Alaska earthquakes

M2.3 earthquake 17 km S of Unalaska, Alaska

A magnitude 2.3 earthquake struck 17 km S of Unalaska, Alaska on Tue, Jul 25, 2017, 1:54 AM AKDT (09:54 UTC), 91 km (57 mi) below the surface.

A larger quake followed: M4.8 37 km ESE of Akutan, 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: 2.3 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Jul 25, 2017, 1:54 AM AKDT
UTC: 2017-07-25 09:54:13 UTC
Depth: 91.0 km (56.5 mi), intermediate-depth
Epicenter: 53.715° N, 166.560° 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: 33

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast18 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 114 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of 114.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0179gudzue (also filed as ak16375710). Read Sun, Oct 4, 2026, 11:49 PM UTC.