The ARRL Solar Update

A

ARRL

Anonymous
Solar activity, which has been at low levels, has returned to
moderate levels. Region AR4232 produced the largest event of the
period, an impulsive M3.6 flare (R1-minor) on October 1, 2025.

An associated Coronal Mass Ejection (CME) was observed in subsequent
SOHO LASCO/C2 coronagraph imagery that began on September 29.
Analysis and modelling of the ejecta is ongoing.

Newly numbered Region AR4237 rema...

Continue reading...
 
Top