Alaska earthquakes

M3.0 earthquake 32 km NW of Atka, Alaska

A magnitude 3.0 earthquake struck 32 km NW of Atka, Alaska on Mon, Sep 12, 2022, 6:40 PM HADT (03:40 UTC), 222 km (138 mi) below the surface.

A larger quake followed: M4.2 93 km ESE of Adak, Alaska. This one was a foreshock.

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 3.0 (ml), minor
Local time: Mon, Sep 12, 2022, 6:40 PM HADT
UTC: 2022-09-13 03:40:11 UTC
Depth: 222.4 km (138.2 mi), intermediate-depth
Epicenter: 52.373° N, 174.575° 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 26.7 km horizontally, 10.4 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 208°, poorly surrounded by stations
Stations used: 18

Nearby

Within 100 km, magnitude 1.5 and up: 95 in the 60 days after this one and 52 in the 30 days before it.

After

The first 60 of 95.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000i7pg (also filed as ak022brflshw). Read Wed, Sep 30, 2026, 4:11 PM UTC.