Alaska earthquakes

M2.5 earthquake 243 km W of Adak, Alaska

A magnitude 2.5 earthquake struck 243 km W of Adak, Alaska on Thu, Mar 17, 2022, 10:49 PM GMT+12 (10:49 UTC), 166 km (103 mi) below the surface.

A larger quake followed: M4.4 Rat Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.5 (ml), micro
Local time: Thu, Mar 17, 2022, 10:49 PM GMT+12
UTC: 2022-03-17 10:49:59 UTC
Depth: 165.6 km (102.9 mi), intermediate-depth
Epicenter: 52.065° N, 179.837° E
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 11.5 km horizontally, 8.3 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 186°, poorly surrounded by stations
Stations used: 17

Nearby

Within 100 km, magnitude 1.5 and up: 107 in the 60 days after this one and 32 in the 30 days before it.

After

The first 60 of 107.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000hfwk (also filed as ak0223hv3c8j). Read Wed, Sep 30, 2026, 9:47 AM UTC.