Original: The 2 May 2010 Pichilemu aftershock was a magnitude 5.9 ( although measured by University of Chile Seismologic Service as 5.8 ) MW earthquake that struck O'Higgins , Chile , at 10:52 a.m. on 2 May 2010 at the epicenter , at a depth of and epicenter northwest of Pichilemu , according to the University of Chile Geological Service .
Simplified: The May , 2 2010 Pichilemu earthquake was a magnitude 6.0 MW earthquake that struck off Pichilemu , Chile , at 10:52 AM on May 2 , 2010 at the epicenter , at a depth of .