Alaska earthquakes

M3.5 earthquake 278 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 278 km SE of Chiniak, Alaska on Sun, Oct 15, 2023, 1:05 PM AKDT (21:05 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.4 245 km SE of Chiniak, Alaska. This one was a foreshock.

Kodiak forecast More in Alaska

Map

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

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The earthquake

Magnitude: 3.5 (ml), minor
Local time: Sun, Oct 15, 2023, 1:05 PM AKDT
UTC: 2023-10-15 21:05:23 UTC
Depth: 15.6 km (9.7 mi), shallow
Epicenter: 55.800° N, 149.145° 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 8.6 km horizontally, 8.1 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 198°, poorly surrounded by stations
Stations used: 66

Nearest places

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

Kodiak, AlaskaPopulation 6,253. Forecast297 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 5 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000lfsd (also filed as ak023d8nb64c). Read Mon, Sep 28, 2026, 8:40 AM UTC.