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.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
3.5 (mb), minor
Local time
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 todayAlaska earthquakesLive 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.