Dear Collaborators,

Solar activity has been at a moderate level after the X3.3 flare yesterday. Out of two bipolars mentioned in yesterday's message, the one on the east was given a new number, NOAA 13872. There is another bipolar region located in the Northeast of the two and designated as NOAA 13873, which produced an M1.2 flare at 07:23 UT today(10/25). These regions are still close to the limb and hard to determine the magnetic connectivity, or pairing of the sunspots.

Active regions NOAA 13869, 13872 and 13873 constitute an active region group with complex magnetic configuration and has been a source of large flares in the past 24-48 hours and will continue to be so for the next 24-48 hours. In the next 24 hours, we will continue the Major Flare Watch on the center area of this active region group (NOAA 13872) where new flux emergence is observed. Additional M class events are expected with the chance of a major (>M5) flare.

The position of the target in NOAA 13872 on 25-October-2024 at 16:30 UT is: S18E60 (-795",-340").

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,

Bill Marquette (Helio Research) Ryan Milligan (Queen's University Belfast) Shaun Bloomfield (Northumbria University) Ying Li (Purple Mountain Observatory)