Subject: SOHO/LASCO HALO CME 100207

UCMEO 93001 00208 2220/
00207 60330 81518 0901/ 089// 123// 40365
00207 60224 80236 12111 11045 1122/ 
99999

PLAIN

SOHO/LASCO C2 observed an asymmetric wide bright leading edge loop front
over the East, centered approximately at 90 degrees, with material eventually seen
at all positions on February 07, 2010.  This full Halo CME began in the C2 field at 03:30 UT. 
The event continues into the C3 field beginning at 05:18 UT and measured through the field
as the event ends and dissipates at approximately 15:18 UT to 18 Rsun.

Time/height measurements were marked and calculated to velocities of this
event averaging 365.2 Km/sec at position angle 86 degrees through C2 and C3. 

The event propagated from AR 11045 at N21E11 as seen in EIT with a rapid flare
from the region at 02:24-02:36 UT.  An EIT wave is produced and easily visible in the 
southeast and south regions but material is seen in the northeast and north on and above
the limb.

GOES shows a M6.4 xray flare at 02:20-02:39 UT claiming AR 11045.  This
flare is most probably associated with the flare and CME observed in the
EIT and LASCO fields.

LASCO and EIT images, movies and time/height information for this event is
available on the web at: 

http://umbra.nascom.nasa.gov/lasco/observations/halo/2010/100207/

Best regards,

Kevin Schenk
SOHO Mission
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA

BT