M4.2 Earthquake 11 km SW of Orcopampa, Peru — October 23, 2023
2023-10-23 21:20:39 UTC (2023-10-23) · approx. 4:20 PM UTC-5 local
On October 23, 2023 at 21:20 UTC, a magnitude 4.2 intermediate depth earthquake struck 11 km SW of Orcopampa, Peru, at a depth of 121.2 km and coordinates -15.3290°, -72.4234°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-72.4234°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Orcopampa, Peru?
The magnitude 4.2 earthquake that struck 11 km SW of Orcopampa, Peru on October 23, 2023 at 21:20 UTC had a depth of 121.2 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000l6vk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 23, 2023). M4.2 Earthquake 11 km SW of Orcopampa, Peru — October 23, 2023. Retrieved January 4, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000l6vk/