Alaska earthquakes

M3.1 earthquake 73 km NE of Adak, Alaska

A magnitude 3.1 earthquake struck 73 km NE of Adak, Alaska on Mon, Aug 22, 2022, 10:49 AM HADT (19:49 UTC), 253 km (157 mi) below the surface.

A larger quake followed: M4.7 21 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Mon, Aug 22, 2022, 10:49 AM HADT
UTC: 2022-08-22 19:49:44 UTC
Depth: 252.5 km (156.9 mi), intermediate-depth
Epicenter: 52.261° N, 175.769° 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 17.8 km horizontally, 7.7 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 182°, poorly surrounded by stations
Stations used: 19

Nearby

Within 100 km, magnitude 1.5 and up: 115 in the 60 days after this one and 80 in the 30 days before it.

After

The first 60 of 115.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000iptd (also filed as ak022arbd2e0). Read Wed, Sep 30, 2026, 12:56 AM UTC.