UCMEO 93001 40809
1800/
40808 61948 82236 2141/ 214// 323// 40452
40808 61918 81951 30422 13777 1112/
99999
PLAIN
SOHO/LASCO HALO CME August 8, 2024
C2 Start Time: 19:48 UT
C3 Start Time: 20:18 - 23:54 UT
Type of CME:
Symmetric HALO CME — FRONTSIDE
pa1: 214 pa2: 214
Total Width: 360 degrees
Velocity Measurements:
C2: 7 points 459.4 km/sec @ PA 214.63
C3: 4 points 439.7 km/sec @ PA 214.55
Average through both(C2/C3) fields: 452.2 km/sec
Acceleration: 6.66 m/sec^2
COMMENT: LASCO C2/C3 shows a front-sided full HALO event with a
bright
leading edge near the southwest quadrant. A faint core can be
seen propagating towards the southeast direction.
NOAA/GOES reports a CME associated with a X1.3 solar flare
from AR 13777 [S04,W22]. Moving field lines can be seen in SDO
193 @ 19:18 UT with a flare peaking @ 19:33 along with a EUV wave.
Due to gaps in data from 18:38 - 22:53 UT in STEREO/COR2 AHEAD,
preliminary time/height measurements cannot be made. Despite a loss
in data at the beginning of the CME event, STEREO/COR 2 AHEAD
shows a partial HALO with a bright leading edge in the southeast
direction.
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/2024/240808/
Best Regards,
--Taylor Lanier
BT
[Images from original message are omitted here]
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