M4.6 Earthquake 85 km WNW of San Antonio de los Cobres, Argentina — May 23, 2021
2021-05-23 18:37:07 UTC (2021-05-23) · approx. 2:37 PM UTC-4 local
Felt by 1 person across nearby locations.
On May 23, 2021 at 18:37 UTC, a magnitude 4.6 intermediate depth earthquake struck 85 km WNW of San Antonio de los Cobres, Argentina, at a depth of 164.3 km and coordinates -23.9227°, -67.0905°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-67.0905°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.6 earthquake that struck 85 km WNW of San Antonio de los Cobres, Argentina on May 23, 2021 at 18:37 UTC had a depth of 164.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -23.9227°, -67.0905°, which is 85 km WNW of San Antonio de los Cobres, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000e5kr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 23, 2021). M4.6 Earthquake 85 km WNW of San Antonio de los Cobres, Argentina — May 23, 2021. Retrieved July 31, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000e5kr/