Alaska earthquakes

M4.0 earthquake 275 km SE of Chiniak, Alaska

A magnitude 4.0 earthquake struck 275 km SE of Chiniak, Alaska on Tue, Apr 9, 2019, 12:00 PM AKDT (20:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.2 249 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: 4.0 (ml), light
Local time: Tue, Apr 9, 2019, 12:00 PM AKDT
UTC: 2019-04-09 20:00:59 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 55.781° N, 149.250° 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 7.6 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.04
Depth from: Operator assigned
Station coverage gap: 189°, poorly surrounded by stations
Stations used: 129

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast295 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 163 in the 60 days after this one and 97 in the 30 days before it.

After

The first 60 of 163.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600032hz (also filed as aacse0194k245ff, ak0194k245ff). Read Mon, Sep 28, 2026, 10:43 AM UTC.