M3.3 Earthquake 57 km SSW of Unalaska, Alaska — March 10, 2022
2022-03-10 18:16:07 UTC (2022-03-10) · approx. 7:16 AM UTC-11 local
On March 10, 2022 at 18:16 UTC, a magnitude 3.3 shallow crustal earthquake struck 57 km SSW of Unalaska, Alaska, at a depth of 10.0 km and coordinates 53.4160°, -166.9213°.
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
-166.9213°E
Technical Information
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Common Questions
How strong was the magnitude 3.3 earthquake near Unalaska, Alaska?
The magnitude 3.3 earthquake that struck 57 km SSW of Unalaska, Alaska on March 10, 2022 at 18:16 UTC had a depth of 10.0 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: us7000h22b). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, March 10, 2022). M3.3 Earthquake 57 km SSW of Unalaska, Alaska — March 10, 2022. Retrieved May 14, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000h22b/