Minor C9.3 solar flare erupts at 08:34 UTC on November 10, 2026

A minor C9.3 solar flare erupted at 08:34 UTC on November 10, 2026.

Today’s flares include C1.3 at 01:17 UTC from region 4566, C1.8 at 01:45 UTC, C2.3 at 03:30 UTC, C1.8 at 06:39 UTC, and C2.1 at 06:56 UTC.

In 24 hours to 00:30 UTC on November 10, solar activity was at low levels. The largest reported flare was a C5.7 event. Most C-class flares originated from region 4566, which exhibited both separation and decay within its sunspots. Other spotted regions remained stable or showed slight growth.

M-class flares (R1-R2/Minor-Moderate) 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 with a peak flux of 4 674 pfu, while the greater than 10 MeV proton flux remained at background levels. Elevated electron flux is likely to persist over November 10 to 12, with a slight chance for the greater than 10 MeV proton flux to exceed S1 – Minor levels.

Solar wind parameters reflected the influence of a negative polarity coronal hole high speed stream. The total field measured between 2 and 5 nT and the Bz component ranged within +/-4 nT. Solar wind speed declined from about 781 km/s to 635 km/s, with phi angle predominantly negative. The enhanced solar wind environment is forecast to continue through November 10 and gradually diminish November 11 to 12.

The geomagnetic field was mostly unsettled under the ongoing influence of the coronal hole high speed stream. Quiet to active geomagnetic conditions are anticipated on November 10, with quiet to unsettled levels expected as activity diminishes November 11 to 12.