M4.3 Earthquake 9 km NW of Carhuamayo, Peru — October 18, 2023
2023-10-18 21:15:05 UTC (2023-10-18) · approx. 4:15 PM UTC-5 local
On October 18, 2023 at 21:15 UTC, a magnitude 4.3 intermediate depth earthquake struck 9 km NW of Carhuamayo, Peru, at a depth of 101.8 km and coordinates -10.8471°, -76.0854°.
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
-76.0854°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Carhuamayo, Peru?
The magnitude 4.3 earthquake that struck 9 km NW of Carhuamayo, Peru on October 18, 2023 at 21:15 UTC had a depth of 101.8 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.
Actions
Location
Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000lggm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 18, 2023). M4.3 Earthquake 9 km NW of Carhuamayo, Peru — October 18, 2023. Retrieved December 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lggm/