Alaska earthquakes

M3.1 earthquake 264 km ESE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 264 km ESE of Chiniak, Alaska on Tue, Aug 4, 2026, 8:00 AM AKDT (16:00 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M3.3 221 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: Tue, Aug 4, 2026, 8:00 AM AKDT
UTC: 2026-08-04 16:00:00 UTC
Depth: 22.0 km (13.7 mi), shallow
Epicenter: 56.417° N, 148.525° 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 7.9 km horizontally, 10.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 195°, poorly surrounded by stations
Stations used: 73

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 since this one and 13 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000tj1l (also filed as aka2026piirqk). Read Tue, Sep 22, 2026, 3:36 PM UTC.