M5.1 Earthquake 45 km NNW of San Antonio de los Cobres, Argentina — December 4, 2020
2020-12-04 04:06:17 UTC (2020-12-04) · approx. 12:06 AM UTC-4 local
On December 4, 2020 at 04:06 UTC, a magnitude 5.1 intermediate depth earthquake struck 45 km NNW of San Antonio de los Cobres, Argentina, at a depth of 193.4 km and coordinates -23.8622°, -66.5468°.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.5468°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.1 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 5.1 earthquake that struck 45 km NNW of San Antonio de los Cobres, Argentina on December 4, 2020 at 04:06 UTC had a depth of 193.4 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -23.8622°, -66.5468°, which is 45 km NNW of San Antonio de los Cobres, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000cmu1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 4, 2020). M5.1 Earthquake 45 km NNW of San Antonio de los Cobres, Argentina — December 4, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000cmu1/