Halo CME Mail

Date: Tue, 11 Dec 2001 22:20:52 +0000 (GMT)

From: Kevin Schenk

Subject: Partial HALO CME 2001/12/11

  ------------------------------------------------------------------------

UCMEO 93001 11211 2200/
11211 60830 81518 3001/ 130// 113// 30348
11211 70812 80824 11458 09733 1122/
9999

BT

EIT and LASCO observed a partial HALO CME event of 2001/12/11.  This event
first seen in C2 at 08:30 UT as a front over the Northeast with roughed LE
and faint structure.  The front spanned approx pa 300-130 degrees.  Event
traveled to the C3 field begining at 09:18 and quickly deteriorating by
15:30.  The plane-of-sky speeds averaged through both cameras calculated
to 348 km/sec at PA 39 degrees.

EIT sees a bright flare in AR 9733, location [N14; E58] begining at
08:12-08:24 UT.  A faint northward traveled EIT wave is seen in the 195A
differenced images.  The event is followed by post flare loopings.  GOES
reports a X2.8 class x-ray flare of 9733 between 07:58-08:14 UT.  This
event is probably related to the CME seen in Lasco.

Images and movies are found on the LASCO ftp server at:

ftp://ares.nrl.navy.mil/pub/lasco/halo/20011211/

Best reguards,

Kevin Schenk
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA