Alaska earthquakes

M3.5 earthquake 61 km SSW of Unalaska, Alaska

A magnitude 3.5 earthquake struck 61 km SSW of Unalaska, Alaska on Thu, Aug 13, 2026, 7:10 PM AKDT (03:10 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.0 92 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: 3.5 (mb), minor
Local time: Thu, Aug 13, 2026, 7:10 PM AKDT
UTC: 2026-08-14 03:10:51 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 53.387° N, 166.982° W
Region: Alaska
Felt reports: 5
Strongest shaking: IV, light shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: IV, light shaking
Peak ground acceleration: 3.7% of gravity
Peak ground velocity: 1.1 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

5 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.4 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.15
Depth from: Operator assigned
Station coverage gap: 158°
Stations used: 31

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast62 kmSSW

Nearby

Within 100 km, magnitude 1.5 and up: 112 since this one and 66 in the 30 days before it.

After

The first 60 of 112.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000tkx4 (also filed as aka2026pzvhjk). Read Mon, Sep 28, 2026, 6:42 AM UTC.