Alaska earthquakes

M4.4 earthquake 27 km S of Unalaska, Alaska

A magnitude 4.4 earthquake struck 27 km S of Unalaska, Alaska on Thu, Apr 16, 2020, 12:12 AM AKDT (08:12 UTC), 75 km (47 mi) below the surface.

Unalaska 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: 4.4 (mb), light
Local time: Thu, Apr 16, 2020, 12:12 AM AKDT
UTC: 2020-04-16 08:12:37 UTC
Depth: 75.0 km (46.6 mi), intermediate-depth
Epicenter: 53.633° N, 166.457° 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 6.4 km horizontally, 4.4 km in depth
Magnitude uncertainty: ±0.11
Depth from: From location
Station coverage gap: 155°
Stations used: 78

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast27 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 61 in the 60 days after this one and 31 in the 30 days before it.

After

The first 60 of 61.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008xeh (also filed as ak0204x3c97k). Read Wed, Sep 30, 2026, 2:23 AM UTC.