Alaska earthquakes

M3.7 earthquake 83 km E of Adak, Alaska

A magnitude 3.7 earthquake struck 83 km E of Adak, Alaska on Thu, Mar 10, 2022, 12:14 PM HAST (22:14 UTC), 73 km (46 mi) below the surface.

A larger quake followed: M4.2 68 km SE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 3.7 (ml), minor
Local time: Thu, Mar 10, 2022, 12:14 PM HAST
UTC: 2022-03-10 22:14:59 UTC
Depth: 73.3 km (45.6 mi), intermediate-depth
Epicenter: 51.867° N, 175.427° 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 9.1 km horizontally, 7.8 km in depth
Magnitude uncertainty: ±0.09
Depth from: From location
Station coverage gap: 197°, poorly surrounded by stations
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 102 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000h22d (also filed as ak02236h9p4g). Read Wed, Sep 30, 2026, 5:36 PM UTC.