Alaska earthquakes

M3.8 earthquake 280 km SE of Chiniak, Alaska

A magnitude 3.8 earthquake struck 280 km SE of Chiniak, Alaska on Sun, Mar 25, 2018, 6:26 AM AKDT (14:26 UTC), 10 km (6 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: 3.8 (ml), minor
Local time: Sun, Mar 25, 2018, 6:26 AM AKDT
UTC: 2018-03-25 14:26:52 UTC
Depth: 10.4 km (6.5 mi), shallow
Epicenter: 55.705° N, 149.287° 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 7.2 km horizontally, 7.2 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 181°, poorly surrounded by stations
Stations used: 190

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast300 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 us1000d8vg (also filed as ak18763079, ak0183v5mx14). Read Sat, Sep 26, 2026, 8:54 AM UTC.