Dear Collaborators,

Solar activity remains low since the last message. The largest event during the period was a C3.9 flare at 09:08 UT today from NOAA 14475 (S09W13, beta-gamma/D-type), which also produced a C3.1 flare later in the period. The target region NOAA 14478 (S06E39, beta-gamma-delta/F-type) produced several low C-class flares and remains the largest and most magnetically complex region on the visible disk. Continued significant flux emergence is still visible in NOAA 14478, especially in its central part. Today, we will continue with NOAA 14478 as the target region. Further C-class activity is expected, with a chance of an isolated low M-class flare in the next 24 hours.

The position of NOAA 14478 on 27-Jun-2026 11:30 UT is:

S06E39 (-592", -130")

See http://www.SolarMonitor.org for images and http://solar.physics.montana.edu/max_millennium/ops/observing.shtml for a description of the current Max Millennium Observing Plan.

Regards,

De-Chao Song (Purple Mountain Observatory)