Dear Collaborators,

Solar activity has reached intermediate levels. The largest event since the last message was a C4.8 flare at 10:46 UT on 31-Jan-2023 produced by the limb target region, which was newly numbered as NOAA 13207 and was classified as a beta/C-type sunspot group. This region stays the most productive and has produced 6 C-class flares. Today the target shall still be this region. Please note that a plage region (N20E24) also produced 4 low C-class flares during the period. Further C-class activities are expected in the following 24-hour period.

The position of NOAA 13207 on 31-Jan-2023 12:30 UT

S13E64 (-854", -175")

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,

Qiao Li, Ying Li (Purple Mountain Observatory)