March 18th, 2013 (InsideCostaRica.com) Two earthquakes once again rocked Costa Rica in the early morning hours on Saturday. The first, with a magnitude of 3.8 on the Richter scale struck at 2:50am, while the second of 4.2 magnitude struck at 3:52am, according to the National Seismological Network.
The quakes struck at depths of 60 kilometers and 91.6 kilometers, respectively. The quakes were once again caused by the subduction of the Cocos plate.
The 2:50am quake was located 17km northeast of Savegre de Aguirre in Puntarenas, and was felt in most of the Central Valley and in Quepos. The 3:52am quake struck 2km northeast of San Roque in Grecia.