Well, that was interesting.
A magnitude-5.9 earthquake just rattled Virginia, and we felt it in our office about 15 minutes later.
According to the USGS, this is the strongest quake since 1897 in Virginia:
The shock was felt severely at Narrows, about 3 kilometers west of Pearisburg. Here, the surface rolled in an undulating motion, water in springs became muddy, and water in some springs ceased to flow. The flow of water in springs also was disturbed in the area of Pearisburg, about 70 kilometers west of Roanoke, and Sugar Run.
Civic-minded nerd that I am, I have filed a report with the USGS. If you felt the thing, you should, too.