My thinking is fairly parallel to Russ's - evacuate if a local wildfire threatens - I have been ready to do this twice in the 25+ years I have lived here (we are ripe for a third occurrence) and stay in place if the ground shakes really bad.

With an EQ, you have essentially no advance warning and the freeways will be disrupted/clogged immediately. Might was well hunker down and use my preps plus what I can salvage from the rubble. I am a CERT volunteer and I like their priorities - take care of yourself first, then your immediate family, then neighbors. Once that is done, link up with other CERTs and assist the larger community. Just wish CERT had more comprehensive and regular training.