M3.2 Earthquake 12 km NW of Noatak, Alaska — March 14, 2021
2021-03-14 16:41:49 UTC (2021-03-14) · approx. 5:41 AM UTC-11 local
On March 14, 2021 at 16:41 UTC, a magnitude 3.2 shallow crustal earthquake struck 12 km NW of Noatak, Alaska, at a depth of 7.3 km and coordinates 67.6459°, -163.1885°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 951 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 97 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-163.1885°E
Technical Information
Common Questions
How strong was the magnitude 3.2 earthquake near Noatak, Alaska?
The magnitude 3.2 earthquake that struck 12 km NW of Noatak, Alaska on March 14, 2021 at 16:41 UTC had a depth of 7.3 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak0213d005sp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 14, 2021). M3.2 Earthquake 12 km NW of Noatak, Alaska — March 14, 2021. Retrieved May 26, 2021 from https://www.earthquaketracker.org/earthquakes/event/ak0213d005sp/