Dear Collaborators,
Solar activity has dropped to a ~C2 level since the last message. The largest event was a partially occulted C2.9 flare at 09:24 UT today from an unnumbered region near the northeast limb (N09E89). This region also produced a C2.3 flare at 09:52 UT today. Its leading portion, which appears to show a high spot maturity, has already been partially visible. Today, the target shall switch to this limb region from NOAA 14188. 14188 (Yesterday’s target) has been flare-quiet during this period. Note that a plage region (N13E26) also produced a C2.5 flare at 02:18 UT today. Additional C-class flares are expected in the next 24 hours.
The approximate position of the target on 20-Aug-2025 at 11:30 UT is:
N09E89 (-900", 150")
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