Alaska earthquakes

M3.0 earthquake 223 km SE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 223 km SE of Chiniak, Alaska on Wed, Feb 7, 2018, 11:08 PM AKST (08:08 UTC), 22 km (13 mi) below the surface.

A larger quake followed: M5.4 252 km ESE 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: 3.0 (ml), minor
Local time: Wed, Feb 7, 2018, 11:08 PM AKST
UTC: 2018-02-08 08:08:14 UTC
Depth: 21.6 km (13.4 mi), shallow
Epicenter: 56.366° N, 149.396° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 8.8 km horizontally, 11.1 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 230°, poorly surrounded by stations
Stations used: 55

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

After

The first 60 of at least 202.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000d3nr (also filed as ak0181smrr34, ak18438887). Read Mon, Sep 28, 2026, 4:07 PM UTC.