M4.3 Earthquake 149 km ESE of Iquique, Chile — December 13, 2020
2020-12-13 22:16:07 UTC (2020-12-13) · approx. 5:16 PM UTC-5 local
On December 13, 2020 at 22:16 UTC, a magnitude 4.3 intermediate depth earthquake struck 149 km ESE of Iquique, Chile, at a depth of 103.8 km and coordinates -20.8094°, -68.8624°.
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
-68.8624°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Iquique, Chile?
The magnitude 4.3 earthquake that struck 149 km ESE of Iquique, Chile on December 13, 2020 at 22:16 UTC had a depth of 103.8 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 4.3 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: us7000cqv1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 13, 2020). M4.3 Earthquake 149 km ESE of Iquique, Chile — December 13, 2020. Retrieved February 20, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cqv1/