or the doubters among you who still do not believe that there is
considerable disturbance on seismometers associated with strong
CME, I would suggest your take a gander at the seismograms tonight
for the two strong CME's that arrived in the past 3 hours. The
Kp index is now 9 - as high as it will go. For graphics, forecast
and general information see:
http://sec.noaa.gov/today.html

For specific data on exact timing of CME collisions see:

http://sec.noaa.gov/ftpdir/lists/geomag/20011106_G8mag_1m.txt

The two CMEs arrived at 01:52-01:53 UT tonight (05:52 PST)
and 03:57 UT (7:57 UT PST)

The collison was well recorded on a number of seismograms. Jen of
New Zealand has already noted the disturbance on the Karori and
Cannon Point seismograms in New Zealand, but here are others
to check:

At 01:53 the change in the total field was about 50%. Seismograms
recorded this event as follows:

La Paz, Bolivia (LPAZ) 01:53 slight up first motion
Wright Valley Antarctica (VNDA) 01:53 Strong down first motion
Adak, Aleutians (ADK ) 01:53 slight up first motion
College Outpost Alaska (COLA) 01:53 slight up first motion
Guam, (GUMO) 01:53 slight first motion
Kongsberg, Norway (KONO) 01:53 strong down first motion
Petropavlovsk, Russia (PET ) 01:53 slight up first motion
So. Karori, N.Z. (SNZO) 01:53 very strong down first motion
Yakutsk, Russia (YAK) 01:52 Strong down first motion

A second CME arrived at 03:57 and was very strongly recorded
at:

Adak, Aleutians (ADK ) 03:57 Very strong up first motion
So. Karori, N.Z. (SNZO) 03:57 very strong down first motion

These seismograms suggest a strong reaction to the collisions
of the earth with the solar wind. This will probably show up
in seismicity. In fact, shortly after the first CME a series of
three events of Ml 2.8 , 2.7 and 2.4 began in the Coalinga area.
Since Don had forecast these events, an additional posting will
be made as we see what the progress of this sequence is.

For USGS on-line seismograms see:

http://aslwww.cr.usgs.gov/Seismic_Data/heli2.htm

• GS Online seismograms