M4.2 Earthquake 139 km SW of Santiago de Cao, Peru — September 22, 2022
2022-09-22 23:10:06 UTC (2022-09-22) · approx. 6:10 PM UTC-5 local
On September 22, 2022 at 23:10 UTC, a magnitude 4.2 shallow crustal earthquake struck 139 km SW of Santiago de Cao, Peru, at a depth of 21.0 km and coordinates -8.7481°, -80.2239°.
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
-80.2239°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Santiago de Cao, Peru?
The magnitude 4.2 earthquake that struck 139 km SW of Santiago de Cao, Peru on September 22, 2022 at 23:10 UTC had a depth of 21.0 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: us6000ip16). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 22, 2022). M4.2 Earthquake 139 km SW of Santiago de Cao, Peru — September 22, 2022. Retrieved November 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000ip16/