The CME arrival was followed quickly by a strong sudden commencement
geomagnetic storm. The storm started at 03:21 UT. Anti-solar areas
are within 20 degrees longitude of 50W; subsolar regions within
20 degrees of 130E. This includes most of the western Pacific
region and the eastern Caribbean Sea. These areas will be under
seismic watch conditions for the next two days. Larger associated events
are likely to occur from October 31-November 2.
A proton enhancement was beginning at about 06:00 UT and may lead
to a proton storm.