M3.1 Earthquake 201 km SSE of King Cove, Alaska — November 27, 2021
2021-11-27 19:48:58 UTC (2021-11-27) · approx. 8:48 AM UTC-11 local
On November 27, 2021 at 19:48 UTC, a magnitude 3.1 shallow crustal earthquake struck 201 km SSE of King Cove, Alaska, at a depth of 3.4 km and coordinates 53.3018°, -161.5849°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-161.5849°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near King Cove, Alaska?
The magnitude 3.1 earthquake that struck 201 km SSE of King Cove, Alaska on November 27, 2021 at 19:48 UTC had a depth of 3.4 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000g8gm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 27, 2021). M3.1 Earthquake 201 km SSE of King Cove, Alaska — November 27, 2021. Retrieved February 5, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000g8gm/