UCMEO 93001 40510 0100/
40508 62224 80442 0001/ 360// 312// 40785
40508 62204 82330 32321 13664 1222/
99999
PLAIN
SOHO/LASCO HALO CME May 8, 2024
C2 Start Time: 22:24 UT
C3 Start Time: 22:30 -23:10 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 000 pa2: 360
Total Width: 360 degrees
Velocity Measurements:
C2: 3 points 742.6 km/sec @ PA 273.13
C3: 9 points 783.5 km/sec @ PA 273.38
Average through both(C2/C3) fields: 785.5 km/sec
Acceleration: -5.37 m/sec^2
COMMENT:
LASCO C2/C3 show a halo CME emerging from all directions with faint
leading edges with core and cavity seen in the SW. The halo cme
is associated with two flares centered on S23W21(AR 3664) with GOES
Class ratings M9.9 and M9.7 respectively. The flares are accompanied by
a wide EUV wave and wide opening lines seen best in SDO AIA 171.
NOAA/GOES reports a M9.9 flare from S23E21(AR 3664) 22:04/22:27/23:30 UT
NOAA/GOES reports a M9.7 flare from S23E21(AR 3664) 22:05/22:27/22:45 UT
STEREO Beacon Data COR2 A, due to gaps in data from 05/08/2024 20:53 UT
- 05/09/2024 01:53 UT the halo CME could not 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/2024/240508_c
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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