18th December

Solar activity was at moderate levels during the period. Region 2241
(S10E11, Ekc/beta-gamma-delta) produced the largest flare of the period,
an M1/1n flare at 17/1901 UTC, as well as a couple of high level C-class
flares. This region continued to show growth and maintained its delta
magnetic configuration across an east-west polarity inversion line
during the period. Region 2242 (S18W09, Ekc/beta-gamma-delta) remained
one of the most active regions, also producing multiple C-class events,
the largest being a C7/Sf event at 17/2126 UTC. It too, continued to
exhibit growth in its overall areal coverage and maintained its delta
magnetic configuration. The remaining regions on the visible disk
remained stable and mostly inactive. No Earth directed coronal mass
ejections (CMEs) were observed during the period.

Solar activity is expected to be at moderate (R1-R2/Minor-Moderate)
levels for the next three days (18-20 Dec) as Regions 2241 and 2242
continue to grow in areal coverage as well as maintain complex magnetic
structures. There is also a chance for an isolated X-class event
(R3-Strong) during the forecast period.

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