M4.7 Earthquake 270 km SSE of Ushuaia, Argentina — August 6, 2025
2025-08-06 23:51:53 UTC (2025-08-06) · approx. 7:51 PM UTC-4 local
On August 6, 2025 at 23:51 UTC, a magnitude 4.7 shallow crustal earthquake struck 270 km SSE of Ushuaia, Argentina, at a depth of 10.0 km and coordinates -57.1605°, -67.1881°. This earthquake was detected by 30 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.1881°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Ushuaia, Argentina?
The magnitude 4.7 earthquake that struck 270 km SSE of Ushuaia, Argentina on August 6, 2025 at 23:51 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 -57.1605°, -67.1881°, which is 270 km SSE of Ushuaia, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000qyrh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 6, 2025). M4.7 Earthquake 270 km SSE of Ushuaia, Argentina — August 6, 2025. Retrieved October 25, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qyrh/