Small earthquake rattles Richmond, VA areaAccording to reports from a Virginia affiliate the Richmond Region experienced a small earthquake that shook part of the Richmond region early Sunday, the U.S. Geological Survey said. The magnitude-2.8 quake hit shortly after 3 a.m., the agency reported. The quake’s epicenter was about 6 miles south-southeast of Louisa.  Paul Caruso, a geophysicist at the USGS office in Golden, Colo., said the tremor was “almost certainly” an aftershock of the Aug. 23, 2011, magnitude-5.8 quake that had its epicenter in Louisa. That quake was felt from southeastern Canada to Georgia and west to the Mississippi River.The epicenter of Sunday’s quake was only about a mile from the 2011 quake’s epicenter. “That’s within our margin of error,” Caruso said. The 2011 quake caused damage estimated as high as $300 million. The quake’s ill effects were greatest in Louisa, where it damaged thousands of homes, closed two schools and temporarily shut down the North Anna nuclear power plant. No one was seriously injured. A Louisa Sheriff’s Department spokesman said Sunday’s quake prompted “a handful of calls,” none reporting injuries or damage. The USGS maintains a “Did You Feel It?” function on its website at earthquake.usgs.gov, asking people to report if they felt a tremor, and the intensity of the tremor. As of 5:30 p.m. Sunday, 237 people in 49 ZIP codes surrounding the epicenter reported feeling a weak or light tremor. FULL REPORT