M3.2 Earthquake 43 km ESE of Akutan, Alaska — December 21, 2020
2020-12-21 17:54:24 UTC (2020-12-21) · approx. 6:54 AM UTC-11 local
On December 21, 2020 at 17:54 UTC, a magnitude 3.2 intermediate depth earthquake struck 43 km ESE of Akutan, Alaska, at a depth of 75.0 km and coordinates 54.0051°, -165.1429°.
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
-165.1429°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.2 earthquake near Akutan, Alaska?
The magnitude 3.2 earthquake that struck 43 km ESE of Akutan, Alaska on December 21, 2020 at 17:54 UTC had a depth of 75.0 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 3.2 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000d4am). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 21, 2020). M3.2 Earthquake 43 km ESE of Akutan, Alaska — December 21, 2020. Retrieved February 27, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000d4am/