UCMEO 93001 40323
1600/
40323 60125 80718 0001/ 360// 232// 41491
40323 60058 80152 12507 13614 1112/
99999
PLAIN
SOHO/LASCO HALO CME March 23, 2024
C2 Start Time: 00:48 - 01:25 UT
C3 Start Time: 01:42 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 000 pa2: 360
Total Width: 360 degrees
Velocity Measurements:
C2: 2 points 1540.5 km/sec @ PA 16.70
C3: 10 points 1466.2 km/sec @ PA 16.68
Average through both(C2/C3) fields: 1491.9 km/sec
Acceleration: -61.78 m/sec^2
COMMENT:
LASCO C2/C3 show a halo CME emerging from the N , with a bright leading
edge and core. The CME propagates outwards relatively quickly in all
directions before overlapping with a fainter halo CME emerging from the
SW, which begins at 2:18 UT. The CME is associated with a X1.1
class flare centered on N25E07(AR 3614). The flare is accompaanied by a
large EUV wave, dimming and post-eruptive arcades seen best in AIA 193.
NOAA/GOES reports a X1.1 flare from S14E15(AR 3615 + 3614)
00:58/01:33/01:52 UT
STEREO Beacon Data COR2 A, due to gaps in data from 03/22/2024 18:23 UT
- 03/23/2024 03:23 UT only the end of the halo CME could be
captured .Preliminary time/height measurements could not be performed
at this time .
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/2024/240323
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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