UCMEO 93001 40211
2130/
40210 60336 80718 2361/ 333// 233// 31325
40210 60304 80410 21588 13584 1222/
99999
PLAIN
SOHO/LASCO HALO CME February 10, 2024
C2 Start Time: 3:36 UT
C3 Start Time: 3:30 - 4:06 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 236 pa2: 333
Total Width: 263 degrees
Velocity Measurements:
C2: 2 points 1152.4 km/sec @ PA 89.80
C3: 11 points 1322.9 km/sec @ PA 89.16
Average through both(C2/C3) fields: 1325.6 km/sec
Acceleration: 1.61 m/sec^2
COMMENT: LASCO C2/C3 show a bright partial halo CME emerging from
the E with a bright leading edge and core. The halo CME has bulk
portion towards the E as it propagates outwards. The CME wraps to the N
and S as it progresses almost becoming a full halo. The halo CME is
result of a M3.4 flare
centered around S15E88(3584), just beyond the SE limb. The flare is
faccompanied by opening field lines,EUV wave and
post-eruptive arcades seen best in SDO AIA 193/171.
NOAA/GOES reports a M3.4 flare 03:04/03:54/04:10 UT
STEREO Beacon Data COR2 A, Preliminary time/height
at 5 points of measurement gives a velocity of 1275.6 km/s @PA 95.48.
STEREO COR2A shows a halo CME emerging from the E beginning at
approximately 3:53 UT. The halo CME propagates outwards towards the E
while wrapping around to the N and S
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/2024/240210
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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