27th October


Solar activity was at moderate levels. A 27 degree long filament,
centered near S41W32, erupted between 26/0950 – 1310 UTC. LASCO C2
imagery observed a CME at 26/1325 UTC off the SW limb. Newly numbered
Region 1884 (S14E74, Hsx/alpha) produced an M3/Sf flare at 26/1927 UTC
and Region 1882 (S08E27, Dkc/beta-gamma-delta) produced an M1/Sf flare
(R1 Radio Blackout) at 26/1953 UTC. A CME was observed in SOHO/LASCO C2
imagery emerging from the east limb beginning at 26/1912 UTC. A
preliminary analysis suggests the ejecta is moving at about 970 km/s.

At least five other CMEs were observed in C2 imagery exiting the west
limb over the past 24 hours. Examination of SDO/AIA 304 imagery
indicates Regions 1873 (N13W83, Hrx/alpha) and 1875 (N06W56,
Ekc/beta-gamma-delta) as the origin. Where sufficient coronagraph
imagery was available, analysis suggests these events are directed
mostly westward with a slim chance of a significant impact at Earth.
Further analysis will be accomplished when additional STEREO COR2
imagery becomes available.

While Regions 1875 and 1877 (S13W35, Dhi/beta-gamma) remained the
largest spot groups on the visible disk, they only produced a few
C-class flares and changed little over the period. In addition to
Region 1884, two other regions were numbered during the period, Regions
1883 (N04E66, Hsx/alpha) and 1885 (S18E69, Hsx/alpha). Region 1885
appeared to be the origin of an eruption in the southeast visible in
SDO/AIA 304 imagery around 27/0451 UTC.

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