M4.1 Earthquake 27 km SSW of Calingasta, Argentina — August 29, 2025
2025-08-29 18:43:16 UTC (2025-08-29) · approx. 1:43 PM UTC-5 local
On August 29, 2025 at 18:43 UTC, a magnitude 4.1 intermediate depth earthquake struck 27 km SSW of Calingasta, Argentina, at a depth of 116.5 km and coordinates -31.5715°, -69.5068°.
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
-69.5068°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Calingasta, Argentina?
The magnitude 4.1 earthquake that struck 27 km SSW of Calingasta, Argentina on August 29, 2025 at 18:43 UTC had a depth of 116.5 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: us7000qryw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 29, 2025). M4.1 Earthquake 27 km SSW of Calingasta, Argentina — August 29, 2025. Retrieved November 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qryw/