On Thursday, a 4.0 temblor centered in Berkeley gave a short wake-up jolt to the Bay Area. The quake came just hours after the Great California Shakeout, the largest earthquake drill in history. We talk about the best way to prepare for an earthquake -- and what to do when one hits.

• More: Earthquake preparedness tips and more - at Earthquake.USGS.gov
• More: "Totally Unprepared": - Earthquake Resources