The first quake Tuesday took place about 8.2 kilometers (5 miles) west of Bahia Ballena in the canton of Osa on the central Pacific, said the Laboratorio de Ingeniería Sísmica at the Universidad de Costa Rica. The magnitude was estimated at 3.8.
The second Tuesday quake was located about 5.3 kilometers (3.3 miles) southeast of Solanía at Libano, Tilarán, said the Laboratorio. The magnitude also was estimated at 3.8.
At 32 minutes after midnight today a 3.8 quake took place about 9.2 kilometers (5.7 miles) north northeast of Pavon de Golfito, said the Laboratorio. There were several aftershocks, said the Laboratorio.
At 46 minutes after midnight there was a second quake in the vicinity of Solania de Libano, Tilaran. This one was estimated to be about 7.1 kilometers (4.4 miles) south southeast. The magnitude was estimated at 3.3.