M4.3 Earthquake 36 km WSW of Desaguadero, Peru — October 9, 2023
2023-10-09 18:13:20 UTC (2023-10-09) · approx. 1:13 PM UTC-5 local
On October 9, 2023 at 18:13 UTC, a magnitude 4.3 intermediate depth earthquake struck 36 km WSW of Desaguadero, Peru, at a depth of 203.1 km and coordinates -16.7196°, -69.3441°.
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
-69.3441°E
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Common Questions
How strong was the magnitude 4.3 earthquake near Desaguadero, Peru?
The magnitude 4.3 earthquake that struck 36 km WSW of Desaguadero, Peru on October 9, 2023 at 18:13 UTC had a depth of 203.1 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: us6000lf5n). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 9, 2023). M4.3 Earthquake 36 km WSW of Desaguadero, Peru — October 9, 2023. Retrieved December 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lf5n/