M4.1 Earthquake 101 km WNW of Iquique, Chile — November 1, 2020
2020-11-01 21:45:51 UTC (2020-11-01) · approx. 4:45 PM UTC-5 local
On November 1, 2020 at 21:45 UTC, a magnitude 4.1 shallow crustal earthquake struck 101 km WNW of Iquique, Chile, at a depth of 11.4 km and coordinates -19.9522°, -71.0781°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-71.0781°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Iquique, Chile?
The magnitude 4.1 earthquake that struck 101 km WNW of Iquique, Chile on November 1, 2020 at 21:45 UTC had a depth of 11.4 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000c927). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, November 1, 2020). M4.1 Earthquake 101 km WNW of Iquique, Chile — November 1, 2020. Retrieved January 18, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000c927/