About 12:45 LA time, a 5.8 quake in eastern LA that appears to be off the Elsinore Fault just happened. People from a forum I read at living in LA have recently had feelable movement on the ground, dizziness, and smelling soil of rotton eggs and the like. The back smell started maybe a month ago now.

http://quake.usgs.gov/recenteqs/latestfault.htm