Did you feel it? 3.7 quake strikes near Danville; 2.7 aftershock follows

I felt it in my office near downtown Walnut Creek. My co-worker said, "Is that a quake?" Then I felt a slight swaying.

The U.S. Geological Survey reports that a Magnitude-3.7 quake struck at 3:15 p.m., with an epicenter about one mile northeast of Danville, and with a depth of about five miles.

UPDATE: At 4:52 p.m., a Magnitude 2.7 quake struck, again one mile northeast of Danville, and again with a depth of about five miles.

Didn't feel this one.