SOHO/LASCO Halo CME 20230710

Halo Alert: halo-message.20230713

UCMEO 93001 30713 1830/
30713 60624 80936 0002/ 360// 713// 30510
30713 ///// ///// ///// ///// /////
99999

PLAIN

SOHO/LASCO HALO CME July 13, 2023 FARSIDE

C2 Start Time:      6:24 UT

C3 Start Time:      7:54 UT

Type of CME:
Symmetric HALO CME — FARSIDE
pa1: 000      pa2: 360       Total Width: 360 degrees

Velocity Measurements:

C2:    8 points     467.7 km/sec @ PA 255.60
C3:    11 points   506.9 km/sec @ PA 255.45
Average through both(C2/C3) fields: 510.4 km/sec Acceleration: 3.57 m/sec^2.

COMMENT: LASCO C2/C3 show a relatively slow moving faint full halo CME. Due to the CME being a farsided event, SDO/AIA could not identify exact cause of eruption.

STEREO Beacon Data
COR2 A, shows a faint slow moving halo CME originating directly west .
Preliminary time/height measurements gives 512.9 km/sec @ 219.45 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/2023/230713

Best Regards,

--James Tabourne

BT
[Images from original message are omitted here]

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