Alaska earthquakes

M2.3 earthquake 130 km W of Adak, Alaska

A magnitude 2.3 earthquake struck 130 km W of Adak, Alaska on Wed, Sep 28, 2016, 9:03 PM HADT (06:03 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M5.2 229 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.3 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Wed, Sep 28, 2016, 9:03 PM HADT
UTC: 2016-09-29 06:03:10 UTC
Depth: 15.6 km (9.7 mi), shallow
Epicenter: 51.731° N, 178.511° 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: 17

Nearby

Within 100 km, magnitude 1.5 and up: 71 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 71.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016cjlb0fd (also filed as ak14094145). Read Sun, Oct 4, 2026, 11:11 PM UTC.