Alaska earthquakes

M3.1 earthquake 97 km S of Atka, Alaska

A magnitude 3.1 earthquake struck 97 km S of Atka, Alaska on Mon, Aug 17, 2026, 7:33 PM HADT (04:33 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 92 km SE of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Mon, Aug 17, 2026, 7:33 PM HADT
UTC: 2026-08-18 04:33:56 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 51.316° N, 174.209° 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 4.9 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: Operator assigned
Station coverage gap: 215°, poorly surrounded by stations
Stations used: 19

Nearby

Within 100 km, magnitude 1.5 and up: 52 since this one and 147 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 us6000tllz (also filed as aka2026qhidrc). Read Tue, Sep 22, 2026, 8:47 PM UTC.