Alaska earthquakes

M2.5 earthquake 37 km NW of Atka, Alaska

A magnitude 2.5 earthquake struck 37 km NW of Atka, Alaska on Sun, Aug 21, 2022, 11:40 PM HADT (08:40 UTC), 205 km (127 mi) below the surface.

A larger quake followed: M3.8 51 km NNW of Atka, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude: 2.5 (ml), micro
Local time: Sun, Aug 21, 2022, 11:40 PM HADT
UTC: 2022-08-22 08:40:44 UTC
Depth: 204.8 km (127.2 mi), intermediate-depth
Epicenter: 52.458° N, 174.546° 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 23.5 km horizontally, 14.2 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 242°, poorly surrounded by stations
Stations used: 12

Nearby

Within 100 km, magnitude 1.5 and up: 88 in the 60 days after this one and 48 in the 30 days before it.

After

The first 60 of 88.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000icvd (also filed as ak022ar4rdco). Read Wed, Sep 30, 2026, 2:31 AM UTC.