Dear Collaborators,
Solar activity has been at a moderate-to-low level since the last message. Yesterday's target region NOAA 13340 retained a beta-gamma/E-type configuration and only produced two C1 flares in the period. It continues to decay. The largest event in the period was a C5.5 flare from NOAA 13354 (N14W07) at 18:33 UT yesterday. 13354 remained as the largest sunspot group on the visible disk, which has increased in magnetic complexity and been classified as a beta-gamma-delta/E-type configuration with minor mixed polarities within its intermediate portion. Today the target shall switch to NOAA 13354. Please note that the nearby region NOAA 13351 (N21W12, beta/B-type) also produced a C5.0 flare in the period. If possible, please also include NOAA 13351 in your field of view. Further C-level flares are expected in the following 24 hours, with a chance for an isolated M-class flare.
The position of NOAA 13354 on 29-Jun-2023 at 07:30 UT is:
N14W07 (112", 187")
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, Ying Li (Purple Mountain Observatory)