M4.0 Earthquake 234 km SW of Nikolski, Alaska — January 25, 2022
2022-01-25 22:52:43 UTC (2022-01-25) · approx. 11:52 AM UTC-11 local
On January 25, 2022 at 22:52 UTC, a magnitude 4.0 shallow crustal earthquake struck 234 km SW of Nikolski, Alaska, at a depth of 10.0 km and coordinates 51.2464°, -170.9081°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-170.9081°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Nikolski, Alaska?
The magnitude 4.0 earthquake that struck 234 km SW of Nikolski, Alaska on January 25, 2022 at 22:52 UTC had a depth of 10.0 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000gf61). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 25, 2022). M4.0 Earthquake 234 km SW of Nikolski, Alaska — January 25, 2022. Retrieved April 9, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gf61/