Alaska earthquakes

M3.8 earthquake 152 km ESE of Akutan, Alaska

A magnitude 3.8 earthquake struck 152 km ESE of Akutan, Alaska on Fri, Aug 14, 2020, 8:12 PM AKDT (04:12 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.5 151 km S of False Pass, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.8 (mb), minor
Local time
UTC
2020-08-15 04:12:23 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
53.466° N, 163.754° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 7.0 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
212°, poorly surrounded by stations
Stations used
59

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 80 in the 60 days after this one and 73 in the 30 days before it.

After

The first 60 of 80.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bf2g (also filed as ak020ah4zhoq). Read Sun, Sep 27, 2026, 5:47 AM UTC.