Dear Collaborators,
Solar activity continues to be low since the last message. The target region, NOAA 14143 produced 3 low-C class flares but completed Northwest limb passage earlier today. The largest event in the last 24 hours was a C6.4 flare at 20:05 UT yesterday(7/22) from NOAA 14150 at S14E32.
The largest active region, NOAA 14149 retains a beta-gamma type magnetic configuration but stays flare-quiet for more than two days. A newly emerged region in the Southeast quadrant, NOAA 14153 produced 3 low-C class flares yesterday but it is still uncertain if it develops further.
NOAA 14150, currently classified as a beta type, recently added a new sunspot (with positive polarity) at the Northwest side of the main leading sunspot (negative polarity). This region is the source of a C2.5 flare (at 13:31 UT today) in addition to the C6.4 event yesterday. Today, we will observe the leading sunspot of NOAA 14150 as the default target, expecting additional C class events.
The position of the target in NOAA 14150 on 23-July-2025 at 15:30 UT is: S14E18 (-286", -312").
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, Aki Takeda (Montana State University)