Thanks for the heads-up EQF.
The storm appears to have begun at approximately 01:50 UT this morning and lasted
for about 12 hours at strong levels. For details of the GOES geomagnetic field see
the site below:
http://sec.noaa.gov/ftpdir/lists/geomag/20020324_G10mag_1m.txt
Look at the He (Field directed perpendicular to the earth) readings between 01:50 and
01:60 - you will see an approximate doubling of the intensity of the field during this
time, the indication of the onset of the storm.

The areas most directly affected by such a sudden commencement storm are
facing the sun at the time of occurrence - that is areas where it is local noontime,
and areas which are on the opposite side of the earth - that is areas where it is local
midnight. I usually considering triggered activity possible within 30 degrees of these
longitude, although the most notable events often occur within 5-15 degrees of this
longitude. For this storm the respective longitudes are 28W and 152E (anti- and sub-solar).

Oh, and by the way, the moderate earthquakes which have been listed since the
storm began are about 15 degrees from these two longitudes - in Vanuatu and the
North Mid-Atlantic Ridge.
GSSC locations:

2002/03/24 14:36:03.0 25.0N 46.3W Ms4.7 M GSSC NORTHERN MID-ATLANTIC RIDGE
2002/03/24 08:03:19.0 13.6S 167.4E 200 M 5.5 M GSSC VANUATU ISLANDS
2002/03/24 05:55:19.2 16.5S 172.5E 80 Ms4.5 M GSSC VANUATU ISLANDS REGION

• Geomagnetic Field minute by minute