San Diego, California - Hopefully, you participated in The Great California ShakeOut. It is a great reminder of the threat lurking beneath our feet. “The Big One” on the San Andreas Fault is something that all of California should be ready for.

Surprisingly enough, San Diego fares well in the damage models for such an earthquake. But there’s a lesser known fault running through the heart of the city, and it has the attention of emergency planners. Dr. Pat Abbott, a geology professor at San Diego State University, shows us where you can see signs of the Rose Canyon Fault, and how dangerous it could be.

To get yourself prepared for such a disaster, visit for tips and links to preparedness resources.