UCMEO 93001 40206 2000/
40206 60224 80742 1251/ 293// 233// 40878
40206 60215 80246 33962 13575 1212/
99999

PLAIN  


SOHO/LASCO  HALO CME February 6, 2024

C2 Start Time:  2:24 - 2:36 UT

C3 Start Time:  2:42 - 3:06 UT

Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1:  125    pa2:  293      Total Width:  168 degrees

Velocity Measurements:

C2:   3 points  870.7 km/sec @ PA 236.33
C3:  13 points 861.3 km/sec @ PA 236.41
Average through both(C2/C3) fields:  878.0 km/sec  Acceleration: 4.95 m/sec^2

COMMENT:  LASCO C2/C3 show a partial halo CME emerging from the SW with a bright leading edge and core. The halo expands towards the SW and wraps around toward the E as it propagates. The halo CME's source is a M2.2 class fllare centered on S39W62(AR 3575).
The flare was accompanied with a filament eruption seen SDO AIA 171/131/193 and is followed by post-eruptive arcades and dimming.

NOAA/GOES reports a M2.2 flare from AR 13575 02:15/02:28/02:46 UT

STEREO Beacon Data COR2 A, Preliminary time/height at 4 points of measurement gives a velocity of 921.9 km/s @PA 225.40. STEREO COR2A shows a partial halo CME emerging from the SW beginning at approximately 2:53 UT. The halo CME propagates outwards in the SW 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/2024/240206



Best Regards,

--James Tabourne

BT
[Images from original message are omitted here]

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