LASCO Activity Report for
November 01, 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

2004/10/29 (Friday)

04:54 UT  N West	Faint and diffuse ragged front.

09:54 UT  N West	Very thin and elongated front followed at 13:32 UT by
			a faint and veru diffuse elongated front. They fade
			throughout C2.	 

11:30 UT  ES East	'Explosive' ragged loop front. Some infalling material.
			GOES reported a C1.1 X-ray flare from NOAA AR 10693 
			(S14E53) between 10:51 - 10:57 UT with peak emission 
			at 10:55 UT.

2004/10/30 (Saturday)

00:06 UT  ES East	Ragged loop front preceded by a faint expanding loop
			front. It fades throughout C3.	 

	02:30 - 05:30 UT	Temporary Data Gap. 

05:30 UT  WN West	Faint and big ragged front already under development
			after data gap. Later:
		      *	by 06:54 UT on W, a bright and wide ragged loop front,
		      *	by 07:31 UT, faint circular extensions are discernible 
			all above the E - SE - S Limb. The extensions are not 
			discernible in C3. 
		      *	at 09:30 UT, a big expanding loop front follows right 
			above the W Limb,
		      * at 12:06 UT, a bright loop front developing mainly
			toward WSW follows.Circular extensions on NW and all
			above the E - SE - E Limb are discerned. The extensions
			are not visible in C3,
		      * at 15:06 UT, a relatively small ragged loop front on W,
	       (HALO) * at 16:54 UT, another bright ragged loop front developing
			slightly toward WSW. By 17:30 UT, faint circular 
			extensions are discernible above the E - SE - E Limb, 
			and also on NW.	An even fainter and diffuse front seems 
			to develop also on NE. By 18:18 UT, the event looks
			like a very asymmetric 'full' halo CME in C3,
		      * at 18:06 UT, a relatively small and asymmetric loop 
			front follows,
		      * and by 20:30 UT, a diffuse and asymmetric loop front
			develops slightly toward WNW.	  
			On the other hand, GOES reported lot of X-ray activity 
			on NOAA AR 0691 since late on previous day. In 
			particular, on 2004/10/30:
		      - a C9.7 X-ray flare (N14W19) between 00:39 - 00:53 with
			peak emission at 00:49 UT,
		      - a M3.3 X-ray flare (N13W20) between 03:23 - 03:37 with
			peak emission at 03:33 UT,
		      - a M4.2 X-ray flare (N13W22) between 06:08 - 06:22 with
			peak emission at 06:18 UT,
		      - a C5.5 X-ray flare (N16W22) between 06:55 - 07:05 with
			peak emission at 07:01 UT,
		      - a M3.7 X-ray flare (N14W24) between 09:09 - 09:30 with
			peak emission at 09:28 UT,
		      - a C7.2 X-ray flare (N13W25) between 10:20 - 10:41 with
			peak emission at 10:35 UT,
		      - a C1.0 X-ray flare (N12W26) between 11:17 - 11:27 with
			peak emission at 11:22 UT,	
		      - a X1.2 X-ray flare (N13W25) between 11:38 - 11:50 with
			peak emission at 11:46 UT,	 
		      - a C2.6 X-ray flare (N12W27) between 13:59 - 14:10 with
			peak emission at 14:06 UT,	
		      - a M5.9 X-ray flare (N13W28) between 16:18 - 16:37 with
			peak emission at 16:33 UT (this is the one most likely
			associated to the HALO CME at 16:54 UT).
			Please also note that there was a C3.7 X-ray flare
			from NOAA AR 0687 (N13W59) between 12:45 - 13:03 UT
			with peak emission at 12:51 UT.	  
         
19:54 UT  ES East	Elongated loop front.	
	

2004/10/31 (Sunday)

01:31 UT  W Limb	Ragged loop front.

01:54 UT  N West	Asymmetric and diffuse expanding loop front.

03:30 UT  ES East	Spray-like front that fades close to the inner edge of 
			C3.

03:30 UT  N East	Elongated and diffuse loop front that feades throughout 
			C2.	   

06:30 UT  WS West	Ragged loop front followed by gusty outflow. GOES
			reported an M2.3 X-ray flare from NOAA AR 0691 (N12W36)
			between 05:23 - 05:39 UT with peak emission at 05:32 UT.
			Extremely faint extensions seem to surround the C2 
			occulter during the development of the event. However,
			no extensions can be seen in C3.	

12:06 UT  N West	Faint elongated loop front.

18:30 UT  ES East	Elongated expanding loop front preceded by a diffuse
			and also elongated loop front from which is difficult
			to give an exact time of first appearance.	  

20:30 UT  W Limb	Elongated and ragged loop front. It fades throughout C3.

22:30 UT  W Limb	Big ragged loop front and gusty outflow. GOES reported 
			a C7.0 X-ray flare from NOAA AR 0691 (N11W45) between 
			21:08 - 021:38 UT with peak emission at 21:27 UT.    
 

2004/11/01 (Monday)

00:54 UT  W Limb	Ragged loop front. GOES reported a B7.8 X-ray flare 
			(N13W48) between 00:34 - 00:40 with peak emission at 
			00:38 UT.
 
03:54 UT  W Limb	Bright ragged loop front. Faint extensions ahead to N.
			An extremely faint circula halo seems to develop in
			C2 starting at 04:54 UT, which is not discernible in C3.
  			On the other hand, GOES continues reporting lot of 
			X-ray activity on NOAA AR 0691. In particular, an M1.1 
			X-ray flare (N12W49) between 03:04 - 03:26 with
			peak emission at 03:22 UT. EIT 195 images show a strong
			brightening on NOAA AR 0691 at ~ 03:24 UT followed by
			an intensity disturbance toward W and S.

06:06 UT  W Limb	Big and very wide loop front and trailing material. 
			Proton storm starting at ~06:30 (C2 time). The event is
			very fast, and it is first seen in C3 above the W Limb
			at 06:42 UT. By 08:18 UT seems to have completely 
			surpassed the CME reported to start at 03:54 UT. EIT 
			195 images show a big CME coming from behind the W Limb,
			starting at 05:48 UT.