Alaska earthquakes

M3.1 earthquake 225 km ESE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 225 km ESE of Chiniak, Alaska on Sun, Aug 24, 2025, 12:30 AM AKDT (08:30 UTC), 30 km (18 mi) below the surface.

A larger quake followed: M3.2 177 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: Sun, Aug 24, 2025, 12:30 AM AKDT
UTC: 2025-08-24 08:30:05 UTC
Depth: 29.6 km (18.4 mi), shallow
Epicenter: 56.546° N, 149.115° 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 9.7 km horizontally, 9.3 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 225°, poorly surrounded by stations
Stations used: 36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 10 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000r3g7 (also filed as ak025aufrszg). Read Wed, Sep 30, 2026, 11:08 PM UTC.