it is weird. no pattern i can detect. (but what do i know)
trailers are coming off their foundations says the update on earthquake-report.com
Nope no patterns...What is key is the S/wave recorded here between 15:15 and 17:15 before the first recorded quake.
http://pasadena.wr.usgs.gov/webicorder/GLA_BHZ_CI_—.2012082612.gif
Errant could you be so kind as to capture that image and post it?
