Alaska earthquakes

M3.1 earthquake 239 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 239 km SE of Chiniak, Alaska on Wed, Jul 25, 2018, 3:33 AM AKDT (11:33 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.3 267 km SE of Chiniak, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Wed, Jul 25, 2018, 3:33 AM AKDT
UTC: 2018-07-25 11:33:46 UTC
Depth: 21.3 km (13.2 mi), shallow
Epicenter: 56.302° N, 149.157° 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 8.5 km horizontally, 10.3 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 182°, poorly surrounded by stations
Stations used: 64

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000gils (also filed as ak0189gvgftt, ak20000491, aacse0189gvgftt). Read Mon, Sep 21, 2026, 9:53 PM UTC.