M3.0 Earthquake 25 km NW of Nelson Lagoon, Alaska — February 17, 2023
2023-02-17 20:23:05 UTC (2023-02-17) · approx. 9:23 AM UTC-11 local
On February 17, 2023 at 20:23 UTC, a magnitude 3.0 intermediate depth earthquake struck 25 km NW of Nelson Lagoon, Alaska, at a depth of 171.7 km and coordinates 56.1727°, -161.4650°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-161.4650°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Nelson Lagoon, Alaska?
The magnitude 3.0 earthquake that struck 25 km NW of Nelson Lagoon, Alaska on February 17, 2023 at 20:23 UTC had a depth of 171.7 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000jps0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, February 17, 2023). M3.0 Earthquake 25 km NW of Nelson Lagoon, Alaska — February 17, 2023. Retrieved April 22, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jps0/