M3.9 Earthquake 80 km WNW of Vallenar, Chile — November 26, 2023
2023-11-26 18:52:31 UTC (2023-11-26) · approx. 1:52 PM UTC-5 local
On November 26, 2023 at 18:52 UTC, a magnitude 3.9 shallow crustal earthquake struck 80 km WNW of Vallenar, Chile, at a depth of 22.2 km and coordinates -28.3495°, -71.5434°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-71.5434°E
Technical Information
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Common Questions
How strong was the magnitude 3.9 earthquake near Vallenar, Chile?
The magnitude 3.9 earthquake that struck 80 km WNW of Vallenar, Chile on November 26, 2023 at 18:52 UTC had a depth of 22.2 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000lqwn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 26, 2023). M3.9 Earthquake 80 km WNW of Vallenar, Chile — November 26, 2023. Retrieved February 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000lqwn/