Alaska earthquakes

M2.8 earthquake 220 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 220 km SE of Chiniak, Alaska on Wed, Oct 25, 2023, 8:12 AM AKDT (16:12 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 Gulf of 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: 2.8 (ml), micro
Local time: Wed, Oct 25, 2023, 8:12 AM AKDT
UTC: 2023-10-25 16:12:15 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.201° N, 149.735° 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 4.7 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 252°, poorly surrounded by stations
Stations used: 23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 8 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000la9s (also filed as ak023dp3qytg). Read Tue, Sep 29, 2026, 12:05 PM UTC.