M3.8 Earthquake near Rat Islands, Aleutian Islands, Alaska — December 30, 2023
2023-12-30 21:06:39 UTC (2023-12-30) · approx. 9:06 AM UTC+12 local
On December 30, 2023 at 21:06 UTC, a magnitude 3.8 shallow crustal earthquake struck near Rat Islands, Aleutian Islands, Alaska, at a depth of 56.7 km and coordinates 51.3415°, 179.1000°.
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
179.1000°E
Technical Information
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Common Questions
How strong was the magnitude 3.8 earthquake near Rat Islands, Aleutian Islands, Alaska?
The magnitude 3.8 earthquake that struck near Rat Islands, Aleutian Islands, Alaska on December 30, 2023 at 21:06 UTC had a depth of 56.7 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: us6000m2rx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 30, 2023). M3.8 Earthquake near Rat Islands, Aleutian Islands, Alaska — December 30, 2023. Retrieved March 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000m2rx/