25th October


Solar activity was high. Region 1882 (S08E67, Dso/beta) produced an
impulsive X1 flare (R3 Strong Radio Blackout), with no corresponding
optical report, at 25/0801 UTC. It was accompanied by Type II (1240
km/s) and IV radio emissions and a Tenflare (610 sfu). SOHO/LASCO C2
coronagraph imagery depicts a coronal mass ejection (CME) emerging from
the east limb beginning at 25/0824 UTC.

Earlier, this same region produced an M2 x-ray flare (R1 Minor Radio
Blackout) at 25/0302 UTC as well as Type II (711 km/s) and Type IV radio
emissions. A relatively narrow CME, believed to be associated with this
flare, was observed in SOHO/LASCO C2 coronagraph imagery emerging from
the east limb at 25/0424 UTC. Later, Region 1882 produced an M1/Sf
flare at 25/1012 UTC.

A 25 degree filament eruption in the northeast which occurred between
25/0004-0258 UTC produced a CME visible in SOHO/LASCO C2 imagery
beginning 25/0436 UTC. None of these CMEs are expected to be
geoeffective. Another filament liftoff from the southeast quadrant was
observed in SDO AIA 304 imagery 25/0600-1000 UTC.

Regions 1875 (N08W30, Ekc/beta-gamma-delta) and 1877 (S12W10, Dhi/beta)
remained the largest regions during the past 24 hours. Region 1875
ended Oct 24th with an area of 720 millionths and by the time of this
report had four C-class events to its credit. Region 1877 ended the 24th
at 440 millionths and was responsible for three C-class events so far,
including a C5 at 24/2210 UTC.

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