UCMEO 93001 30731 1630/
30728 61612 81824 2001/ 359// 233// 41860
30728 61539 81616 42787 13376 2223/
99999
PLAIN
SOHO/LASCO HALO CME July 28, 2023
C2 Start Time: 16:12 UT
C3 Start Time: 16:54 UT
Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1: 200 pa2: 359
Total Width: 159 degrees
Velocity Measurements:
C2 1 points
C3 9 points 1860.2 km/sec @ PA 291
Average through both fields:
COMMENT: LASCO C2/C3 show a fast moving partial-halo CME emerging
from the NW with a bright core then propagating westward with a faint
leading edge. SDO AIA 171, 193 show a bright eruption of filamentary
material centered at location N27W87 starting around 15:46 in AIA 171.
LASCO shows extreme proton flux in the field of view. (SEP)
NOAA/GOES reports a M4.1 flare from AR 3376 15:39/15:58/16:16 UT
STEREO Beacon Data
COR2 A, shows a bright core CME over the West 15:53 - 18:53 UT.
Preliminary time/height measure gives 2188.5 km/sec @ 312 degrees.
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/2023/230728
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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