Alaska earthquakes

M1.6 earthquake 71 km WSW of Unalaska, Alaska

A magnitude 1.6 earthquake struck 71 km WSW of Unalaska, Alaska on Wed, Sep 13, 2017, 1:55 PM AKDT (21:55 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M4.7 83 km ENE of Nikolski, Alaska. This one was a foreshock.

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: 1.6 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Wed, Sep 13, 2017, 1:55 PM AKDT
UTC: 2017-09-13 21:55:27 UTC
Depth: 11.2 km (7.0 mi), shallow
Epicenter: 53.539° N, 167.453° 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.

Stations used: 20

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast71 kmWSW

Nearby

Within 100 km, magnitude 1.5 and up: 64 in the 60 days after this one and 45 in the 30 days before it.

After

The first 60 of 64.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017brqesld (also filed as ak16830574). Read Thu, Oct 1, 2026, 11:40 PM UTC.