Alaska earthquakes

M2.7 earthquake 201 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 201 km SE of Chiniak, Alaska on Sun, Feb 11, 2018, 2:54 AM AKST (11:54 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M5.4 252 km ESE of Chiniak, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Sun, Feb 11, 2018, 2:54 AM AKST
UTC: 2018-02-11 11:54:38 UTC
Depth: 28.7 km (17.8 mi), shallow
Epicenter: 56.298° N, 150.001° 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 7.0 km horizontally, 16.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 220°, poorly surrounded by stations
Stations used: 40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 202.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000d55x (also filed as ak18465609, ak0181xng03a). Read Mon, Sep 28, 2026, 2:04 PM UTC.