M4.0 Earthquake 140 km SE of Akutan, Alaska — June 16, 2020
2020-06-16 21:59:07 UTC (2020-06-16) · approx. 10:59 AM UTC-11 local
On June 16, 2020 at 21:59 UTC, a magnitude 4.0 shallow crustal earthquake struck 140 km SE of Akutan, Alaska, at a depth of 10.0 km and coordinates 53.2567°, -164.2428°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-164.2428°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Akutan, Alaska?
The magnitude 4.0 earthquake that struck 140 km SE of Akutan, Alaska on June 16, 2020 at 21:59 UTC had a depth of 10.0 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 4.0 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000ad3y). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, June 16, 2020). M4.0 Earthquake 140 km SE of Akutan, Alaska — June 16, 2020. Retrieved August 22, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000ad3y/