M3.9 Earthquake 67 km W of San Antonio de los Cobres, Argentina — June 25, 2023
2023-06-25 23:20:13 UTC (2023-06-25) · approx. 7:20 PM UTC-4 local
On June 25, 2023 at 23:20 UTC, a magnitude 3.9 intermediate depth earthquake struck 67 km W of San Antonio de los Cobres, Argentina, at a depth of 188.6 km and coordinates -24.2342°, -66.9861°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.9861°E
Technical Information
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Common Questions
How strong was the magnitude 3.9 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 3.9 earthquake that struck 67 km W of San Antonio de los Cobres, Argentina on June 25, 2023 at 23:20 UTC had a depth of 188.6 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000kb1n). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 25, 2023). M3.9 Earthquake 67 km W of San Antonio de los Cobres, Argentina — June 25, 2023. Retrieved September 8, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kb1n/