Alaska earthquakes

M2.8 earthquake 254 km ESE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 254 km ESE of Chiniak, Alaska on Tue, Apr 17, 2018, 12:08 PM AKDT (20:08 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.0 239 km SE 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: 2.8 (ml), micro
Local time: Tue, Apr 17, 2018, 12:08 PM AKDT
UTC: 2018-04-17 20:08:39 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.670° N, 148.449° 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 7.5 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.04
Depth from: Operator assigned
Station coverage gap: 226°, poorly surrounded by stations
Stations used: 85

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dppy (also filed as ak19247603, ak0184xagly6). Read Tue, Sep 22, 2026, 11:24 PM UTC.