Dear Collaborators,
Solar activity continues at high levels for the past 24 hours. The largest event since the last message was an M5.7 at 05/20/14:54 UT produced by the target region NOAA 13311. 13311 also produced another three M-class flares including an M5.2 at 05/20/22:52 UT. It has been designated as a beta-gamma-delta/E-type configuration with increasing the sunspot area and number of spots. Please note that NOAA 13305 (N12W78, beta/D-type) was the source of ten C-class flares in the period. Additional low M-class flares are expected with a chance of another >M5 flare in the next few days.
The position of NOAA 13311 on May 21 at 11:30 UT
N18E40 (-581", 317")
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)