Twin quakes hit Friday and again on Sunday

Two earthquakes greater than 4.0 took place in the Pacific south of the Osa Peninsula Friday. And two lesser quakes took place near San Cristóbal de Desamparados Sunday.

The Friday quakes were estimated at 4.6 and 4.1 by the Observatorio Vulcanológico y Sismológico de Costa Rica. The stronger quake took place at 6:51 a.m. Friday. Less than a hour later, at 7:29 p.m., the second quake took place. This is an area prone to quakes.

The Laboratorio de Ingenieria Sismica said the quakes were felt strongest in Corredores. The quakes also were felt in Puerto Jiménez and Ciudad Neily.

The Sunday quake at 3:04 a.m. was estimated at 3.7 magnitude by the Laboratorio. The Observatorio said 3.5. The second quake in nearly the same point was at 3:57 p.m. The Laboratorio said it had a 3.2 magnitude. The Observatorio said 2.9. The two earthquake monitoring agencies use different systems.

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