Some thoughts on the current Los Angeles earthquake sequence.

It was pointed out on this board by Manda on 21 October (post #10216
in archives) that the current sequence of earthquakes in the
general Los Angeles area tend to occur on Sundays.
I checked the SCSN catalog for 2001 and found that all 7 events of Ml>=3
in this sequence have, indeed occurred on a Sunday (including today's).
I wonder what the random probability of that is?
The sequence also appears to be moving from NW to SE. In the list
below note that the first events on 14 January occurred at about
34.3N 118.4W and have gradually moved SE to today's epicenters
at 33.9N 118.26W. This suggest the segment of the fault in that
region (about 50 km long) may be ready to rupture in an earthquake
of ML>6.
Today's earthquakes were followed by regional events including
a Ml 2.2 near Pine Flat and a Ml 2.6 near Mammoth Lakes within
30 minutes of the Ml 3.7 mainshock. I expect the mainshock may be
triggering areas already under stress from the strong geomagnetic
storm that began this morning and is currently in progress.

Earthquakes of Ml>=3 in the L.A. sequence during 2001

MO DA HR MN SEC YEAR N LAT W LONG DEP ML DAY OF WEEK (TIME)

1 14 2 26 14.1 2001 34.284 -118.404 8 4.3 SUNDAY (UT)
1 14 2 50 53.7 2001 34.289 -118.403 8 4.0 SUNDAY (UT)
9 9 23 59 18.0 2001 34.000 -118.387 4 4.2 SUNDAY (UT)
10 7 17 29 7.8 2001 34.000 -118.262 6 3.0 SUNDAY (UT)
10 21 17 28 57.2 2001 34.000 -118.397 10 3.0 SUNDAY (PDT)
10 28 16 29 54.2 2001 33.918 -118.281 6 3.0 SUNDAY (UT)
10 28 16 27 45.2 2001 33.926 -118.264 6 3.7 SUNDAY (UT)