Tuesday started with a sharp shock in the Santa Cruz vicinity.
The Laboratorio de Ingenieria Sismica reported a 4.1-magnitude quake there at 2:28 a.m. The epicenter was estimated to be 10.2 kilometers or about 6 miles north northeast of Cuajiniquil de Santa Cruz. The quake was felt in Nosara, Nicoya, Paquera and Santa Cruz, said the Laboratorio. That was the second moderate quake in the area under nine hours.
At 6:12 p.m. the Laboratorio logged what was estimated as a 4.2 magnitude quake about 7.6 kilometers (about 5 miles south southwest of Veintisiete de Abril de Santa Cruz. The Red Sismológica Nacional attributed this to the contact between the Cocos and Caribbean tectonic plates. It said the quake was felt in Santa Cruz, Playas del Coco, Tamarindo, Sardinal and Nicoya. The Laboratorio estimated the magnitude at 4.4.
Earlier in the day there was an estimated 3.3-magnitude earthquake that the Laboratorio said was 1.5 kilometers (about a mile) north northeast of San Cristobal de Desamparados. The Red attributed the 3:30 p.m. quake to a local fault.
As A.M. Costa Rica reported Monday, an early morning quake took place in the hills above Jacó. The magnitude was estimated at 4.4 and the time was 2:46 a.m.
The Laboratorio said the quake was at Sabanillas de Acosta and about 12.7 kilometers south southeast of Puriscal.