M3.5 Earthquake 68 km W of Nikolski, Alaska — March 26, 2021
2021-03-26 20:47:12 UTC (2021-03-26) · approx. 9:47 AM UTC-11 local
On March 26, 2021 at 20:47 UTC, a magnitude 3.5 shallow crustal earthquake struck 68 km W of Nikolski, Alaska, at a depth of 2.9 km and coordinates 52.8910°, -169.8708°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-169.8708°E
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Common Questions
How strong was the magnitude 3.5 earthquake near Nikolski, Alaska?
The magnitude 3.5 earthquake that struck 68 km W of Nikolski, Alaska on March 26, 2021 at 20:47 UTC had a depth of 2.9 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000dwwe). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 26, 2021). M3.5 Earthquake 68 km W of Nikolski, Alaska — March 26, 2021. Retrieved June 8, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dwwe/