M4.0 Earthquake 152 km SSW of Akhiok, Alaska — November 14, 2022
2022-11-14 20:20:00 UTC (2022-11-14) · approx. 10:20 AM UTC-10 local
On November 14, 2022 at 20:20 UTC, a magnitude 4.0 shallow crustal earthquake struck 152 km SSW of Akhiok, Alaska, at a depth of 10.0 km and coordinates 55.7140°, -155.2602°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Earthquake Details
-155.2602°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Akhiok, Alaska?
The magnitude 4.0 earthquake that struck 152 km SSW of Akhiok, Alaska on November 14, 2022 at 20:20 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: ak022em8x7yr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, November 14, 2022). M4.0 Earthquake 152 km SSW of Akhiok, Alaska — November 14, 2022. Retrieved January 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak022em8x7yr/