Alaska earthquakes

M2.8 earthquake 283 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 283 km SE of Chiniak, Alaska on Wed, Sep 19, 2018, 6:36 PM AKDT (02:36 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.0 230 km SE of Chiniak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Wed, Sep 19, 2018, 6:36 PM AKDT
UTC: 2018-09-20 02:36:25 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 55.679° N, 149.259° 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: 31

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 ak018c2zqwv6 (also filed as aacse018c2zqwv6). Read Tue, Sep 22, 2026, 10:02 AM UTC.