Alaska earthquakes

M2.5 earthquake 51 km NE of Adak, Alaska

A magnitude 2.5 earthquake struck 51 km NE of Adak, Alaska on Tue, Apr 12, 2022, 8:56 PM HADT (05:56 UTC), 188 km (117 mi) below the surface.

A larger quake followed: M4.7 43 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.5 (ml), micro
Local time: Tue, Apr 12, 2022, 8:56 PM HADT
UTC: 2022-04-13 05:56:12 UTC
Depth: 187.7 km (116.6 mi), intermediate-depth
Epicenter: 52.216° N, 176.124° 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 25.9 km horizontally, 11.8 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 186°, poorly surrounded by stations
Stations used: 21

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 99 in the 30 days before it.

After

The first 60 of 125.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000hcc9 (also filed as ak0224qfny0f). Read Wed, Sep 30, 2026, 10:58 PM UTC.