M4.2 Earthquake in the Peru-Ecuador border region — September 18, 2023
2023-09-18 22:33:46 UTC (2023-09-18) · approx. 5:33 PM UTC-5 local
On September 18, 2023 at 22:33 UTC, a magnitude 4.2 shallow crustal earthquake struck in the Peru-Ecuador border region, at a depth of 10.0 km and coordinates -4.9012°, -80.9141°.
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
-80.9141°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake in the Peru-Ecuador border region?
The magnitude 4.2 earthquake that struck in the Peru-Ecuador border region on September 18, 2023 at 22:33 UTC had a depth of 10.0 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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Location
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000kxdw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 18, 2023). M4.2 Earthquake in the Peru-Ecuador border region — September 18, 2023. Retrieved December 2, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kxdw/