Earthquake?

I'm sitting in my bed and suddenly felt a little wobbly. I thought maybe it was the really big truck driving by, but then the truck went away and the wobbliness continued. Then I looked at my wall and the mirror was shaking. This whole episode lasted maybe 10 seconds.

Interesting.

Update:

Suspicions confirmed!

http://www.cnn.com/2008/US/09/06/california.quake/index.html

Minor quake jolts Oakland, California

SAN FRANCISCO, California (CNN) -- A magnitude 4.0 earthquake struck east of Oakland, California, at around 9 p.m. ET Friday, according to the U.S. Geological Survey.

The quake's epicenter was about 10 miles (16 kilometers) below the surface, the USGS reported.

Residents said they felt a sharp jolt, saw plants sway and dishes rattle.

There were no initial reports of damage or injuries.