Alaska earthquakes

M2.8 earthquake 40 km SSW of Atka, Alaska

A magnitude 2.8 earthquake struck 40 km SSW of Atka, Alaska on Mon, Nov 21, 2022, 12:51 PM HAST (22:51 UTC), 76 km (47 mi) below the surface.

A larger quake followed: M4.8 83 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.

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Mon, Nov 21, 2022, 12:51 PM HAST
UTC: 2022-11-21 22:51:28 UTC
Depth: 76.2 km (47.3 mi), intermediate-depth
Epicenter: 51.858° N, 174.399° 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 10.0 km horizontally, 15.4 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 251°, poorly surrounded by stations
Stations used: 8

Nearby

Within 100 km, magnitude 1.5 and up: 82 in the 60 days after this one and 116 in the 30 days before it.

After

The first 60 of 82.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000j7nd (also filed as ak022exv2blu). Read Wed, Sep 30, 2026, 8:36 PM UTC.