Alaska earthquakes

M2.9 earthquake 229 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 229 km SE of Chiniak, Alaska on Thu, Oct 18, 2018, 8:39 PM AKDT (04:39 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M3.5 232 km SE of Chiniak, 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: 2.9 (ml), micro
Local time: Thu, Oct 18, 2018, 8:39 PM AKDT
UTC: 2018-10-19 04:39:29 UTC
Depth: 20.1 km (12.5 mi), shallow
Epicenter: 56.025° N, 149.881° 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 8.4 km horizontally, 10.6 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 199°, poorly surrounded by stations
Stations used: 26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000he9e (also filed as ak20287011, aacse018dezji5o, ak018dezji5o). Read Tue, Sep 22, 2026, 10:39 AM UTC.