Alaska earthquakes

M1.9 earthquake 51 km WSW of Atka, Alaska

A magnitude 1.9 earthquake struck 51 km WSW of Atka, Alaska on Sun, Sep 17, 2017, 6:31 AM HADT (15:31 UTC), 111 km (69 mi) below the surface.

A larger quake followed: M4.6 68 km SW of Atka, 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: Sun, Sep 17, 2017, 6:31 AM HADT
UTC: 2017-09-17 15:31:36 UTC
Depth: 111.3 km (69.2 mi), intermediate-depth
Epicenter: 51.962° N, 174.849° 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: 9

Nearby

Within 100 km, magnitude 1.5 and up: 86 in the 60 days after this one and 41 in the 30 days before it.

After

The first 60 of 86.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017by8uggc (also filed as ak16873932). Read Thu, Oct 1, 2026, 11:01 PM UTC.