Hayward Fault Quake

"July 20 (Bloomberg) -- Northern California was shaken this morning by a magnitude-4.2 earthquake, the U.S. Geological Survey said.
The earthquake struck at 4:42 a.m. local time, 2.5 miles (4 kilometers) east-northeast of Oakland, and was 3.6 miles deep, the agency said in a report on its Web site. "

Earthquakes happen with som frequency and usually go unnoticed. Peter and Jason woke up. I didn't. The scarry part of this one is that it is on the Hayward fault and the fault that will cause the greatest damage. Sometime in the next 40 years a 7.0 or greater is expected. A 7.0 shake would release 30,000 times as much energy as this one and virtually wipe out everything in the east bay!