The magnitude 4.2 event occurred 4 km (2 miles) ENE of Oakland, CA.
The hypocentral depth is 6 km ( 4 miles).
It was a sharp jolt, this one.
Had a weird dream afterwards about saving my lladros and finding one of them had its hands broken off. The only thing that broke during the 1989 Loma Prieta earthquake was a lladro which fell off the shelf. The bedroom door did get knocked off its hinges when it got hit by the dresser mirror, but it was a quick fix.