Alaska earthquakes

M2.9 earthquake 192 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 192 km SE of Chiniak, Alaska on Mon, Feb 5, 2018, 2:03 AM AKST (11:03 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M5.0 289 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, Feb 5, 2018, 2:03 AM AKST
UTC: 2018-02-05 11:03:51 UTC
Depth: 26.7 km (16.6 mi), shallow
Epicenter: 56.294° N, 150.221° 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 8.7 km horizontally, 14.7 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 200°, poorly surrounded by stations
Stations used: 88

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 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000d28h (also filed as ak18436573, ak0181npx0pp). Read Wed, Sep 30, 2026, 6:58 AM UTC.