M4.3 Earthquake 158 km N of Calama, Chile — January 8, 2023
2023-01-08 20:23:58 UTC (2023-01-08) · approx. 3:23 PM UTC-5 local
On January 8, 2023 at 20:23 UTC, a magnitude 4.3 intermediate depth earthquake struck 158 km N of Calama, Chile, at a depth of 128.4 km and coordinates -21.0474°, -68.6382°.
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
-68.6382°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Calama, Chile?
The magnitude 4.3 earthquake that struck 158 km N of Calama, Chile on January 8, 2023 at 20:23 UTC had a depth of 128.4 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: us7000j314). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, January 8, 2023). M4.3 Earthquake 158 km N of Calama, Chile — January 8, 2023. Retrieved March 20, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000j314/