Alaska earthquakes

M2.9 earthquake 234 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 234 km SE of Chiniak, Alaska on Mon, Jul 30, 2018, 9:57 PM AKDT (05:57 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M4.9 250 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: Mon, Jul 30, 2018, 9:57 PM AKDT
UTC: 2018-07-31 05:57:34 UTC
Depth: 5.6 km (3.5 mi), shallow
Epicenter: 55.917° N, 150.007° 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 5.6 km horizontally, 8.7 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 218°, poorly surrounded by stations
Stations used: 36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 163 in the 30 days before it.

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000g4gw (also filed as ak0189qp91lg, ak20016612, aacse0189qp91lg). Read Tue, Sep 29, 2026, 12:30 PM UTC.