M3.8 Earthquake 128 km SSW of Adak, Alaska — December 14, 2024
2024-12-14 21:55:14 UTC (2024-12-14) · approx. 9:55 AM UTC-12 local
On December 14, 2024 at 21:55 UTC, a magnitude 3.8 shallow crustal earthquake struck 128 km SSW of Adak, Alaska, at a depth of 10.0 km and coordinates 50.8818°, -177.5698°.
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
-177.5698°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.8 earthquake near Adak, Alaska?
The magnitude 3.8 earthquake that struck 128 km SSW of Adak, Alaska on December 14, 2024 at 21:55 UTC had a depth of 10.0 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.
Actions
Understanding This Data
Magnitude 3.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000ph72). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, December 14, 2024). M3.8 Earthquake 128 km SSW of Adak, Alaska — December 14, 2024. Retrieved February 18, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000ph72/