M4.7 Earthquake 81 km W of San Antonio de los Cobres, Argentina — August 20, 2026
2026-08-20 03:09:06 UTC (47 min ago) · approx. 11:09 PM UTC-4 local
On August 20, 2026 at 03:09 UTC, a magnitude 4.7 intermediate depth earthquake struck 81 km W of San Antonio de los Cobres, Argentina, at a depth of 166.7 km and coordinates -24.3365°, -67.1154°. This earthquake was detected by 60 seismic stations with excellent 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
-67.1154°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.7 earthquake that struck 81 km W of San Antonio de los Cobres, Argentina on August 20, 2026 at 03:09 UTC had a depth of 166.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -24.3365°, -67.1154°, which is 81 km W of San Antonio de los Cobres, 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: us6000tm1m). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 20, 2026). M4.7 Earthquake 81 km W of San Antonio de los Cobres, Argentina — August 20, 2026. Retrieved August 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tm1m/