LASCO Activity Report for
February 18, 2005 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

2005/02/17 (Thursday)

00:06 UT  WN West	Diffuse loop front surrounded by a very faint front 
	 Asymmetric 	develops as an asymmetric Full Halo CME. The C2
	    HALO	occulting disk is completely surrounded by 00:54 UT 
			(though the signatures are very faint on E). The event 
			is first seen in C3 at 00:42 UT above the W Limb. By
			02:42 UT the C3 occulting disk seems to be completely
			covered (as in C2, the halo is barely visible on E). 
			GOES reported a C4.9 X-ray flare on NOAA AR 10734
			(S03W24) on 2005/02/16 between 23:29 - 23:53 UT with 
			peak emission at 23:38 UT. The flare occurs just after
			a B4.7 X-ray-flare on NOAA AR 10735 (S10W03) also at 
			the end of previous day, between 23:03 - 23:19 UT with
		 	peak emission at 23:15 UT. EIT 195 running difference
			images show a relatively strong brightening on AR 
			at 23:36 UT. An extremely faint intensity disturbance
			can be guessed afterward developing mainly toward NW 
			of the AR. The event has therefore been determined
			as a faint asymmetric full halo CME, frontsided.
	
05:54 UT  E Limb	Extremely narrow loop-like feature developing slightly
			toward ENE. It fades throughout C2.

09:06 UT  W Limb	Faint and diffuse loop front. By 10:30 UT a small 
			blob-like front becomes discernible on SW. They fade
			throughout C3.

09:30 UT  S East	Faint and ragged loop front along streamer that fades
			thtoughout C3.

18:06 UT  W Limb	Small blob-like front developing slightly toward WSW.
			Corresponding infalling material a little bit to N.

21:54 UT  S Pole	Diffuse jet-like front accompanied on SSW by a very 
			faint and diffuse front that fades throughout C2.
		
23:30 UT  W Limb	Ragged loop front much brighter to S. It fades 
			throughout C3. 

	Note: 	Multiple B-class flares and one C2.3 X-ray flare on NOAA AR 
		10732 (around N15W90) since 20:56 UT. 

2005/02/18 (Friday)

	Note: 	Couple of C-class X-ray flares from NOAA AR 10732 since the 
		beginning of the day (around N15W90) until 01:30 UT.

04:30 UT  S Pole	Diffuse jet-like front.