From plunkett@kreutz.nascom.nasa.gov Wed May 31 19:14:07 2000
Date: Wed, 31 May 2000 16:02:32 +0000 (GMT)
From: Simon Plunkett <plunkett@kreutz.nascom.nasa.gov>

Subject: Partial halo CME on 2000/05/31

LASCO and EIT observed a partial halo CME today, 2000/05/31. The event was
first visible as a diffuse front over the N pole in C2 at 08:06 UT. It
developed to an angular extent of at least 135 degrees, from PA 340 (NW
limb) over the N pole to PA 115 (SE limb). There may be a faint extension
further along the SE limb as well. The measured speed of the leading edge
in the plane of the sky at PA 30 (NE limb) was 362 km/s.

EIT observed a filament eruption from a location near central meridian, at
about N20 E00, beginning at 06:48 UT. A bright post-eruption arcade was
observed in this location following the filament eruption.

Images and movies of this event are available at the LASCO ftp server:

ftp://ares.nrl.navy.mil/pub/lasco/halo/20000531.

Best wishes,

Simon Plunkett.

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| Simon Plunkett,              E-mail: plunkett@kreutz.nascom.nasa.gov |
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