Alaska earthquakes

M3.0 earthquake 239 km SE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 239 km SE of Chiniak, Alaska on Fri, Apr 6, 2018, 10:49 PM AKDT (06:49 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M5.5 276 km ESE of Chiniak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.0 (ml), minor
Local time: Fri, Apr 6, 2018, 10:49 PM AKDT
UTC: 2018-04-07 06:49:11 UTC
Depth: 21.2 km (13.2 mi), shallow
Epicenter: 56.417° N, 149.009° 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 9.2 km horizontally, 11.1 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 219°, poorly surrounded by stations
Stations used: 51

Nearest places

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

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 us2000dz65 (also filed as ak19232813, ak0184gizspe). Read Sat, Sep 26, 2026, 1:17 AM UTC.