Four quakes above magnitude 4 hit Costa Rica’s Southern Area in 32 hours
A magnitude 5.1 earthquake struck near Golfito on Friday night, the strongest of four events above magnitude 4 recorded in Costa Rica’s Southern area in roughly 32 hours. The Red Sismológica Nacional (RSN) of the University of Costa Rica placed the quake at 7:59 p.m. on September 11, with an epicenter 10 kilometers (6 miles) east of Golfito in the province of Puntarenas. The RSN described its figures as preliminary and said the magnitude, location and depth could change as analysts finish processing the data. Thirty minutes later, at 8:29 p.m., a magnitude 4.0 movement was recorded southwest of Quepos at a depth of 10 kilometers (6 miles). Whether it was an aftershock of the Golfito event or a separate rupture has not been established. Both quakes followed a pair of movements on Thursday afternoon off the Osa Peninsula. The Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI) at the Universidad Nacional registered a magnitude 4.8 at 12:03 p.m., some 48.2 kil...