M3.5 Earthquake 99 km SE of Akutan, Alaska — August 19, 2020
2020-08-19 20:02:34 UTC (2020-08-19) · approx. 9:02 AM UTC-11 local
On August 19, 2020 at 20:02 UTC, a magnitude 3.5 shallow crustal earthquake struck 99 km SE of Akutan, Alaska, at a depth of 35.0 km and coordinates 53.4808°, -164.7508°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-164.7508°E
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Common Questions
How strong was the magnitude 3.5 earthquake near Akutan, Alaska?
The magnitude 3.5 earthquake that struck 99 km SE of Akutan, Alaska on August 19, 2020 at 20:02 UTC had a depth of 35.0 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000bheq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, August 19, 2020). M3.5 Earthquake 99 km SE of Akutan, Alaska — August 19, 2020. Retrieved October 31, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000bheq/