ROCKVILLE, Md. (AP) — A small earthquake shook the Maryland suburbs of Washington, D.C., early Tuesday, according to the U.S. Geological Survey. The quake with a preliminary magnitude of 2.3 happened around 12:51 a.m. It was centered nearly 2 miles (about 3.2 kilometers) west of Rockville in Montgomery County, with a preliminary depth of about…… Continue Reading