FYI, for reference, I was working 50 feet away from the freeway pictured in the link below on that day...
http://en.wikipedia.org/wiki/Cypress_Street_Viaduct#/media/File:Cypress_collapsed.jpg
People I worked with had cars parked underneath the partially collapsed section. Someone went under to retrieve their Jaguar...nuts...
There were huge aftershocks for weeks after that.
I have felt many earthquakes above 6.0 and about the only difference between a 6.0 and thunderstorms here is that earthquakes last longer.