Dear Collaborators,

The level of solar activity is moderate. Target region NOAA 13645 remained stable in sunspot area and number of spots since the last message, continuing in classification as a beta-gamma/D-type spot group. This region was one of three to produce low M-class flares in the period (an M1.0 on 25-Apr-2024 at 01:40 UT) with the other NOAA regions being 13647 (a beta/D-type spot group, with an M1.1 on 24-Apr-2024 at 22:27 UT) and 13638 (a beta/C-type spot group, with an M2.0 on 24-Apr-2024 at 22:54 UT and M1.0 on 25-Apr-2024 at 13:11 UT). The default target will remain as NOAA 13645, but their close proximity to each other and strong foreshortening effects with being near the South West limb may allow observers to include NOAA 13645 and one or both of these other two regions within their field-of-view. More low M-class activity is probable in the next 24 hours, with a chance for a >M5 flare.

The position of NOAA 13645 on 25-Apr-2024 at 16:00 UT is:

S08W80 , ( 930", -119" )

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,

Shaun Bloomfield (Northumbria University)