Solar activity was moderate with two M-class flares during the period.
Region 2146 (N08W52, Dki/beta-delta) produced an M2/1b flare at 25/1511
UTC. A type II radio sweep (707 km/s estimated shock velocity) and a
10cm (170 sfu) radio burst were observed with this event. SOHO/LASCO C2
and C3 imagery showed a coronal mass ejection (CME), primarily off the
West limb, first visible at 24/1548 UTC and 24/1630 UTC, respectively.
Region 2146 also produced an M3 flare at 25/2021 UTC. A CME was
subsequently observed in SOHO/LASCO C2 imagery emerging from the west
limb at 25/2048 UTC. Analysis suggested the ejecta was moving at
approximately 784 km/s. WSA-Enlil model output indicated both this CME
and the one preceding it would miss Earth.
Region 2146 grew, while maintaining its north-south spot orientation,
and developing a delta configuration in its southern spots. The
remaining regions all showed signs of decay.