M3.0 Earthquake 41 km ENE of Port Alsworth, Alaska — July 23, 2022
2022-07-23 20:53:29 UTC (2022-07-23) · approx. 10:53 AM UTC-10 local
On July 23, 2022 at 20:53 UTC, a magnitude 3.0 intermediate depth earthquake struck 41 km ENE of Port Alsworth, Alaska, at a depth of 185.5 km and coordinates 60.3222°, -153.6028°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-153.6028°E
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Common Questions
How strong was the magnitude 3.0 earthquake near Port Alsworth, Alaska?
The magnitude 3.0 earthquake that struck 41 km ENE of Port Alsworth, Alaska on July 23, 2022 at 20:53 UTC had a depth of 185.5 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak0229dpuw1k). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 23, 2022). M3.0 Earthquake 41 km ENE of Port Alsworth, Alaska — July 23, 2022. Retrieved October 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/ak0229dpuw1k/