Alaska earthquakes

M2.4 earthquake 81 km SW of Nikolski, Alaska

A magnitude 2.4 earthquake struck 81 km SW of Nikolski, Alaska on Thu, Sep 22, 2016, 8:03 PM AKDT (04:03 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M4.6 42 km NW of Nikolski, 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: 2.4 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Thu, Sep 22, 2016, 8:03 PM AKDT
UTC: 2016-09-23 04:03:38 UTC
Depth: 20.2 km (12.6 mi), shallow
Epicenter: 52.399° N, 169.665° 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.

Stations used: 16

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast266 kmSW

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 32 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016c9mw4e4 (also filed as ak14071307). Read Sat, Oct 3, 2026, 11:37 PM UTC.