The Pacific coast continues to shake from earthquakes that originate in the tension between two tectonic plates.
The Laboratorio de Ingenieria Sismica reported a 9 a.m. Monday event that has an estimated epicenter in the Pacific Ocean off Tamarindo.
At 8:42 p.m. a quake took place in the middle of the mouth of the gulf of Nicoya about 19 kilometers east of Tambor on the Nicoya peninsula, said the
Laboratorio, which estimated the magnitude at 3.7. The Observatorio Vulcanológico y Sismológico estimated both quakes at 3.8.
The moderate quakes continue to be a daily occurrence in that area where the Cocos tectonic plate is inching under the lighter Caribbean plate.
The Sept. 5 quake with a magnitude of 7.6 off the Pacific coast of the peninsula still is creating replicas.
There also was a 3.2-magnitude quake a kilometer east of Santo Domingo de Nicoya at 7:53 a.m. Monday, said the Observatorio.