Alaska earthquakes

M2.3 earthquake 74 km NNW of Atka, Alaska

A magnitude 2.3 earthquake struck 74 km NNW of Atka, Alaska on Wed, Sep 26, 2018, 12:07 AM HADT (09:07 UTC), 182 km (113 mi) below the surface.

A larger quake followed: M4.7 53 km N of Atka, 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 26, 2018, 12:07 AM HADT
UTC: 2018-09-26 09:07:48 UTC
Depth: 181.7 km (112.9 mi), intermediate-depth
Epicenter: 52.819° N, 174.591° 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: 16

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 12 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018cd0yv19 (also filed as ak20263906). Read Thu, Oct 1, 2026, 10:03 PM UTC.