Moderate M2.9 solar flare erupts at 12:35 UTC on November 3, 2025

A moderate M2.9 solar flare erupted at 12:35 UTC on November 3, 2025.

Today’s flares include a strong M5.0 flare (peaked at 10:11 UTC, region 4274), a moderate M1.6 flare (peaked at 09:25 UTC, region 4274), and multiple C-class flares such as C7.1 (peak 04:30 UTC, region 4274) and C3.0 (peak 06:49 UTC, region 4272). No X-class flare was recorded in the available data.

In 24 hours to 12:30 UTC on November 3, solar activity reached high levels following two M-class events including an M1.6 flare (peak 09:25 UTC) and a long-duration M5.0 flare (peak 10:11 UTC), both from region 4274. Other regions produced C-class flares, with no X-class events or other major eruptions.

Solar activity is expected to remain at low levels, with an increasing chance for M-class flares through November 4 as region 4274 rotates further onto the visible disk. By November 5, M-class flares are likely, and there is a slight chance for an isolated X-class flare.

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 12 610 pfu at 16:50 UTC on November 2. The greater than 10 MeV proton flux remained near background levels. The greater than 2 MeV electron flux is forecast to remain at moderate to high levels as CH HSS influence wanes, while the greater than 10 MeV proton flux is expected to stay at background levels, with possible enhancements through November 5 as region 4274 transits the disk.

Solar wind parameters remained enhanced under the influence of a positive polarity coronal hole high-speed stream. The total field increased to average near 9 nT after 02:00 UTC, the Bz component was mostly southward near -7 nT, and wind speeds decreased from 450–620 km/s to near 430 km/s by the period end. Phi was predominantly positive. Solar wind parameters are expected to remain slightly enhanced as CH HSS effects diminish, with a return to ambient conditions by November 5 barring the arrival of any CMEs.

The geomagnetic field was at quiet to unsettled levels, with isolated active periods during the 15:00–18:00 UTC window on November 2 and 06:00–12:00 UTC on November 3, attributed to gradually diminishing CH HSS effects. Isolated G1 – Minor storming periods are expected through 15:00 UTC on November 3, followed by unsettled to active levels for the rest of the day as CH HSS effects wane. Quiet and unsettled conditions are likely on November 4, with quiet levels expected from November 5 onward.