Alaska earthquakes

M4.0 earthquake 140 km SE of Akutan, Alaska

A magnitude 4.0 earthquake struck 140 km SE of Akutan, Alaska on Tue, Jun 16, 2020, 1:59 PM AKDT (21:59 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.7 156 km ESE of Akutan, Alaska. This one was a foreshock.

Akutan forecast More in Alaska

Map

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

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The earthquake

Magnitude: 4.0 (mb), light
Local time: Tue, Jun 16, 2020, 1:59 PM AKDT
UTC: 2020-06-16 21:59:07 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 53.257° N, 164.243° 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 3.7 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 177°
Stations used: 81

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast140 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 117 in the 60 days after this one and 38 in the 30 days before it.

After

The first 60 of 117.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000ad3y (also filed as ak0207q752qr). Read Wed, Sep 30, 2026, 9:45 PM UTC.