M4.0 Earthquake 52 km NW of La Ligua, Chile — April 5, 2023
2023-04-05 21:04:20 UTC (2023-04-05) · approx. 4:04 PM UTC-5 local
On April 5, 2023 at 21:04 UTC, a magnitude 4.0 shallow crustal earthquake struck 52 km NW of La Ligua, Chile, at a depth of 37.6 km and coordinates -32.1161°, -71.6255°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-71.6255°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake near La Ligua, Chile?
The magnitude 4.0 earthquake that struck 52 km NW of La Ligua, Chile on April 5, 2023 at 21:04 UTC had a depth of 37.6 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000k28d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 5, 2023). M4.0 Earthquake 52 km NW of La Ligua, Chile — April 5, 2023. Retrieved June 13, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k28d/