UCMEO 93001 30717 2140/
30714 61903 82123 0001/ 360// 113// 20700
30714 61834 91923 21612 13370 1224/
99999
PLAIN
SOHO/LASCO HALO CME July 14, 2023 FRONTSIDE
C2 Start Time: 19:03 UT
C3 Start Time: ****
Type of CME:
Symmetric HALO CME — FRONTSIDE
pa1: 000 pa2: 360 Total Width: 360 degrees
Velocity Measurements:
C2: 9 points 705.4 km/sec @ PA 213.7 Acceleration: -69.92 mk/sec^2.
C3: ***
Average through both(C2/C3) fields: ***
COMMENT: LASCO C2 shows a very faint halo CME originating in the
southern region, then expanding north into a full halo 20:06 UT. The
CME is associated with a flare centered on S16E12 (AR 13370) starting
around 18:34 UT as seen on SDO AIA 94,131.
NOAA/GOES reports a C8.8 flare from AR 3370 18:18/18:44/19:23 UT.
Due to the STEREO COR2-A flyby earth special observation program, c3
images were reduced to a cadence of once every 3 hours not allowing
accurate time/height data to be gathered.
STEREO Beacon Data COR2 A, shows the CME very faintly in the SW
direction before data gap begins at 20:38 UT. Due to gaps in
data, velocity and position measurements could not be completed at the
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/2023/230714
Best Regards,
--James Tabourne
BT
[Images from original message are omitted here]
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