M3.8 Earthquake 94 km E of Atka, Alaska — May 25, 2023
2023-05-25 22:19:58 UTC (2023-05-25) · approx. 10:19 AM UTC-12 local
On May 25, 2023 at 22:19 UTC, a magnitude 3.8 intermediate depth earthquake struck 94 km E of Atka, Alaska, at a depth of 209.1 km and coordinates 52.3526°, -172.8345°.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-172.8345°E
Technical Information
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Common Questions
How strong was the magnitude 3.8 earthquake near Atka, Alaska?
The magnitude 3.8 earthquake that struck 94 km E of Atka, Alaska on May 25, 2023 at 22:19 UTC had a depth of 209.1 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 3.8 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000k442). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 25, 2023). M3.8 Earthquake 94 km E of Atka, Alaska — May 25, 2023. Retrieved July 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k442/