M4.4 Earthquake 80 km S of Attu Station, Alaska — December 1, 2023
2023-12-01 17:54:40 UTC (2023-12-01) · approx. 5:54 AM UTC+12 local
On December 1, 2023 at 17:54 UTC, a magnitude 4.4 shallow crustal earthquake struck 80 km S of Attu Station, Alaska, at a depth of 29.2 km and coordinates 52.1205°, 173.2602°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
173.2602°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Attu Station, Alaska?
The magnitude 4.4 earthquake that struck 80 km S of Attu Station, Alaska on December 1, 2023 at 17:54 UTC had a depth of 29.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000lf75). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 1, 2023). M4.4 Earthquake 80 km S of Attu Station, Alaska — December 1, 2023. Retrieved February 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lf75/