M3.0 Earthquake 80 km ESE of Akutan, Alaska — March 27, 2021
2021-03-27 23:39:19 UTC (2021-03-27) · approx. 12:39 PM UTC-11 local
On March 27, 2021 at 23:39 UTC, a magnitude 3.0 shallow crustal earthquake struck 80 km ESE of Akutan, Alaska, at a depth of 27.4 km and coordinates 53.8286°, -164.6690°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-164.6690°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Akutan, Alaska?
The magnitude 3.0 earthquake that struck 80 km ESE of Akutan, Alaska on March 27, 2021 at 23:39 UTC had a depth of 27.4 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000e48i). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 27, 2021). M3.0 Earthquake 80 km ESE of Akutan, Alaska — March 27, 2021. Retrieved June 8, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e48i/