Alaska earthquakes

M3.4 earthquake 200 km SSW of Adak, Alaska

A magnitude 3.4 earthquake struck 200 km SSW of Adak, Alaska on Mon, Aug 22, 2022, 10:49 PM HADT (07:49 UTC), 40 km (25 mi) below the surface.

A larger quake followed: M3.9 130 km SW of Adak, 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: 3.4 (ml), minor
Local time: Mon, Aug 22, 2022, 10:49 PM HADT
UTC: 2022-08-23 07:49:54 UTC
Depth: 39.8 km (24.7 mi), shallow
Epicenter: 50.261° N, 177.913° 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 8.8 km horizontally, 16.2 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 254°, poorly surrounded by stations
Stations used: 20

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 15 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 us6000ipuj (also filed as ak022asrr7x4). Read Wed, Sep 30, 2026, 2:45 AM UTC.