Alaska earthquakes

M2.7 earthquake 203 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 203 km SE of Chiniak, Alaska on Thu, Aug 3, 2023, 10:11 PM AKDT (06:11 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 218 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: 2.7 (ml), micro
Local time: Thu, Aug 3, 2023, 10:11 PM AKDT
UTC: 2023-08-04 06:11:40 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.265° N, 150.012° 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 3.1 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 214°, poorly surrounded by stations
Stations used: 50

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 9 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kxwx (also filed as ak0239xbq6v6). Read Wed, Sep 30, 2026, 10:46 PM UTC.