M3.7 Earthquake 61 km WNW of Nanwalek, Alaska — September 17, 2022
2022-09-17 22:08:35 UTC (2022-09-17) · approx. 12:08 PM UTC-10 local
On September 17, 2022 at 22:08 UTC, a magnitude 3.7 intermediate depth earthquake struck 61 km WNW of Nanwalek, Alaska, at a depth of 88.4 km and coordinates 59.5404°, -152.9447°.
Physical scale: An earthquake of magnitude 3.7 releases seismic energy equivalent to roughly 5.4 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 215 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-152.9447°E
Technical Information
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Common Questions
How strong was the magnitude 3.7 earthquake near Nanwalek, Alaska?
The magnitude 3.7 earthquake that struck 61 km WNW of Nanwalek, Alaska on September 17, 2022 at 22:08 UTC had a depth of 88.4 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 3.7 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.7 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak022bycvk4h). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 17, 2022). M3.7 Earthquake 61 km WNW of Nanwalek, Alaska — September 17, 2022. Retrieved November 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/ak022bycvk4h/