Here is one article that critiques the flick in terms of the real world possibilities: http://www.cbsnews.com/news/earthquake-reality-check-san-andreas-movie/

Another in the LA Times points out that the most negative effect of this film and the utter devastation it portrays is the engendering of a feeling of utter helplessness. In reality there are lots of things one can do to lessen damage and save lives-anchor bookcases, tie down hot water heaters, remove the mirror from the ceiling, etc. Be sureyou can turn off your gas.

Good building codes save lives, while retrofitting a structure is costly,with no immediate payoff, as is a high tech early warning system now under construction.

Jeff, I would say that if we have a Big One out here, you may be one of thousands assisting in the disaster,and you may not have a starring role, but your contribution will be significant.