UCMEO 93001 20311 1750/
20310 61900 80154 0001/ 360// 333// 40621
20310 61636 82018 41225 12962 1212/
99999

PLAIN


SOHO/LASCO  HALO CME March 10, 2022  

C2 Start Time:  	19:00 UT

C3 Start Time:		20:06 - 01:54 UT   

Type of CME:
Asymmetric HALO CME  FRONTSIDE
pa1:  000      pa2:  360       Total Width:  360 degrees

Velocity Measurements:

C2	5 points	 545.8 km/sec @ PA 340
C3	10 points	 667.0 km/sec @ PA 340  
Average through both fields: 	 621.1 km/sec  Acceleration: 17.48 m/sec^2.   

COMMENT:   	AIA 304 shows a long duration duel ribbon flare (C2.8) of 
			AR 12962 at location [N25, W12] 17:39 - 20:18 UT.  
			A dimming of the region is seen to the West and 
			South followed by a post loop arcade. 
			
			
			STEREO Beacon Data 
			COR2 A, shows a bright loop CME over the West 19:23 - 23:23 UT.
			Preliminary time/height measure gives 506.3 km/sec @ 298 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/2022/220310/


Best Regards,

--Kevin Schenk

BT

[Images from the original alert message are omitted here]