2011 magnitude-5.8 earthquake unusual quake earthquake on the East Coast 2011 magnitude-5.8 earthquake Washington Post 5.8 magnitude earthquake 5.8 magnitude earthquake magnitude 5.8 earthquake earthquake yesterday’s East Coast earthquake Washington Post that one time the District experienced an earthquake 5.8 magnitude earthquake from the National Zoo earthquake on the East Coast 5.8 earthquake Washington Post Washington Post earthquake on the East Coast earthquake struck Washington 5.8-magnitude earthquake tumbles chimneys tumbles chimneys earthquake on the East Coast 5.8 earthquake 5.8 magnitude earthquake 5.8 magnitude earthquake earthquake 5.8 earthquake this time, earthquake 5.8 earthquake this time, 5.8 Earthquake Shakes East Coast, Rattles Residents earthquake on the East Coast earthquake on the East Coast Wednesday 8/23/11 an earthquake Wednesday 8/23/11 an earthquake everyone knows Virginia earthquake on the East Coast reports 2011, when a minor (but relatively powerful) quake "rattled" August’s 5.8 magnitude earthquake.