Alaska earthquakes

M3.4 earthquake 267 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 267 km SE of Chiniak, Alaska on Tue, May 15, 2018, 11:12 PM AKDT (07:12 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.8 224 km SE 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: 3.4 (ml), minor
Local time: Tue, May 15, 2018, 11:12 PM AKDT
UTC: 2018-05-16 07:12:47 UTC
Depth: 7.5 km (4.7 mi), shallow
Epicenter: 55.829° N, 149.342° 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 8.3 km horizontally, 7.8 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 197°, poorly surrounded by stations
Stations used: 48

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast287 kmSE

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 us1000ecmt (also filed as ak19575142, aacse018691bx2v, ak018691bx2v). Read Fri, Sep 25, 2026, 4:43 PM UTC.