to be enhanced under the influence of a positive polarity coronal hole high speed stream, with total field ranging from 5 to 8 nT and Bz component reaching -5 to -6 nT during brief southward deflections. Solar wind speeds decreased from about 620 km/s to 490 km/s. Solar wind conditions are expected to gradually return to ambient-like levels by November 5.

The geomagnetic field was unsettled to active due to slowly diminishing coronal hole high speed stream effects. Geomagnetic field activity is predicted to range from unsettled to active, with a chance for an isolated period of G1 – Minor storming on November 3. Quiet and unsettled conditions are expected on November 4, followed by quiet conditions prevailing on November 5.