LASCO Activity Report for
July 22, 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





2004/07/21 (Wednesday)

06:06 UT  S East	Ragged loop front with fainter extension toward S 
			followed by several ragged loop fronts (in particular,
			at 09:06 UT). GOES recorded a C8.9 X-ray flare on NOAA 
			AR 0652 (N03E24) between 05:05 - 05:33 UT with peak
			emission at 05:21 UT. EIT Fe XII running difference 
			images show a brightening on AR 0652 starting at 05:00
			UT. Material is seen to be ejected mainly toward SW. 
			Another brightening at 08:00 UT. C3 images show the 
			complex event developing toward SSE. 

10:54 UT  N East	Very faint and narrow loop front. Barely visible in C3.

13:31 UT  S East	In the trailing material of event reported to start at
			06:06 UT, a faint and slow loop front develops (brighter
			to S). By 14:30 UT, a small ragged front develops above 
			the E limb. They fade throughout C3.

20:06 UT  S Pole 	Ragged fan-like front followed at 21:30 UT by a spray
			front. They both fade throughout C3.

2004/07/22 (Thursday)

01:31 UT  S Pole	Initially bright front with fainter loop-like extensions
			above the SW Limb. Much outflow to S. By 05:30 UT, a
			ragged loop front can be discerned. C3 shows the
			development of the event as, apparently, two superposed
			ragged loop-like structures, one moving mainly toward S
			and the other slightly toward NW. GOES recorded a M9.1
			X-ray flare on NOAA AR 0652 (N03E13) between 00:14 -
			00:43 UT with peak emission at 00:32 UT. EIT Fe XII
			running difference images record a strong brightening 
			on AR 0652 starting at 00:24 UT and peaking at 00:36 UT.
			
07:31 UT  S Pole	Complex Event: Global appearance of a faint Halo CME.
			- Bright narrow feature precedes the development of an
			asymmetric loop front with faint loop-like extensions
			above the SW Limb.
			- Extremely faint and diffuse arcade-like front develops
			mainly toward NE
			- Similar one toward NW.
			C3 shows, starting at 07:42, the development of a faint 
			and diffuse wide loop front toward NNE; and starting at
			08:42 UT a wide ragged loop front developing toward SSW.
			GOES rcorded several C-class X-ray flares:
			C1.7 (N05E13) between 06:33 - 06 43 UT; Peak at 06:38 UT
                        C2.1 (N04E12) between 06:54 - 07:07 UT; Peak at 07:00 UT
                        C5.5 (N03E08) between 07:41 - 08:10 UT; Peak at 07:59 UT

08:54 UT  S West	Ragged loop front that fades throughout C2.

11:54 UT  S Pole	Diffuse loop front.


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