From July 13 to last Thursday there were 149 quakes counted, but only eight were strong enough to be felt by humans, said the Observatorio Vulcanológico y Sismológico de Costa Rica. The quakes averaged 21.2 a day, the Observatorio said.
There were three more felt quakes Monday. The largest was at 4:48 a.m. about 47 kilometers northwest of Peñas Blancas on the country’s border with Nicaragua. The magnitude was estimated at 3.6. The estimated epicenter was just north of Riva, Nicaragua.
There was a 2.8 magnitude quake at 2:42 a.m. 7.3 kilometers west southwest of Orosi de Paraiso and a 3.0 quake at 1:01 p.m. 13 kilometers southwest of Estero Garita de Aguirre de Puntarenas. The epicenter was estimated to be in the Pacific Ocean.
Both the Observatorio Vulcanológico y Sismológico de Costa Rica and the Laboratorio de Ingeniería Sísmica are doing a better job of keeping the public informed, so the number of quakes being reported are more numerous than previous years.