M4.3 Earthquake 73 km WNW of San Antonio de los Cobres, Argentina — October 31, 2023
2023-10-31 20:29:41 UTC (2023-10-31) · approx. 4:29 PM UTC-4 local
On October 31, 2023 at 20:29 UTC, a magnitude 4.3 intermediate depth earthquake struck 73 km WNW of San Antonio de los Cobres, Argentina, at a depth of 215.6 km and coordinates -24.0624°, -67.0259°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.0259°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.3 earthquake that struck 73 km WNW of San Antonio de los Cobres, Argentina on October 31, 2023 at 20:29 UTC had a depth of 215.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000l7x0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 31, 2023). M4.3 Earthquake 73 km WNW of San Antonio de los Cobres, Argentina — October 31, 2023. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000l7x0/