UCMEO 93001 30710 1600/
30710 61200 81524 1251/ 358// 233// 40566
30710 61143 81247 31254 13358 2222/
99999

PLAIN


SOHO/LASCO  HALO CME July 10, 2023 FRONTSIDE

C2 Start Time:      12:00 UT

C3 Start Time:      12:30 UT  

Type of CME:
Assymmetric Partial HALO CME — FRONTSIDE
pa1: 125      pa2:  358       Total Width:  233 degrees

Velocity Measurements:

C2:    4 points     781.9 km/sec @ PA 250.68
C3:    22 points   543.5 km/sec @ PA 250.60
Average through both(C2/C3) fields:      566.8 km/sec  Acceleration: -9.78 m/sec^2.  

COMMENT: LASCO C2/C3 show a bright partial-halo CME in the W region. The flare is associated with filament eruption starting at approximately 11:40 UT, most visibly seen in GOES SUVI 304. The flare was centered at S12W54 (AR 3358) with a GOES Class of C2.5.
 
 STEREO Beacon Data
 COR2 A, shows a bright loop CME over the West 12:23 - 15:53 UT.
 Preliminary time/height measure gives 735.3 km/sec @ 280 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/2023/230710_B

Best Regards,

--James Tabourne



[Images from original message are omitted here]

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