M4.3 Earthquake 51 km SSW of Andalgalá, Argentina — November 15, 2020
2020-11-15 21:54:52 UTC (2020-11-15) · approx. 5:54 PM UTC-4 local
On November 15, 2020 at 21:54 UTC, a magnitude 4.3 intermediate depth earthquake struck 51 km SSW of Andalgalá, Argentina, at a depth of 160.9 km and coordinates -27.9782°, -66.5878°.
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
-66.5878°E
Technical Information
Common Questions
How strong was the magnitude 4.3 earthquake near Andalgalá, Argentina?
The magnitude 4.3 earthquake that struck 51 km SSW of Andalgalá, Argentina on November 15, 2020 at 21:54 UTC had a depth of 160.9 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: us7000cfe5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, November 15, 2020). M4.3 Earthquake 51 km SSW of Andalgalá, Argentina — November 15, 2020. Retrieved January 27, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cfe5/