M4.8 Earthquake 123 km WNW of Tamarindo, Costa Rica — August 7, 2023
2023-08-07 04:33:07 UTC (2023-08-07) · approx. 10:33 PM UTC-6 local
On August 7, 2023 at 04:33 UTC, a magnitude 4.8 shallow crustal earthquake struck 123 km WNW of Tamarindo, Costa Rica, at a depth of 10.0 km and coordinates 10.6042°, -86.9232°. This earthquake was detected by 128 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-86.9232°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Tamarindo, Costa Rica?
The magnitude 4.8 earthquake that struck 123 km WNW of Tamarindo, Costa Rica on August 7, 2023 at 04:33 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 10.6042°, -86.9232°, which is 123 km WNW of Tamarindo, Costa Rica.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000kydn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 7, 2023). M4.8 Earthquake 123 km WNW of Tamarindo, Costa Rica — August 7, 2023. Retrieved October 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kydn/