The May, 2 2010 Pichilemu earthquake was a magnitude 6.0 M earthquake that struck off Pichilemu, Chile, at 10:52 AM on May 2, 2010 at the epicenter, at a depth of . USGS described that the epicenter was south-southwest of San Antonio, west Regional capital of Rancagua, northwest of Curicó and southwest of the Chilean capital of Santiago.