M4.2 Earthquake 91 km SE of Akutan, Alaska — June 8, 2020
2020-06-08 18:57:02 UTC (2020-06-08) · approx. 7:57 AM UTC-11 local
On June 8, 2020 at 18:57 UTC, a magnitude 4.2 shallow crustal earthquake struck 91 km SE of Akutan, Alaska, at a depth of 21.2 km and coordinates 53.5653°, -164.7631°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-164.7631°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Akutan, Alaska?
The magnitude 4.2 earthquake that struck 91 km SE of Akutan, Alaska on June 8, 2020 at 18:57 UTC had a depth of 21.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000a83s). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, June 8, 2020). M4.2 Earthquake 91 km SE of Akutan, Alaska — June 8, 2020. Retrieved August 18, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000a83s/