Monday 21 June 2021

5.0 Earthquake Shook Costa Rica’s Central Valley Tuesday Morning

registro-madrugada-kilometro-Varablanca-Heredia_LNCIMA20150331_0055_1QCOSTARICA – An earthquake registering 5.0 on the Richter scale was recorded at 3:09am this (Tuesday) morning, 1 kilometer south of Varablanca, Heredia with a depth of 3.4 kilometers.

According to the National Seismological Network (Red Sismológica Nacional – RSN) the earthquake was felt with a strong intensity in the Central Valley, Grecia, Naranjo, San Ramon, Zarcero and Puriscal.

Minutes earlier, at 2:51am, a 3.4 earthquake also shook Varablanca. The tremor, at a depth of 5.4 kilometers, almost went unnoticed.

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The RSN reports five replicas, ranging in magnitudes between 2.6 and 3.4, were recorded. The latest happened at 4:29am, and according to reports was perceived by the population of Varablanca, Alajuela, Heredia, Naranjo, Grecia, Escazu and Santa Ana.

Days ago the Volcanological and Seismological Observatory (Observatorio Vulcanológico y Sismológico (Ovsicori – OVSICORI) confirmed a seismic swarm, magnitudes ranging from 1.8 to 2.3.

Marino Protti, OVSICORI seismologist, explained that this situation is normal since the earthquake of January 8, 2009 in Cinchona, the replicas linked to this event, because the “fault needs time to recover.”

No structural damage or injuries were reported in this morning’s quake.

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Source:, RSN, Oviscori

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We strive for accuracy in its reports. But if you see something that doesn’t look right, send us an email. The Q reviews and updates its content regularly to ensure it’s accuracy.

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