Dear Collaborators,
Solar activity is at a mid-to-low level. The largest event since the last message was an M1.8 flare at 01:18 UT today from yesterday's target region NOAA 14168 (N05W91). 14168 continues to be the most flare-productive region, producing over ten C-class flares and four additional low M-class flares during the period. This region has now rotated beyond the northwest limb, with overlying loops visible above the limb. In addition, a northeast limb region (N08E89, unnumbered) and NOAA 14172 (N08W27) have also produced several mid-to-high C-class flares. 14172 has a beta-gamma configuration and is experiencing notable flux emergence near its intermediate portion. Today, the target region will switch to NOAA 14172. Further C-class activity is expected, with the possibility of low M-class flares in the next 24 hours.
The position of NOAA 14172 on 12-Aug-2025 at 15:30 UT is:
N08W27 (427",36")
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)
mmmotd@solar.physics.montana.edu