LASCO Activity Report for
August 18, 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

2004/08/17 (Tuesday)

	  WN West	Gusty outflow and small ragged fronts continue.

	  WS West	Gusty outflow continues. Some raged fronts along
			the day.
	
06:06 UT  S East	Bright loop front (1) with cavity and twisted inner 
			core (2). A Very faint front (3) develops above the NE
			and N limbs, starting at ~ 08:06 UT. By 11:06 UT a
			relatively bright narrow front (4) becomes discernible 
			in the trailing material (SE) developing as an apparent
			circular and twisted structure. Gusty outflow follows.
			EIT Fe XII images show the eruption of a transequatorial
			filament (2) connecting NOOA AR 10661 with region at
			around S10E20, between 03:48 - 06:12 UT. The ejection
			develops toward	SE. By 05:48 UT the filament is already
			shown in emission. A big loop front (arcade) (1) can be
			seen accompanying the development of the filament ahead
			of it. Between 05:48 - 07:13 UT ejecta from NOAA AR
			10661, most likely related to (3). GOES recorded a C1.8
			X-ray flare from NOAA AR 10661 (N05E23) between 10:44 -
			10:50 UT with peak emission at 10:47 UT. Timing makes
			the X-ray event likely associated to (4).	

09:30 UT  WS West	Small ragged front becomes discernible in the gusty
			outflow. Another one at ~ 14:30 UT, a little bit to S.
			They both fade throughout C3.

18:55 UT  N East	Faint elongated and narrow front that quickly fades.

20:06 UT  W Limb	Ragged front becomes discernible, developing slightly
			toward WNW. It fades througout C3. 

20:06 UT  S East	Faint elongated and narrow front.

2004/08/18 (Wednesday)

04:30 UT  WN West	Ragged and not well defined front that seems to quickly
			fade.

	08:30 - 12:30 UT	Temporary DSN Data Gap.