M4.5 Earthquake 70 km WNW of San Antonio de los Cobres, Argentina — December 19, 2020
2020-12-19 22:39:55 UTC (2020-12-19) · approx. 6:39 PM UTC-4 local
On December 19, 2020 at 22:39 UTC, a magnitude 4.5 intermediate depth earthquake struck 70 km WNW of San Antonio de los Cobres, Argentina, at a depth of 217.2 km and coordinates -23.9336°, -66.9346°.
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
-66.9346°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.5 earthquake that struck 70 km WNW of San Antonio de los Cobres, Argentina on December 19, 2020 at 22:39 UTC had a depth of 217.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -23.9336°, -66.9346°, which is 70 km WNW of San Antonio de los Cobres, 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: us7000csjd). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 19, 2020). M4.5 Earthquake 70 km WNW of San Antonio de los Cobres, Argentina — December 19, 2020. Retrieved February 27, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000csjd/