UCMEO 93001 70907 1550/
70906 61224 81630 2271/ 226// 333// 41429
70906 61154 81406 33409 12673 1112/
99999

PLAIN


SOHO/LASCO  HALO CME September 06, 2017  

C2 Start Time:  	12:24 UT

C3 Start Time:		12:30 - 16:30 UT  

Type of CME:
Asymmetric HALO CME — FRONTSIDE
pa1:  227      pa2:  226       Total Width:  360 degrees

Velocity Measurements:

C2	3 points	 1286.1 km/sec @ PA 227
C3	7 points	 1474.7 km/sec @ PA 227  
Average through both fields: 	 1428.9 km/sec  Acceleration:   

COMMENT:   	AIA 193 shows an impulsive flare of AR 12673 at location [S09, W134] 
			11:54-14:06 UT.  The event produces an EUV wave and a dimming \
			across the disk, followed by a post loop arcade.
			
			LASCO shows increased proton flux in the field of view (SEP).

			STEREO Beacon Data
			COR2 A, 12:24 - 14:24 UT; shows an asymmetric HALO CME
			Preliminary time/height measure gives 1382.1 km/sec @ 236 degrees.
						
NOAA/GOES reports a X9.3 class X-ray flare of AR12673 11:53/12:02/12:10 UT.
NOAA/GOES shows a increases in proton particles with and increase in flux >100 MeV.
			The flux > 10 MeV increases and remains in solar storm conditions.			
			
Preliminary UCMEO velocity and position measurements will be delivered first. 
Images, movies, and time/height information for this event will be available at: 

http://umbra.nascom.nasa.gov/lasco/observations/halo/2017/170906/

Best Regards,

--Kevin Schenk

BT