An early morning earthquake gently swayed the Central Valley and most points in the center of the country. The Laboratorio de Ingeniería Sísmica at the Universidad de Costa Rica said the estimated epicenter was about 1.1 kilometers west northwest of La Unión de Montes de Oro, Puntarenas. That would put it about 10.1 kilometers north of Miramar.
The Laboratorio estimated the magnitude at 4.8 and said the time was 1:33 a.m. The quake was felt in the capital some 20 seconds later.
The Red Sismológica Nacional estimated the magnitude at 5.2.