CONFIRMED

Magnitude 4.5 Earthquake Strikes 22 km W of Tamarindo, Costa Rica

USGS seismic network records M4.5 seismic event at depth of 22.782 km.

By USGS Global Seismic Network•Oct 15, 2026, 03:40 PM UTC•1 min read

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Key Developments & Executive Summary

Primary Wire Report: USGS seismic network records M4.5 seismic event at depth of 22.782 km.
Desk & Verification: Normalized under Climate & Earth Systems desk via USGS Seismic Alert Network.
Classification Status: CONFIRMED wire dispatches verified against institutional sources.

A magnitude 4.5 earthquake was recorded by the United States Geological Survey (USGS) Seismic Alert Network at Thu, 15 Oct 2026 15:40:38 GMT. Location: 22 km W of Tamarindo, Costa Rica Epicenter Coordinates: Latitude 10.3031, Longitude -86.049 Hypocenter Depth: 22.782 km Tsunami Flag: No tsunami warning indicated Status: REVIEWED The USGS monitors global seismic activity 24/7 to provide rapid automated alerts and reviewed scientific data for disaster response and public awareness.

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USGS Global Seismic Network

Wire Agency

Contributing Wire Agency — Syndicated via USGS Seismic Alert Network

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Direct primary wire transmission originated by USGS Seismic Alert Network.

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