Pacific coast residents felt another offshore quake two minutes before midnight Sunday.
The epicenter was estimated to be 12.2 kilometers (7.5 miles) west southwest of Parque Nacional Manuel Antonio and 15.8 kilometers (9.8 miles) southwest of Quepos in the Central Pacific, said the Laboratorio de Ingeniería Sísmica of the Universidad de Costa Rica. The quake was estimated to have been 38.2 kilometers (23.6 miles) deep under the Pacific Ocean.
There had been a quake a little less than eight hours earlier, at 4:11 p.m., in the Pacific off Potrero in the Gulf of Papagayo in northwestern Costa Rica. The Quepos quake was estimated at a magnitude of 3.1. The Papagayo quake was about 3.4, the laboratory said.