M3.3 Earthquake 164 km WSW of Nikolski, Alaska — December 11, 2023
2023-12-11 18:40:59 UTC (2023-12-11) · approx. 7:40 AM UTC-11 local
On December 11, 2023 at 18:40 UTC, a magnitude 3.3 intermediate depth earthquake struck 164 km WSW of Nikolski, Alaska, at a depth of 72.9 km and coordinates 52.2704°, -171.0349°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-171.0349°E
Technical Information
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Common Questions
How strong was the magnitude 3.3 earthquake near Nikolski, Alaska?
The magnitude 3.3 earthquake that struck 164 km WSW of Nikolski, Alaska on December 11, 2023 at 18:40 UTC had a depth of 72.9 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 3.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000ll72). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 11, 2023). M3.3 Earthquake 164 km WSW of Nikolski, Alaska — December 11, 2023. Retrieved February 17, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000ll72/