M3.2 Earthquake 52 km WNW of Aleneva, Alaska — June 28, 2021
2021-06-28 20:54:34 UTC (2021-06-28) · approx. 10:54 AM UTC-10 local
On June 28, 2021 at 20:54 UTC, a magnitude 3.2 intermediate depth earthquake struck 52 km WNW of Aleneva, Alaska, at a depth of 77.6 km and coordinates 58.2238°, -153.7463°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 951 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 97 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-153.7463°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Aleneva, Alaska?
The magnitude 3.2 earthquake that struck 52 km WNW of Aleneva, Alaska on June 28, 2021 at 20:54 UTC had a depth of 77.6 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak02188dffte). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 28, 2021). M3.2 Earthquake 52 km WNW of Aleneva, Alaska — June 28, 2021. Retrieved September 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/ak02188dffte/