LASCO Activity Report for
July 28, 2004 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

2004/07/27 (Tuesday)

00:30 UT  N West	Expanding loop front (brighter to N) pushing loop
			structures ahead of it. Rather faint in C3. GOES 
			recorded a M1.4 X-ray flare from NOAA AR 0652 (N11W52)
			between 23:47 (on 7/26) - 00:20 UT with peak emission 
			at 00:00 UT.

03:54 UT  S West	Faint couple of faint loop fronts.

06:06 UT  S West	Bright ragged loop front (brighter to S), faint 
			extensions to N. Apparently twisted trailing material.
			GOES recorded a M1.3 X-ray flare from NOAA AR 0652
			(N04W54) between 05:41 - 05:52 UT with peak emission 
			at 05:45 UT.

11:54 UT  N East	Slowly expanding system of loops (and diffuse front
			superposed in the LOS) develops, slightly towards NNE.
			Another loop front can be discerned by 18:30 UT. 

14:06 UT  S West	Couple of ragged loop fronts.

15:54 UT  S West	Another bright ragged loop front (brighter to S), faint 
			extensions to N. Apparently twisted trailing material.
			Similar to that at 06:06 UT. By the time, GOES recorded
			from NOAA AR 0652 a:
			- C3.0 X-ray flare (N04W58) between 15:01 - 15:11 UT with
			  peak emission at 15:07 UT.
			- C2.8 X-ray flare (N03W58) between 15:21 - 15:36 UT with
			  peak emission at 15:25 UT.
			Small ragged loop front follos at ~17:30 UT on WSW.

15:54 UT  N East	Ragged elongated looop front at PA that apparently
			matches that of the southern leg of event reported to
			start at 11:54 UT, developing slightly toward ENE.

20:06 UT  W Limb	Just a small loop front followed at ~ 20:58 UT by a 
			very diffuse brightening above the W limb, both quickly
			fading. GOES recorded a M1.5 X-ray flare from NOAA AR
			0652 (N10W64) between 19:59 - 20:37 UT with peak 
			emission at 20:20 UT.

23:30 UT  S West	Another bright ragged loop front (brighter to S; 
			narrower than previous events), faint extensions to N.
			Apparently twisted trailing material. By the time, GOES
			recorded from NOAA AR 0652 a:
			- C2.9 X-ray flare (N04W63) between 22:27 - 22:36 UT with
			  peak emission at 22:33 UT.
			- C1.1 X-ray flare (N02W64) between 22:52 - 23:02 UT with
			  peak emission at 22:57 UT.

2004/07/28 (Wednesday)

00:06 UT  N West	In the trail of event reported to start at 11:54 UT on 
			previos day, a faint loop front (moving apparently
			faster) develops. Gusty outflow.

02:54 UT  W Limb	Wide event. A diffuse loop front appears above the W
			Limb becoming vert bright by 03:30 UT. A cavity and
			bright inner core follow. By 06:54 UT a ragged and 
			elongated loop front follows, at the PA of the southern
			leg of the wide loop front. During the development in
			C2. very faint material above the SE limb is seen to be
			pushed aside. In C3, faint expanding extensions are
			seen above the N Pole and on SE. 
 			GOES recorded a long duration X-ray (C6.3) event between 
			02:56 - 08:24 UT with peak emission at 08:11 UT, with a 
			spike during the rising phase: a C2.0 X-ray flare
			(at N09W67) between 02:57 - 03:07 UT with peak 
			emission at 03:03 UT.