M3.4 Earthquake 27 km SSW of Nikolski, Alaska — May 20, 2022
2022-05-20 18:53:05 UTC (2022-05-20) · approx. 7:53 AM UTC-11 local
On May 20, 2022 at 18:53 UTC, a magnitude 3.4 shallow crustal earthquake struck 27 km SSW of Nikolski, Alaska, at a depth of 63.2 km and coordinates 52.7307°, -169.0759°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.9 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 134 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-169.0759°E
Technical Information
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Common Questions
How strong was the magnitude 3.4 earthquake near Nikolski, Alaska?
The magnitude 3.4 earthquake that struck 27 km SSW of Nikolski, Alaska on May 20, 2022 at 18:53 UTC had a depth of 63.2 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 3.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.4 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000hrx8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, May 20, 2022). M3.4 Earthquake 27 km SSW of Nikolski, Alaska — May 20, 2022. Retrieved July 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000hrx8/