M3.0 Earthquake 120 km E of McCarthy, Alaska — July 10, 2023
2023-07-10 17:36:14 UTC (2023-07-10) · approx. 8:36 AM UTC-9 local
On July 10, 2023 at 17:36 UTC, a magnitude 3.0 shallow crustal earthquake struck 120 km E of McCarthy, Alaska, at a depth of 10.0 km and coordinates 61.4646°, -140.6709°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-140.6709°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near McCarthy, Alaska?
The magnitude 3.0 earthquake that struck 120 km E of McCarthy, Alaska on July 10, 2023 at 17:36 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000kens). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 10, 2023). M3.0 Earthquake 120 km E of McCarthy, Alaska — July 10, 2023. Retrieved September 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kens/