Alaska earthquakes

M2.6 earthquake 150 km E of Atka, Alaska

A magnitude 2.6 earthquake struck 150 km E of Atka, Alaska on Tue, Aug 18, 2026, 11:46 AM HADT (20:46 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.0 166 km SW of Nikolski, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.6 (ml), micro
Local time: Tue, Aug 18, 2026, 11:46 AM HADT
UTC: 2026-08-18 20:46:23 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 51.993° N, 172.030° 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 4.7 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.13
Depth from: Operator assigned
Station coverage gap: 207°, poorly surrounded by stations
Stations used: 13

Nearby

Within 100 km, magnitude 1.5 and up: 30 since this one and 50 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 us6000tlu2 (also filed as aka2026qiopfk). Read Mon, Sep 28, 2026, 3:47 AM UTC.