It was a short sharp jolt. I am in San Ramon, California. Part of the San Francisco Bay area about 30 miles east of the San Francisco Airport.
Tuesday, August 23, 2011 at 11:36:54 PM at epicenter
Location 37.748°N, 122.137°W
Depth 9.1 km (5.7 miles)
4 km (3 miles) NNE (19°) from San Leandro, CA
So 100 times weaker than the 5.9 earthquake that hitthe east coast/Virginia 12 hours ago.