M4.1 Earthquake 76 km SW of Chilecito, Argentina — July 12, 2023
2023-07-12 23:34:40 UTC (2023-07-12) · approx. 6:34 PM UTC-5 local
On July 12, 2023 at 23:34 UTC, a magnitude 4.1 shallow crustal earthquake struck 76 km SW of Chilecito, Argentina, at a depth of 21.7 km and coordinates -29.5632°, -68.1444°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-68.1444°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Chilecito, Argentina?
The magnitude 4.1 earthquake that struck 76 km SW of Chilecito, Argentina on July 12, 2023 at 23:34 UTC had a depth of 21.7 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000kfaa). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 12, 2023). M4.1 Earthquake 76 km SW of Chilecito, Argentina — July 12, 2023. Retrieved September 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kfaa/