M5.3 Earthquake 216 km SE of Akutan, Alaska — October 16, 2024
2024-10-16 09:40:00 UTC (2024-10-16) · approx. 10:40 PM UTC-11 local
On October 16, 2024 at 09:40 UTC, a magnitude 5.3 shallow crustal earthquake struck 216 km SE of Akutan, Alaska, at a depth of 10.0 km and coordinates 52.7367°, -163.5125°. This earthquake was detected by 217 seismic stations with good location accuracy and was assigned a USGS significance rating of 432, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.3 releases seismic energy equivalent to roughly 1 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.7 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Alaska, a region characterized by Pacific Plate subduction beneath the North American Plate, producing frequent megathrust and crustal earthquakes along the Aleutian arc. The nearest mapped fault system is the Aleutian megathrust. View all earthquakes in Alaska.
Learn more: Magnitude scale · Aftershock sequences
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Earthquake Details
-163.5125°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.3 earthquake near Akutan, Alaska?
The magnitude 5.3 earthquake that struck 216 km SE of Akutan, Alaska on October 16, 2024 at 09:40 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 52.7367°, -163.5125°, which is 216 km SE of Akutan, Alaska. View all earthquakes in Alaska.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.3 earthquakes can continue for days to weeks and gradually diminish over time.
Has Alaska had earthquakes this big before?
The largest recorded earthquake in Alaska was the M9.2 Great Alaska earthquake of March 27, 1964. Today's magnitude 5.3 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000nz0p). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, October 16, 2024). M5.3 Earthquake 216 km SE of Akutan, Alaska — October 16, 2024. Retrieved July 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000nz0p/