A 6.2 magnitude quake off the northwestern coast of Nicaragua was felt in the Central Valley at 3:37 a.m. Sunday. Instruments showed that the quake was felt in the western half of Costa Rica and most strongly in Paquera, San Ramón and Grecia, said the Instituto de Investigaciones en Ingeniería at the Universidad de Costa Rica.
The Earthquake Information Center of the U.S. Geological Survey placed the epicenter some 23 kilometers west southwest of Jiquillo, Nicaragua.
The Laboratorio here said that due to the estimated depth of about 70 kilometers the quake probably was the result of internal deformations in the Cocos tectonic plate. The Laboratorio said that the depth and distance reduced the force of the earthquake as it reached Costa Rica.
Perhaps in response to the Nicaraguan event, a 4.4 magnitude quake took place at 9:37 a.m. Sunday about 13.5 kilometers south southeast of Nosara on the far Pacific coast. The quake was registered as moderate on instruments in Nosara.