LASCO Activity Report for
August 16, 2001 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

Kreutz comet SOHO-344 (disc. S. Hoenig) observed 2001/8/15, so
far only in C3 data. Last observed 2001/8/15 at 11:42 UT, at
9.6 Rs, PA 243

Proton fluxes still high in both coronagraphs following the 
halo CME and proton storm late on 2001/8/15.

2001/08/15

01:54 UT  N West	Narrow bright front from same/nearby region as
			previous event. Further loops/fronts follow
			at 05:30, 10:30 

02:30 UT  N East	Bright loop front with cavity and core, 
			arcades follow, fairly prolonged

06:30 UT  S Pole	Faint spray followed by narrow bright front

23:30 UT  HALO		Faint front first discernible in S West, is
			a thick wide fast bright front filling SW
			quadrant by 23:54 and a FULL HALO CME by 00:06,
			although initially fairly faint onver N Pole.
			First protons detected 00:31 reaching 'storm
			levels' by 01:31. Data still degraded in both
			coronagraphs at time of writing. No EIT or 
			GOES X-ray signature. ~1050 km/s at PA 210 (SW), 
			with rapid deceleration, though data spare since
			most C3 images presently unavailable. Prolonged
			gusty outflow in W and SW. AR 9557b would presently
			be almost at central meridian on the far side
 
	C2 Running Difference movie
	C3 Running Difference movie

2001/08/16

	02:06 - 04:32 UT	Temporary data gap

10:32 UT  W Limb	Fairly fast ragged asymmetric front with cavity,
			possibly residual to earlier halo event