M4.3 Earthquake 40 km WNW of Añatuya, Argentina — December 3, 2022
2022-12-03 19:24:06 UTC (2022-12-03) · approx. 3:24 PM UTC-4 local
On December 3, 2022 at 19:24 UTC, a magnitude 4.3 deep-focus earthquake struck 40 km WNW of Añatuya, Argentina, at a depth of 574.4 km and coordinates -28.2964°, -63.2020°.
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
-63.2020°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Añatuya, Argentina?
The magnitude 4.3 earthquake that struck 40 km WNW of Añatuya, Argentina on December 3, 2022 at 19:24 UTC had a depth of 574.4 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: us6000j6qe). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, December 3, 2022). M4.3 Earthquake 40 km WNW of Añatuya, Argentina — December 3, 2022. Retrieved February 11, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000j6qe/