M4.5 Earthquake 265 km S of Ushuaia, Argentina — August 14, 2025
2025-08-14 22:03:19 UTC (2025-08-14) · approx. 5:03 PM UTC-5 local
On August 14, 2025 at 22:03 UTC, a magnitude 4.5 shallow crustal earthquake struck 265 km S of Ushuaia, Argentina, at a depth of 10.0 km and coordinates -57.1844°, -67.8729°. This earthquake was detected by 17 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.8729°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near Ushuaia, Argentina?
The magnitude 4.5 earthquake that struck 265 km S of Ushuaia, Argentina on August 14, 2025 at 22:03 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 -57.1844°, -67.8729°, which is 265 km S of Ushuaia, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000r0uw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 14, 2025). M4.5 Earthquake 265 km S of Ushuaia, Argentina — August 14, 2025. Retrieved November 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000r0uw/