Dear Collaborators,
Solar activity has been at a moderate-to-low level since the last message. NOAA 14224 (beta/C-type, S13W57) produced the largest event – an M1.6 at 18:57 UT yesterday and a C2.2 flare. The target region, NOAA 14217, was the source of four low-C flares. It has developed into a beta-gamma/D-type sunspot group. Today, the target shall continue as 14217 (with NOAA 14224 in the field of view). Note that NOAA 14226 (beta-gamma/D-type, S11E11) also produced two ~C5 flares in the period. Further C-class activity is expected with another low-M flare likely in the following 24 hours.
The position of NOAA 14217 on 25-Sep-2025 at 11:30 UT is:
S17W68 (849", -319")
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 (Purple Mountain Observatory)
mmmotd@solar.physics.montana.edu