UCMEO 93001 40508
2100/
40508 60524 81218 0001/ 360// 223// 40496
40508 60437 80528 32211 13664 1222/
99999
PLAIN
SOHO/LASCO HALO CME May 8, 2024
C2 Start Time: 5:24 - 5:36 UT
C3 Start Time: 5:54 - 6:06 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 000 pa2: 360
Total Width: 360 degrees
Velocity Measurements:
C2: 7 points 484.4 km/sec @ PA 170.63
C3: 14 points 474.6 km/sec @ PA 170.47
Average through both(C2/C3) fields: 496.1 km/sec
Acceleration: -17.34 m/sec^2
COMMENT:
LASCO C2/C3 shows a full halo CME emerging from all directions faintly
with a bright leading edge and core in the W. The CME overlaps with a
prior CME in the SW which is associated with a flare from the same
active region 3664 with a GOES Class rating of M3.6. The halo CME is
associated with a large eruption from AR 3664. The eruption included
two flares best seen in SDO AIA 131, the prior M3.5 flare followed by
the long duration X1.0 flare which resulted in the full halo CME.
NOAA/GOES reports a X1.0 flare from S22W11 (AR 3664)
04:37/05:09/05:28 UT
STEREO Beacon Data COR2 A, preliminary time/height measurements gives
a velocity of 547.3 km/sec at a PA of 162.66. Stereo COR2-A shows a
bright full hallo CME emerging from all directions with a bright
leading edge in the 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/2024/240508
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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