Dear Collaborators,
Solar activity has slightly decreased since the last message. The largest event during the period was a C8.4 flare at 18:09 UT yesterday, attributed to NOAA 14178 (N09W70, beta-gamma/D-type). Two flares from the target region NOAA 14172 (N08W39, beta-gamma/E-type) and NOAA 14168 (now beyond the northwest limb) also contributed to the soft X-ray flux. NOAA 14172 and NOAA 14178 also produced several low C-class flares during the period. Today, NOAA 14172 shall remain the target region due to its ongoing flux emergence. Further C-class activity is expected, with a slight chance of a low M-class flare in the next 24 hours.
The position of NOAA 14172 on 13-Aug-2025 at 11:30 UT is:
N08W39 (592",47")
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)