LASCO and EIT observed a full halo CME on 2001/11/17. The
event was first observed in C2 at 05:30 UT as a fast, bright
loop front over the E limb; by 05:54 UT the C2 occulting disk
was surrounded, though emission in the W was faint. The
front first appeared in C3 at 05:42 UT with full coverage
of the C3 occultor by 06:42 UT. The plane of sky speed of
the front was measured as 1173 km/s at PA 59 (NE) with some
deceleration through the coronagraphs' fields of view.

The CME was most probably associated with an eruptive filament
that was soon followed by an M2.8 X-ray flare. The filament
was observed lifting off by EIT between 03:24 - 05:36 UT, and
the flare was observed between 05:24 - 06:24 UT with peak emission
at 05:35. Note that EIT's cadence was rather uneven during this
period, and in particular the start time for the flare may not
be reliable. GOES observed the flare between 04:49 - 06:11 UT
with peak emission at 05:25. SEC records the flare from AR9704,
centered on S13E42. Note also that the region from which the
filament appeared to originate is somewhat to the N and E of
this, centered around S04E47. Neither an EIT wave nor a dimming
were observed in association with this event.

LASCO observd a full halo CME late on 2001/11/18.
A bright front was first seen in the SE in C2 at
21:30 UT and in C3 at 21:42 UT, forming a full
halo CME by 23:18 UT.

Running difference EIT movies clearly show a large
prominence erupting over the SE limb. This event
has therefore been determined backsided.


Nov 20, 2001 Shift Report
--------------------------

High radiation resulted in a Chandra science instrument shutdown,
running SCS 107 at 2001:324:03:15:11 UT. ACE proton levels peaked at
~324:00:00 and are dropping. They are now about half of their peak
twelve hours ago.

SOT:    Proton rates are high and dropping gradually.
Solar activity was low yesterday.  We are still seeing
elevated proton levels from the previous CME, but they are dropping;
no increases are expected in the next day.
There is a low chance of a CME arriving within 96 hrs and a
moderate chance of M or X class flares in the next 48 hours.