Alaska earthquakes

M2.8 earthquake 289 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 289 km SE of Chiniak, Alaska on Tue, Sep 4, 2018, 6:33 AM AKDT (14:33 UTC), 8 km (5 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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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Tue, Sep 4, 2018, 6:33 AM AKDT
UTC: 2018-09-04 14:33:25 UTC
Depth: 7.7 km (4.8 mi), shallow
Epicenter: 55.687° N, 149.104° 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: 30

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018bcq9x2n (also filed as aacse018bcq9x2n). Read Tue, Sep 29, 2026, 10:25 AM UTC.