Minor C8.8 solar flare erupts at 13:18 UTC on June 6, 2026

A minor C8.8 solar flare erupted at 13:18 UTC on June 6, 2026.

Today’s flares include a C2.1 event from region 4456 at 03:59 UTC, a C1.7 event from region 4455 at 04:16 UTC, and a C3.1 event from region 4456 at 06:30 UTC. No X-class or M-class flares have been reported so far for this period.

In 24 hours to 12:30 UTC on June 6, solar activity remained at low levels with isolated C-class flare activity observed. The strongest event in the period was a C4.7 flare at 22:45 UTC on June 5. Several active regions showed minor evolution, but activity stayed subdued.

Solar activity is expected to remain at low levels, but there is a 50% chance for isolated M-class flare activity through June 8, 2026.

Over the past 24 hours, the greater than 2 MeV electron flux at geosynchronous orbit was at low to moderate levels, while the greater than 10 MeV proton flux remained at background levels. The greater than 2 MeV electron flux is anticipated to rise to high levels on June 6 in response to CME effects and to remain high through June 8. The greater than 10 MeV proton flux is expected to remain at background levels barring a new significant event.

Solar wind parameters reflected CME arrivals from June 3 events, beginning at 04:25 UTC on June 5. The total field increased from 7 nT to 17 nT following the shock and peaked at 20 nT. The IMF Bz reached as low as -17 nT for sustained periods. Solar wind speeds rose to the 640–740 km/s range. Total field and solar wind parameters began returning to nominal levels after about 19:20 UTC on June 5. An additional disturbance to the solar wind environment cannot be ruled out for the remainder of June 6 due to lingering CME influences. These effects are expected to wane over June 7 and 8.

Geomagnetic field activity reached G1 – Minor geomagnetic storm levels with an isolated G2 – Moderate storming episode between 15:00 and 18:00 UTC. G1-G2 (Minor-Moderate) geomagnetic storming is expected to continue during the early portions of June 6 due to CME effects. Quiet to unsettled conditions are anticipated on June 7 and 8 as CME and coronal hole influences diminish.