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© The Extinction Protocol / USGS
5.4 magnitude earthquake struck off the west coast of Costa Rica. The depth of the earthquake was 39.6 km (24.6 miles). The epicenter of the earthquake was 83 km (51 miles) WSW of SAN JOSE, Costa Rica and 162 km (100 miles) S of San Carlos, Nicaragua.

The earthquake was tectonic in nature and represents yet another stress release on the Cocos tectonic plate which experienced a 6.3 earthquake at Revilla Gigedo Islands west of Mexico on November 1. Costa Rica is a tri-junction tension point lodged between the Cocos, Caribbean and Nazca tectonic plate.

There were no immediate reports of damage.