Alaska earthquakes

M1.9 earthquake 77 km WSW of Adak, Alaska

A magnitude 1.9 earthquake struck 77 km WSW of Adak, Alaska on Mon, Sep 12, 2016, 11:35 PM HADT (08:35 UTC), 63 km (39 mi) below the surface.

A larger quake followed: M5.0 153 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 1.9 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Mon, Sep 12, 2016, 11:35 PM HADT
UTC: 2016-09-13 08:35:29 UTC
Depth: 62.7 km (39.0 mi), shallow
Epicenter: 51.704° N, 177.722° 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: 19

Nearby

Within 100 km, magnitude 1.5 and up: 105 in the 60 days after this one and 60 in the 30 days before it.

After

The first 60 of 105.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016bt6382g (also filed as ak14005065). Read Sun, Oct 4, 2026, 11:42 PM UTC.