Alaska earthquakes

M3.5 earthquake 28 km NNW of Atka, Alaska

A magnitude 3.5 earthquake struck 28 km NNW of Atka, Alaska on Sat, Aug 1, 2026, 10:53 PM HADT (07:53 UTC), 242 km (150 mi) below the surface.

A larger quake followed: M3.8 24 km NW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.5 (mb), minor
Local time: Sat, Aug 1, 2026, 10:53 PM HADT
UTC: 2026-08-02 07:53:26 UTC
Depth: 241.8 km (150.3 mi), intermediate-depth
Epicenter: 52.411° N, 174.418° 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.

Location uncertainty: About 13.9 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.17
Depth from: From location
Station coverage gap: 124°
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: 71 since this one and 56 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 us6000tirf (also filed as aka2026pealpb). Read Wed, Sep 30, 2026, 6:44 PM UTC.