M4.4 Earthquake 19 km NNW of Lloque, Peru — September 28, 2021
2021-09-28 20:50:46 UTC (2021-09-28) · approx. 3:50 PM UTC-5 local
On September 28, 2021 at 20:50 UTC, a magnitude 4.4 intermediate depth earthquake struck 19 km NNW of Lloque, Peru, at a depth of 143.5 km and coordinates -16.1769°, -70.8152°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-70.8152°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Lloque, Peru?
The magnitude 4.4 earthquake that struck 19 km NNW of Lloque, Peru on September 28, 2021 at 20:50 UTC had a depth of 143.5 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000fqtn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 28, 2021). M4.4 Earthquake 19 km NNW of Lloque, Peru — September 28, 2021. Retrieved December 4, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fqtn/