M3.4 Earthquake 24 km ENE of Healy, Alaska — August 22, 2023
2023-08-22 20:56:31 UTC (2023-08-22) · approx. 10:56 AM UTC-10 local
On August 22, 2023 at 20:56 UTC, a magnitude 3.4 intermediate depth earthquake struck 24 km ENE of Healy, Alaska, at a depth of 104.2 km and coordinates 63.9198°, -148.4781°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.9 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 134 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-148.4781°E
Technical Information
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Common Questions
How strong was the magnitude 3.4 earthquake near Healy, Alaska?
The magnitude 3.4 earthquake that struck 24 km ENE of Healy, Alaska on August 22, 2023 at 20:56 UTC had a depth of 104.2 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 3.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.4 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak023arbzy7x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 22, 2023). M3.4 Earthquake 24 km ENE of Healy, Alaska — August 22, 2023. Retrieved October 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak023arbzy7x/