Dear Collaborators,

Solar activity continues at a very low level. The largest event during the period was a C3.1 flare produced by NOAA 13831. 13831 also produced a C1.7 flare. Today the target will switch to 13831 that has developed to a beta/D-type region. Note that another region of NOAA 13834 also produced two low C-class flares. Yesterday's target NOAA 13825 has been flare quiet since the last message. Additional C-class flares are expected in the next 24 hours.

The position of NOAA 13831 on September 21 at 07:30 UT is:

N12W13 (211", 85")

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,

Ying Li (Purple Mountain Observatory)