Dear Collaborators,

Solar activity is now at a low C-level. The largest event since the last message was an M6.7 flare at 15:32 UT yesterday (12/11) produced by NOAA 13912, which has completely rotated over the west limb. The target region NOAA 13920 (N22E05) was flare-quiet in the period but has now developed into a beta-delta/E-type configuration with a sunspot area of 250 μh. At this time, we are ending the Major Flare Watch campaign, but NOAA 13920 shall remain the target region due to its activity history and magnetic complexity. Additionally, several low C-class flares were produced by NOAA 13922 (S18E43, beta/C-type) and 13917 (S08W33, beta-gamma/D-type). Further C-class activity is expected, with a chance of low M-class flares in the next 24 hours.

The position of NOAA 13920 on December 12 at 08:30 UT is:

N22E05 (-79",375")

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)