Alaska earthquakes

M4.1 earthquake 162 km S of False Pass, Alaska

A magnitude 4.1 earthquake struck 162 km S of False Pass, Alaska on Sun, May 27, 2018, 12:00 PM AKDT (20:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 152 km ESE of Akutan, 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: 4.1 (mb), light
Local time: Sun, May 27, 2018, 12:00 PM AKDT
UTC: 2018-05-27 20:00:30 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 53.400° N, 163.561° 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 3.9 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 207°, poorly surrounded by stations
Stations used: 117

Nearest places

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

Akutan, AlaskaPopulation 1,040. Forecast167 kmESE

Nearby

Within 100 km, magnitude 1.5 and up: 107 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 107.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000ed15 (also filed as ak19673236, ak0186rfwr6l). Read Wed, Sep 30, 2026, 11:48 PM UTC.