M4.4 Earthquake 53 km W of Talcahuano, Chile — May 23, 2023
2023-05-23 23:18:20 UTC (2023-05-23) · approx. 6:18 PM UTC-5 local
On May 23, 2023 at 23:18 UTC, a magnitude 4.4 shallow crustal earthquake struck 53 km W of Talcahuano, Chile, at a depth of 18.8 km and coordinates -36.7862°, -73.7152°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-73.7152°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Talcahuano, Chile?
The magnitude 4.4 earthquake that struck 53 km W of Talcahuano, Chile on May 23, 2023 at 23:18 UTC had a depth of 18.8 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000k3cp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 23, 2023). M4.4 Earthquake 53 km W of Talcahuano, Chile — May 23, 2023. Retrieved July 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k3cp/