Subject: SOHO/LASCO Partial HALO CME 131013

UCMEO 93001 31015 1300/
31013 60125 81018 0471/ 240// 30579
31013 60024 80142 21722 11865 1112/
99999

PLAIN

SOHO/LASCO observed a Partial HALO CME on October 13, 2013.  Event is first seen in
C2 at 01:25 UT as a multi-loop over the South. The front expands with extensions
PA 047-240 degrees for total coverage of 193 degrees in width. The event continues
into the C3 field beginning 02:06 to 10:318 UT leaving the C3 field of view at
30Rsun in the South. Temporary data gap in C3 04:54-09:30 UT. 

Time/height measurements were marked to 5 points in C2 with speeds of 617.4 Km/sec
at position angle 147 degrees. The event is marked to 8 points in C3.  Speeds average
through both fields to 579.3 Km/sec at PA 147 degrees.  Acceleration 6.99 m/sec^s.


SDO/AIA 193 shows a flare of active region 11865 located [S22, E17] 00:24-01:42 UT.
The flare produces a dimming and a wave propagating over the lower South/Southeast
region on disk.

STEREO: BEACON Data
COR2 B, 01:25-05:40 UT expanding loops over the South and West hemisphere.
Preliminary time/height measure gives 504.7 km/sec velocity at LE. 
EUVI B, 00:36-00:56 UT CME over the Southwest limb.
COR2 A, 10/12 22:39-04:24 UT data gap. Faint CME in progress over the South.
EUVI A, 10/12 22:45-05:15 UT data gap.  n/a. 

NOAA/GOES reports a M1.7 Xray flare of AR11865 00:12/00:43/01:05 UT. 
   
The observation of this event is considered 'FAIR'. This CME is determined a FRONTSIDED event.

Images and movies and time/height information for this event is available on the web at:

http://umbra.nascom.nasa.gov/lasco/observations/halo/2013/131013/

Best regards,

Kevin Schenk
Solar Heliospheric Observatory
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA

BT