UCMEO 93001 40202
2130/
40201 60748 81242 0001/ 360// 113// 30597
40201 60722 80900 12005 ///// 1212/
99999
PLAIN
SOHO/LASCO HALO CME February 1, 2024
C2 Start Time: 7:48 UT
C3 Start Time: 8:30 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 48 pa2: 163
Total Width: 245 degrees
Velocity Measurements:
C2: 6 points 641.7 km/sec @ PA 15.60
C3: 14 points 587.0 km/sec @ PA 15.55
Average through both(C2/C3) fields: 597.3 km/sec
Acceleration: -10.46 m/sec^2
COMMENT: LASCO C2/C3 show a faint full halo CME emerging from the
NE with a bright lesding edge. Faint lines are seen in C2 propagating
outwards in all directions. The halo CME is result of a C3.0 flare
centered around N20E05. The flare is followed by dimming and
post-eruptive arcades seen best in SDO AIA 193. Due to an eclispe in
SDO from 02-01 16:2 UT - 7:51 UT the eruption is partially obscured.
NOAA/GOES reports a C3.0 flare 07:22/07:43/09:00 UT
STEREO Beacon Data COR2 A, Preliminary time/height
at 9 points of measurement gives a velocity of 620.6 km/s @PA 23.77.
STEREO COR2A shows a halo CME emerging from the NE beginning at
approximately 7:53 UT. The halo CME propagates outwards in our
directions, though not seen as clearly as C2.
Preliminary UCMEO velocity and position measurements are delivered
first.
Images, movies, and time/height information for this event will be
available at:
https://umbra.nascom.nasa.gov/lasco/observations/halo/2024/240129
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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