LASCO Activity Report for
August 16, 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

2006/08/15 (Tuesday)

13:31 UT  W Limb	Faint ragged front starts to be discernible. It fades
			throughout C3 (relatively close to the inner edge).

19:31 UT  W Limb	Another faint ragged front that also fades throughout
			C3.

2006/08/16 (Wednesday)

07:31 UT  W Limb	Ragged and diffuse front preceding the development
			toward SW of a system of wide and expanding loop 
			fronts. The outermost front seems to fully cover the C2
			occulting disk by 09:08 UT. The signal on the eastern
 			hemisphere is extremely faint and just above the limb,
			while on W it is already past the outer edge of the C2
 			FOV. The event is first seen in C3 at 08:18 UT 
			appearing above the SW limb as a diffuse loop front.
			The brighter system of loops shows up at 10:19 UT. By
			that time the outer front fully surround the C3
 			occulting disk (signal on the western hemisphere just
			above the limb). GOES reported a couple of impulsive
 			B-class X-ray flares on NOAA AR 10904 on top of B-class
			X-ray activity: i) a B2.1 (at S11W09) between 04:54 -
 			05:00 UT with peak at 04:57 UT, and ii) a B3.4 (at 
			S13W16) between 08:12 - 08:19 UT with peak at 08:15 UT.
 			EIT 195 images show the formation of a dimming region 
			to N of AR 10904 starting at 07:13 UT. The event has
 			therefore been determined as an asymmetric full halo
 			event, most probably frontsided, based on the spatial
 			and temporal correlation with the activity observed 
			on and around AR 10904.

Last C2 image available by the time of writing:  12:06 UT