Alaska earthquakes

M3.4 earthquake 279 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 279 km SE of Chiniak, Alaska on Tue, Mar 6, 2018, 10:07 PM AKST (07:07 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.4 252 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: 3.4 (ml), minor
Local time: Tue, Mar 6, 2018, 10:07 PM AKST
UTC: 2018-03-07 07:07:39 UTC
Depth: 9.7 km (6.1 mi), shallow
Epicenter: 55.735° N, 149.242° 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 9.1 km horizontally, 8.4 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 220°, poorly surrounded by stations
Stations used: 38

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast299 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 us1000d3zp (also filed as ak18611197, ak018319oj7h). Read Sun, Sep 27, 2026, 3:01 PM UTC.