Alaska earthquakes

M3.6 earthquake 166 km SE of Akutan, Alaska

A magnitude 3.6 earthquake struck 166 km SE of Akutan, Alaska on Fri, Mar 23, 2018, 12:44 PM AKDT (20:44 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M4.6 155 km S of False Pass, Alaska. This one was a foreshock.

Akutan 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: Fri, Mar 23, 2018, 12:44 PM AKDT
UTC: 2018-03-23 20:44:36 UTC
Depth: 23.2 km (14.4 mi), shallow
Epicenter: 53.069° N, 164.002° 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 4.1 km horizontally, 4.9 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 203°, poorly surrounded by stations
Stations used: 155

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast166 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 114 in the 60 days after this one and 26 in the 30 days before it.

After

The first 60 of 114.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000d8b5 (also filed as ak0183ry8mvj, ak18742674). Read Wed, Sep 30, 2026, 11:53 PM UTC.