M3.1 Earthquake 58 km WNW of Nanwalek, Alaska — November 1, 2021
2021-11-01 18:09:53 UTC (2021-11-01) · approx. 8:09 AM UTC-10 local
On November 1, 2021 at 18:09 UTC, a magnitude 3.1 intermediate depth earthquake struck 58 km WNW of Nanwalek, Alaska, at a depth of 96.7 km and coordinates 59.4866°, -152.9261°.
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
-152.9261°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Nanwalek, Alaska?
The magnitude 3.1 earthquake that struck 58 km WNW of Nanwalek, Alaska on November 1, 2021 at 18:09 UTC had a depth of 96.7 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: ak021e0poozq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 1, 2021). M3.1 Earthquake 58 km WNW of Nanwalek, Alaska — November 1, 2021. Retrieved January 14, 2022 from https://www.earthquaketracker.org/earthquakes/event/ak021e0poozq/