Alaska earthquakes

M2.9 earthquake 273 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 273 km SE of Chiniak, Alaska on Fri, Apr 6, 2018, 10:06 PM AKDT (06:06 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M5.5 276 km ESE of Chiniak, Alaska. This one was a foreshock.

Kodiak 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: 2.9 (ml), micro
Local time: Fri, Apr 6, 2018, 10:06 PM AKDT
UTC: 2018-04-07 06:06:20 UTC
Depth: 7.8 km (4.8 mi), shallow
Epicenter: 55.828° N, 149.217° 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 10.0 km horizontally, 8.7 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 219°, poorly surrounded by stations
Stations used: 40

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast292 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000dz62 (also filed as ak19232809, ak0184giqltp). Read Fri, Sep 25, 2026, 11:01 PM UTC.