Magnitude 7.4 EARTHQUAKE STRIKES SAN MARCOS STATEGUATEMALA10:35 AM LOCAL TIMEWEDNESDAY, NOVEMBER 7, 2012. The quake, centered about 15 miles from the coastal city of Champerico occurred at a depth of 45 km (26 miles), and was felt throughout Central America and as far north as Mexico City. Powerpoint presentation courtesy of Dr Walter Hays, Global Alliance for Disaster Reduction