An early afternoon sea quake took place off the northern coast of the country Wednesday.
The quake was at 1:46 p.m. The Laboratorio de Ingeniería Sísmica at the Universidad de Costa Rica estimated the magnitude at 4.5 with a depth of just three kilometers.
The laboratory said a number of sensing stations in
Guanacaste failed to register the quake because it was so weak inland. The location was 63.7 kilometers from Conchal de Santa Cruz and 67.1 kilometers from Playa Potrero. That is about 40 to 42 miles.
A second quake Wednesday took place about 3:34 p.m. about 33 kilometers into the Pacific from Dominical, according to the Observatorio Vulcanológico y Sismológico de Costa Rica.
The magnitude was estimated at 3.5.