Alaska earthquakes

M3.4 earthquake 260 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 260 km SE of Chiniak, Alaska on Mon, Apr 9, 2018, 5:46 AM AKDT (13:46 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M4.6 229 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: Mon, Apr 9, 2018, 5:46 AM AKDT
UTC: 2018-04-09 13:46:00 UTC
Depth: 8.9 km (5.5 mi), shallow
Epicenter: 55.714° N, 149.783° 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 5.9 km horizontally, 6.4 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 197°, poorly surrounded by stations
Stations used: 148

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast281 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 199.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000e04y (also filed as ak0184jy7v3e, ak19149889). Read Sat, Sep 26, 2026, 2:24 AM UTC.