M3.2 Earthquake 118 km WNW of Adak, Alaska — April 13, 2023
2023-04-13 16:39:14 UTC (2023-04-13) · approx. 4:39 AM UTC-12 local
On April 13, 2023 at 16:39 UTC, a magnitude 3.2 intermediate depth earthquake struck 118 km WNW of Adak, Alaska, at a depth of 197.9 km and coordinates 52.2160°, -178.2652°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 951 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 97 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-178.2652°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Adak, Alaska?
The magnitude 3.2 earthquake that struck 118 km WNW of Adak, Alaska on April 13, 2023 at 16:39 UTC had a depth of 197.9 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000k5l6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 13, 2023). M3.2 Earthquake 118 km WNW of Adak, Alaska — April 13, 2023. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000k5l6/