Alaska earthquakes

M2.1 earthquake 86 km ESE of Adak, Alaska

A magnitude 2.1 earthquake struck 86 km ESE of Adak, Alaska on Mon, Sep 11, 2017, 4:28 AM HADT (13:28 UTC), 48 km (30 mi) below the surface.

A larger quake followed: M4.4 77 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Mon, Sep 11, 2017, 4:28 AM HADT
UTC: 2017-09-11 13:28:58 UTC
Depth: 48.1 km (29.9 mi), shallow
Epicenter: 51.448° N, 175.591° 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: 14

Nearby

Within 100 km, magnitude 1.5 and up: 88 in the 60 days after this one and 46 in the 30 days before it.

After

The first 60 of 88.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017boaewuo (also filed as ak16813475). Read Fri, Oct 2, 2026, 12:03 AM UTC.