Alaska earthquakes

M2.7 earthquake 270 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 270 km SE of Chiniak, Alaska on Fri, Mar 16, 2018, 6:51 PM AKDT (02:51 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: 2.7 (ml), micro
Local time: Fri, Mar 16, 2018, 6:51 PM AKDT
UTC: 2018-03-17 02:51:31 UTC
Depth: 8.2 km (5.1 mi), shallow
Epicenter: 55.815° N, 149.294° 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 10.5 km horizontally, 9.1 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 234°, poorly surrounded by stations
Stations used: 28

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast290 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 us1000d8fl (also filed as ak0183hqc8v6, ak18744683). Read Thu, Sep 24, 2026, 1:40 PM UTC.