The quake hit at 5:04 a.m. ET with a magnitude of 3.6, according to the U.S. Geological Survey. It was centered near Rockville, Md., the USGS said. NBC News reported that the quake was felt in the D.C.-area, Maryland, Virginia, West Virginia and Pennsylvania. Amy Vaughn, a spokeswoman for USGS, told NBC station WRC that the quake was the largest recorded within 50 kilometers (31 miles) of Washington since a database was created in 1974. The previous record within that time period was a 2.6 magnitude temblor in 1990."So this is pretty significant for your area," Vaughn told WRC-TV. The area's last quake — with a magnitude of 2.0 — occurred in May 2008. via msnbc
