Alaska earthquakes

M3.0 earthquake 271 km SE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 271 km SE of Chiniak, Alaska on Fri, Sep 21, 2018, 5:45 PM AKDT (01:45 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.1 240 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: 3.0 (ml), minor
Local time: Fri, Sep 21, 2018, 5:45 PM AKDT
UTC: 2018-09-22 01:45:25 UTC
Depth: 11.8 km (7.3 mi), shallow
Epicenter: 55.850° N, 149.219° 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.

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: 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 ak018c6aa3nd (also filed as aacse018c6aa3nd). Read Mon, Sep 21, 2026, 9:16 PM UTC.