Earthquake! (for some values of)

Small Earthquake Felt in D.C. and Northern Virginia
1.8 1.9 1.8 according to the USGS. Californians, you may commence snickering about the fact that it makes news.

The U.S. Geological Survey is placing the epicenter of the rumble at 1 mile southwest of Annandale. Ft. Belvoir is located 15 miles south of Annandale. WTOP is going ahead and calling this event an earthquake, even though officials at Ft. Belvoir have said their blasting may have been responsible."

(A Fort Belvoir spokesman followed up to say that it wasn't them, their blasting is set for 4:30 PM.)