Minor C7.1 solar flare erupts at 04:30 UTC on November 3, 2025

A minor C7.1 solar flare erupted at 04:30 UTC on November 3, 2025.

Today’s flares include a C-class event beginning at 00:39 UTC and ending at 00:40 UTC, a smaller flare from AR 4272 beginning and peaking at 01:12 UTC and ending at 01:23 UTC, another C-class event at 01:54 UTC, and radio signatures including an RNS and RBR around 02:40–03:09 UTC. No C7.1 flare at 04:30 UTC is listed in today’s available flare events data.

In 24 hours to 00:30 UTC on November 3, solar activity reached moderate levels, primarily due to an M1.0 flare on November 2 at 00:26 UTC from a region beyond the east limb. A long duration C8.2 flare was also observed from AR 4267 at 12:46 UTC on November 2. Additional regions showed emerging or unremarkable activity. A large CME was observed after 11:00 UTC on November 2 but is not expected to impact Earth, and no Earth-directed CMEs were observed in the latest data.

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 old active regions are anticipated to 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), based on current magnetic classifications.

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

Solar wind parameters were elevated under a positive polarity coronal hole high-speed stream, with total magnetic field between 5–8 nT and some southward Bz deflections to -6 nT. Solar wind speeds decreased from approximately 620 km/s to 490 km/s, with the trend expected to continue as coronal hole high-speed stream influence diminishes and ambient solar wind conditions return by November 5.

The geomagnetic field was unsettled to active due to slowly diminishing high-speed stream effects. Geomagnetic field activity is expected to range from unsettled to active levels, with a chance for an isolated G1 (Minor) storming period on November 3. Conditions are forecast to quiet and unsettled levels on November 4 as high-speed stream influences subside, with primarily quiet conditions expected by November 5.