M3.5 Earthquake 67 km SSW of Cordova, Alaska — September 9, 2024
2024-09-09 16:55:40 UTC (2024-09-09) · approx. 6:55 AM UTC-10 local
On September 9, 2024 at 16:55 UTC, a magnitude 3.5 shallow crustal earthquake struck 67 km SSW of Cordova, Alaska, at a depth of 30.3 km and coordinates 59.9900°, -146.2506°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-146.2506°E
Technical Information
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Common Questions
How strong was the magnitude 3.5 earthquake near Cordova, Alaska?
The magnitude 3.5 earthquake that struck 67 km SSW of Cordova, Alaska on September 9, 2024 at 16:55 UTC had a depth of 30.3 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000nqpb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, September 9, 2024). M3.5 Earthquake 67 km SSW of Cordova, Alaska — September 9, 2024. Retrieved November 21, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000nqpb/