Millions of Californians are expected to participate in an annual earthquake preparedness drill on Thursday.
A series of moderate to light earthquakes continued to rattle parts of the Imperial Valley Monday morning, Cal Tech officials said.
In the wake of a magnitude-5.8 earthquake that rattled much of the East Coast Tuesday, Los Angeles County officials reminded residents to ensure they are prepared for a quake.
Southern California Gas Co. wants customers to prepare for the next major earthquake in the wake of the devastation in Japan.
California and federal emergency responders have signed a plan designed to respond to a disastrous earthquake in Southern California.