LASCO Activity Report for
February 13, 2006 SOHO Science Daily Meeting

Event times are first frame seen in C2 camera unless otherwise noted.
These are preliminary observations for the daily SOHO science discussions.
Final analysis is reported on the Lasco CME list.
An archive of these reports is available.

Points Of Interest

2006/02/10 (Friday)

	00:00 - 10:33 UT 	Data Gap.

21:54 UT  W Limb	Small blob-ioke fronts start to be discerned.

23:30 UT  S East	Bright rim just appearing above the SE Limb. 
			It develops as a bright, wide, and expanding loop 
			front that practically covers the whole southern 
			hemisphere in the C2 FOV early on 02/11. Very faint 
			and diffuse extensions can be seen in the northern
			hemisphere, already fully covering the C2 occulting 
			disk by 01:31 UT on 02/11 (the LE on S almost reached 
			the end of the C2 FOV by that time). The event is 
			first seen in C3 on 2006/02/11 at 01:42 UT all above
			the SE limb. The bulk of the CME develops mainly 
			toward SSE. Faint extensions develops toward E and W, 
			and fully surround the C3 occulting disk by 04:18 UT
 			(though by this time the diffuse extensions are barely
			above the N Pole). The mean plane-of-sky speed of the 
			LE of the event at PA ~ 162 was ~ 465 km/sec, showing
	 		practically no acceleration. GOES recorded no 
			significant X-ray activity during 02/10 and 02/11 
			(below the A level save an A3.6 X-ray flare on S19E81
 			between 22:53 - 23:08 UT with peak emission at 23:03 
			UT). Likewise EIT 195 images do not show any significant
 			event on the disk by the time prior to the LASCO C2
			event. Note that a large and bright coronal loop system
 			became visible on the east limb early on 02/11. The 
			region may have been the source of the halo event. In
 			summary, the event has been determined as an asymmetric
 			Full Halo Event, backsided. And note that the bulk of 
			the CME develops mainly toward SSE as projected on the
 			plane-of-sky.

2006/02/11 (Saturday)

	  S East	Ragged fronts all along the day (and much gusty outflow)
 			in the aftermath of Halo Event reported to start on
 			previous day.

2006/02/12 (Sunday)

	  S East	Gusty outflow continues along the day, subsiding late 
			in the afternoon.

14:06 UT  EN East	Very narrow loop-like front (jet-like) that fades
			throughout C2.

14:54 UT  N East	Diffuse jet-like front developing faster than previous
			event. It fades very close to the inner edge of C3.

2006/02/13 (Monday)

02:30 UT  E Limb	Faint, diffuse, and very elongated front. It fades
			throughout C3.

Last C2 image available by the time of writing: 08:30 UT.