Alaska earthquakes

M3.3 earthquake 86 km SSW of Unalaska, Alaska

A magnitude 3.3 earthquake struck 86 km SSW of Unalaska, Alaska on Wed, Aug 17, 2022, 8:07 AM AKDT (16:07 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.7 83 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: 3.3 (ml), minor
Local time: Wed, Aug 17, 2022, 8:07 AM AKDT
UTC: 2022-08-17 16:07:58 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 53.112° N, 166.809° 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 2.7 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 223°, poorly surrounded by stations
Stations used: 16

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast87 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 143 in the 60 days after this one and 78 in the 30 days before it.

After

The first 60 of 143.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000ip1r (also filed as ak022aizn115). Read Tue, Sep 29, 2026, 2:20 PM UTC.