Solar activity reached high levels during the period as Region 2242
(S18W36, Ekc/beta-gamma-delta) produced an X1/3b flare at 20/0028 UTC.
Associated with this event was a Type II radio sweep (900 km/s), 2300
sfu Tenflare, and a coronal mass ejection (CME) directed off the SW
limb. We are currently waiting on further SOHO/LASCO coronagraph
imagery to determine if there is an Earth-directed component to the CME.
Penumbral area within the intermediate area of Region 2242 appeared to
be separating which separated the delta regions within the group.
Region 2241 (S10W13, Ekc/beta-gamma-delta) was relatively stable and
quiet over the period, however it retains a transverse delta within its
trailing spots. Flux emergence and growth was observed in new Region
2244 (S05E45, Cao/beta). The rest of the spotted regions were either
stable or in decay.
Solar activity is expected to be at moderate (R1-R2/Minor-Moderate)
levels with a chance for further X-class flaring (R3-Strong or greater)
for the next three days (20-22 Dec) as Regions 2241 and 2242 remain
large and magnetically complex.