LASCO Activity Report for
April 21, 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

2006/04/20 (Thursday)

06:54 UT  S West	System of faint loop fronts. It fades throughout C3.

14:54 UT  W Limb	Extremely faint (and apparently) blob-like front starts
			to be guessed above the W Limb, developing very slowly.
			Then, by 18:30 UT a faint feature (X-shaped) starts
			to develop on WSW (first signatures in C3 at 22:18 UT).
			A kind of very diffuse flow seems to be superposed
			in the LOS, apparently developing faster. GOES recorded
			a couple of B-class events (B1.6 and B2.2) on NOAA AR
			10871 (S05W90) that peaked at 17:31 and 19:04 UT,
			respectively.
			
23:30 UT  N West	Bright and long jet-like front.

2006/04/21 (Friday)

01:31 UT  W Limb	Reconnection event very close to the limb. The feature
			coming out is first seen in C3 at 02:42 UT, as little 
			bit to N to the event described in entre at 22:30 UT on
			previous day. GOES recorded a B4.5 X-ray flare on
			NOAA AR 10871 (S05W90) between 00:41 - 00:58 UT with
			peak emission at 00:49 UT.

01:54 UT  ES East	Faint and diffuse loop-like front preceding the 
			development of a system of diffuse and expanding loop
			fronts. Some extremely faint extension can be since 
			since late on previous day expanding toward the S Pole.
 			The system partly superposes in the LOS with a brighter 
			(though slower and elongated) system on E that develops
			slightly toward ESE.

03:30 UT  EN East	Ragged blob-like front.

07:31 UT  N West	Very thin fan-like front that fades throughout C2.

Last C2 image available by the time of writing: 11:54 UT