M4.3 Earthquake 40 km S of Antofagasta, Chile — September 13, 2022
2022-09-13 19:57:26 UTC (2022-09-13) · approx. 2:57 PM UTC-5 local
On September 13, 2022 at 19:57 UTC, a magnitude 4.3 shallow crustal earthquake struck 40 km S of Antofagasta, Chile, at a depth of 51.3 km and coordinates -24.0192°, -70.3416°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-70.3416°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Antofagasta, Chile?
The magnitude 4.3 earthquake that struck 40 km S of Antofagasta, Chile on September 13, 2022 at 19:57 UTC had a depth of 51.3 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000i7r0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 13, 2022). M4.3 Earthquake 40 km S of Antofagasta, Chile — September 13, 2022. Retrieved November 19, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i7r0/