Shake Maps

Predicting earthquakes on a short time scale is impossible. However, we know in the long term where earthquakes will occur, and we also know pretty well how the ground will behave.

This site details recent work modeling how Southern California will respond to the next big quake. It's just a matter of time.

http://www.tacc.utexas.edu/news/feature-stories/2010/clear-with-a-chance-of-tremors/