3.4
Earthquake Details: Costa Rica
8/20/2026, 3:22:36 PM
A magnitude 3.4 earthquake occurred near Costa Rica on 8/20/2026 at 3:22:36 PM. The seismic event was recorded at a depth of -10 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Regional Seismicity
View recent seismic activity near this event:
Costa RicaSan JoseSan Isidro de El General (Nearest City)Technical Details
Depth-10 km
Significance0
Latitude8.6585
Longitude-83.2931
Event IDemsc:20260820_0000479
Magnitude3.4
Updated:8/20/2026, 4:08:13 PM
External Resources
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Time & depth
- Local time
- 8/20/2026, 9:22:36 AM CST
- UTC
- 8/20/2026, 3:22:36 PM UTC
-10 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 10
Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Aug 20, 2026, 04:08 PM UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.