Alaska earthquakes

M2.9 earthquake 217 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 217 km SE of Chiniak, Alaska on Wed, Aug 1, 2018, 7:01 PM AKDT (03:01 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.3 220 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: 2.9 (ml), micro
Local time: Wed, Aug 1, 2018, 7:01 PM AKDT
UTC: 2018-08-02 03:01:33 UTC
Depth: 20.7 km (12.8 mi), shallow
Epicenter: 56.247° N, 149.732° 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 8.3 km horizontally, 10.6 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 239°, poorly surrounded by stations
Stations used: 35

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 us1000g5jn (also filed as ak0189tysuuq, ak20032940, aacse0189tysuuq). Read Tue, Sep 22, 2026, 4:22 PM UTC.