Alaska earthquakes

M2.7 earthquake 290 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 290 km SE of Chiniak, Alaska on Sun, Sep 9, 2018, 3:31 PM AKDT (23:31 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.3 237 km SE of Chiniak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.7 (ml), micro
Local time: Sun, Sep 9, 2018, 3:31 PM AKDT
UTC: 2018-09-09 23:31:54 UTC
Depth: 9.9 km (6.2 mi), shallow
Epicenter: 55.606° N, 149.251° 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: 21

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 ak018bl5b6s2 (also filed as aacse018bl5b6s2). Read Tue, Sep 22, 2026, 10:47 AM UTC.