Alaska earthquakes

M3.6 earthquake 76 km NE of Nikolski, Alaska

A magnitude 3.6 earthquake struck 76 km NE of Nikolski, Alaska on Sun, Sep 8, 2019, 10:50 PM AKDT (06:50 UTC), 109 km (68 mi) below the surface.

A larger quake followed: M3.9 118 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: 3.6 (mb), minor
Local time: Sun, Sep 8, 2019, 10:50 PM AKDT
UTC: 2019-09-09 06:50:24 UTC
Depth: 109.0 km (67.7 mi), intermediate-depth
Epicenter: 53.391° N, 167.998° 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 9.1 km horizontally, 5.8 km in depth
Magnitude uncertainty: ±0.16
Depth from: From location
Station coverage gap: 163°
Stations used: 49

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast110 kmWSW

Nearby

Within 100 km, magnitude 1.5 and up: 61 in the 60 days after this one and 34 in the 30 days before it.

After

The first 60 of 61.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60005m7p (also filed as ak019bkvatsw). Read Wed, Sep 30, 2026, 9:06 AM UTC.