M4.3 Earthquake 80 km W of San Antonio de los Cobres, Argentina — September 19, 2023
2023-09-19 18:06:05 UTC (2023-09-19) · approx. 2:06 PM UTC-4 local
On September 19, 2023 at 18:06 UTC, a magnitude 4.3 intermediate depth earthquake struck 80 km W of San Antonio de los Cobres, Argentina, at a depth of 157.0 km and coordinates -24.3449°, -67.1005°.
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
-67.1005°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 80 km W of San Antonio de los Cobres, Argentina on September 19, 2023 at 18:06 UTC had a depth of 157.0 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.
Actions
Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000kwqc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 19, 2023). M4.3 Earthquake 80 km W of San Antonio de los Cobres, Argentina — September 19, 2023. Retrieved December 2, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kwqc/