Alaska earthquakes

M3.5 earthquake 189 km W of Adak, Alaska

A magnitude 3.5 earthquake struck 189 km W of Adak, Alaska on Sat, Feb 12, 2022, 8:37 PM HAST (06:37 UTC), 186 km (115 mi) below the surface.

A larger quake followed: M3.9 184 km WNW 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: 3.5 (mb), minor
Local time: Sat, Feb 12, 2022, 8:37 PM HAST
UTC: 2022-02-13 06:37:15 UTC
Depth: 185.5 km (115.3 mi), intermediate-depth
Epicenter: 52.095° N, 179.372° 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 6.7 km horizontally, 4.2 km in depth
Magnitude uncertainty: ±0.25
Depth from: From location
Station coverage gap: 130°
Stations used: 58

Nearby

Within 100 km, magnitude 1.5 and up: 78 in the 60 days after this one and 40 in the 30 days before it.

After

The first 60 of 78.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000glpx (also filed as ak02220vfu3h). Read Wed, Sep 30, 2026, 11:37 PM UTC.