LASCO Activity Report for
July 14, 2004 SOHO Science Daily Meeting

Planner: K. Schenk, G. Stenborg

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

SATURN is still in the C3 FOV (Western hemisphere) after reappearing from
behind the C3 occultor on 2004/07/10 (Saturday) at ~ 05:42 UT.


2004/07/13 (Tuesday)

00:54 UT  N West	Ragged loop front brighter to S and with faint 
	(Faint Halo)	extensions also to S. By 01:31 UT the extensions cover
			the C2 occultor. By 01:31 UT on NNW, bright and slower
			material appears developing toward NNW followed by an
			apparently twisted (rather circular) structure. The
			circular structure seems to surpass later, while still 
			in C2, the bright material. By 05:30 UT more bright
			material appears above the NNW limb. GOES recorded 
			high X-ray activity during the day. In particular, 
			NOAA AR 0646 (by the time at N14W45), produced an M6.7
			X-ray flare between 00:09 and 00:23 UT with peak 
			emission at 00:17 UT, most likely associated to the
			event. EIT Fe XII shows a brightening above the
			aforementioned AR starting at 00:12 UT followed by a 
			wave apparently centered in the AR. Material is seen
			ejected form nearby the AR toward N short after the
			flare. This event has therefore been determined as,
			at least most likely, partly Earth-directed. 

01:54 UT  N East	Ragged loop front preceded by a fainter and more 
			diffuse front at 01:31 UT. Difficult to characterize 
			the event as it mixes with the faint extensions from
			previous event.

06:06 UT  WS West	Faint ragged fan-like front that fades throughout C3.

09:08 UT  WN West	Another bright ragged loop front with faint extensions 
	(Faint Halo)	to S. By 10:06 UT the faint extensions seem to cover
			the C2 occultor. GOES recorded an M5.9 X-ray flare 
			on NOAA AR 0646 (by the time at N14W51), between 08:39
			and 09:15 UT with peak emission at 08:48 UT. EIT Fe XII
			shows a brightening above the aforementioned AR starting
			at 08:48 UT followed by an intensity disturbance 
			travelling mainly toward NW. This event has therefore
			been determined as, at least most likely, partly
			Earth-directed. 

14:06 UT  WN West	Structured material slowly develops, superposed in the
			LOS with the trailing material of previous event. While
			in C2 it is surpassed by the event reported to start
			at 20:30 UT. 

14:30 UT  N East	Ragged loop front. Continuous outflow.

17:54 UT  NN East	Very faint diffuse front that seems to push structures
			already in the C2 FOV. Effect visible in C3.

20:30 UT  WN West	Ragged loop front with apparently twisted inner 
			structure preceded by a fainter and diffuse front
			(shock?) that is first seen at 19:54 UT. GOES recorded
			an M6.2 X-Ray flare produced by NOAA AR 0646 (N14W56)
			between 19:24 - 19:36 UT with peak emission at 19:32 UT
			(among several others C-class X-ray flares from the 
			same region all along the day).

2004/07/14 (Wednesday)

03:30 UT  N East	Kind of thick jet-like front followed by a diffuse
			and asymmetric ragged loop front whose northern leg
			matches the apparent PA of the jet. They quickly fade.
	
05:06 UT  N East	Initially bright front develops as a ragged faint
			structure with faint extensions to S.
			
06:30 UT  W Limb	Apparently twisted elongated structure, preceded by a
			kind of spray to N.


Web curator: K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771