Dear Collaborators,
Solar activity has increased to a high level since the last message. The largest event in the period was an M7.5 flare at 01:07 UT today from the target region NOAA 14409 (N02W08; see the SSW Latest https://www.lmsal.com/solarsoft/latest_events/#Contiguous_C2.3_and_M7.5_AR4409_N02W03 Events entry https://www.lmsal.com/solarsoft/latest_events/#Contiguous_C2.3_and_M7.5_AR4409_N02W03). This region has remained the dominant source of activity on the visible disk, producing numerous C-class flares and two additional low-M flares (M1.7 and M1.2) during the period. 14409 retains a beta-gamma configuration, and its leading sunspots are showing signs of shearing and ongoing flux emergence. At this time, we are implementing a Major Flare Watch with NOAA 14409. Further C-class activity is expected, with a chance of an isolated >M5 flare over the next 24–48 hours.
The position of NOAA 14409 on 4-Apr-2026 at 11:30 UT is:
N02W08 (133",139")
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 (Purple Mountain Observatory)
mmmotd@solar.physics.montana.edu