M3.1 Earthquake 47 km WNW of Cold Bay, Alaska — July 14, 2022
2022-07-14 21:37:05 UTC (2022-07-14) · approx. 10:37 AM UTC-11 local
On July 14, 2022 at 21:37 UTC, a magnitude 3.1 intermediate depth earthquake struck 47 km WNW of Cold Bay, Alaska, at a depth of 173.3 km and coordinates 55.2966°, -163.4449°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-163.4449°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Cold Bay, Alaska?
The magnitude 3.1 earthquake that struck 47 km WNW of Cold Bay, Alaska on July 14, 2022 at 21:37 UTC had a depth of 173.3 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000i2ih). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 14, 2022). M3.1 Earthquake 47 km WNW of Cold Bay, Alaska — July 14, 2022. Retrieved September 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i2ih/