M3.4 Earthquake 115 km SE of Akhiok, Alaska — August 28, 2020
2020-08-28 15:44:04 UTC (2020-08-28) · approx. 5:44 AM UTC-10 local
On August 28, 2020 at 15:44 UTC, a magnitude 3.4 shallow crustal earthquake struck 115 km SE of Akhiok, Alaska, at a depth of 7.2 km and coordinates 56.1122°, -153.0466°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.9 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 134 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-153.0466°E
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Common Questions
How strong was the magnitude 3.4 earthquake near Akhiok, Alaska?
The magnitude 3.4 earthquake that struck 115 km SE of Akhiok, Alaska on August 28, 2020 at 15:44 UTC had a depth of 7.2 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 3.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.4 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak020b2tpkpg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, August 28, 2020). M3.4 Earthquake 115 km SE of Akhiok, Alaska — August 28, 2020. Retrieved November 7, 2020 from https://www.earthquaketracker.org/earthquakes/event/ak020b2tpkpg/