Alaska earthquakes

M3.1 earthquake 28 km SE of Unalaska, Alaska

A magnitude 3.1 earthquake struck 28 km SE of Unalaska, Alaska on Tue, Feb 15, 2022, 3:03 PM AKST (00:03 UTC), 75 km (46 mi) below the surface.

A larger quake followed: M5.1 82 km SSW of Unalaska, 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: 3.1 (ml), minor
Local time: Tue, Feb 15, 2022, 3:03 PM AKST
UTC: 2022-02-16 00:03:21 UTC
Depth: 74.8 km (46.5 mi), intermediate-depth
Epicenter: 53.717° N, 166.193° 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 10.9 km horizontally, 18.1 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 189°, poorly surrounded by stations
Stations used: 27

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast28 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 178 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000h4tz (also filed as ak02225q9zxb). Read Mon, Sep 28, 2026, 10:19 AM UTC.