Minor C8.6 solar flare erupts at 10:02 UTC on November 10, 2026

A minor C8.6 solar flare erupted at 10:02 UTC on November 10, 2026.

Today’s flare events include several C-class solar flares. The largest reported event is a C9.3 flare that began at 08:11 UTC, peaked at 08:34 UTC, and ended at 08:40 UTC from active region 4566. Other flares for the day include a C1.3 flare (01:07–01:30 UTC, region 4566), C1.8 (01:30–01:57 UTC), C2.3 (03:22–03:51 UTC), C1.8 (06:26–06:44 UTC), and C2.1 (06:51–06:59 UTC).

In 24 hours to 00:30 UTC on November 10, solar activity was at low levels with multiple C-class flares observed. The majority were produced by region 4566 with the largest flare a C5.7 at 04:10 UTC. No Earth-directed CMEs were detected.

M-class flares (R1 – Minor to R2 – Moderate radio blackouts) are likely, with a slight chance for an X-class flare (R3 – Strong), from November 10 to 12.

Active sunspot regions presently observed on the Earth-facing solar disk include AR 4565 (N12W59 – Alpha), AR 4566 (S07W21 – Beta-Gamma-Delta), AR 4568 (S08W01 – Beta), AR 4571 (S14W67 – Beta), and AR 4572 (N12E70 – Alpha).

Over the past 24 hours, the greater than 2 MeV electron flux reached high levels, peaking at 4 674 pfu. The greater than 10 MeV proton flux remained at background levels. The greater than 2 MeV electron flux is likely to remain high over November 10 to 12. There is a slight chance for the greater than 10 MeV proton flux to exceed S1 – Minor solar radiation storm levels.

Solar wind parameters reflected the influence of a negative polarity coronal hole high speed stream during the past 24 hours. The total magnetic field ranged from 2–5 nT and Bz varied between +/-4 nT. Solar wind speed decreased from about 781 km/s to near 635 km/s. These enhanced conditions are expected to gradually diminish on November 11 to 12.

The geomagnetic field was mostly unsettled under persistent coronal hole high speed stream influence. Quiet to active geomagnetic conditions are expected on November 10 as coronal hole influences persist, followed by quiet to unsettled levels on November 11 to 12 as activity gradually declines.