M4.1 Earthquake 69 km NW of Ollagüe, Chile — July 20, 2023
2023-07-20 17:19:54 UTC (2023-07-20) · approx. 12:19 PM UTC-5 local
On July 20, 2023 at 17:19 UTC, a magnitude 4.1 intermediate depth earthquake struck 69 km NW of Ollagüe, Chile, at a depth of 120.0 km and coordinates -20.8526°, -68.7955°.
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
-68.7955°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Ollagüe, Chile?
The magnitude 4.1 earthquake that struck 69 km NW of Ollagüe, Chile on July 20, 2023 at 17:19 UTC had a depth of 120.0 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 4.1 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: us7000kh6a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 20, 2023). M4.1 Earthquake 69 km NW of Ollagüe, Chile — July 20, 2023. Retrieved September 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kh6a/