Alaska earthquakes

M2.7 earthquake 221 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 221 km SE of Chiniak, Alaska on Fri, Apr 13, 2018, 10:23 PM AKDT (06:23 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M5.5 276 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: Fri, Apr 13, 2018, 10:23 PM AKDT
UTC: 2018-04-14 06:23:29 UTC
Depth: 20.1 km (12.5 mi), shallow
Epicenter: 56.319° N, 149.503° 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 9.3 km horizontally, 11.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 241°, poorly surrounded by stations
Stations used: 41

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 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dnpu (also filed as ak19244159, ak0184s3lp0t). Read Fri, Sep 25, 2026, 8:14 PM UTC.