M3.0 Earthquake 36 km SE of Pedro Bay, Alaska — October 11, 2020
2020-10-11 22:28:08 UTC (2020-10-11) · approx. 12:28 PM UTC-10 local
On October 11, 2020 at 22:28 UTC, a magnitude 3.0 intermediate depth earthquake struck 36 km SE of Pedro Bay, Alaska, at a depth of 113.1 km and coordinates 59.5808°, -153.5985°.
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
-153.5985°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Pedro Bay, Alaska?
The magnitude 3.0 earthquake that struck 36 km SE of Pedro Bay, Alaska on October 11, 2020 at 22:28 UTC had a depth of 113.1 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: ak020d3pfgna). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, October 11, 2020). M3.0 Earthquake 36 km SE of Pedro Bay, Alaska — October 11, 2020. Retrieved December 19, 2020 from https://www.earthquaketracker.org/earthquakes/event/ak020d3pfgna/