Alaska earthquakes

M2.9 earthquake 88 km S of Unalaska, Alaska

A magnitude 2.9 earthquake struck 88 km S of Unalaska, Alaska on Sat, Nov 27, 2021, 10:47 PM AKST (07:47 UTC), 61 km (38 mi) below the surface.

A larger quake followed: M3.2 116 km S 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: 2.9 (ml), micro
Local time: Sat, Nov 27, 2021, 10:47 PM AKST
UTC: 2021-11-28 07:47:51 UTC
Depth: 61.4 km (38.2 mi), shallow
Epicenter: 53.082° N, 166.466° 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 7.9 km horizontally, 21.6 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 199°, poorly surrounded by stations
Stations used: 42

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast88 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 10 in the 30 days before it.

After

The first 60 of 189.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000g7uz (also filed as ak021f96vg2a). Read Wed, Sep 23, 2026, 5:40 AM UTC.