Alaska earthquakes

M3.8 earthquake 42 km W of Atka, Alaska

A magnitude 3.8 earthquake struck 42 km W of Atka, Alaska on Fri, Jul 8, 2022, 2:12 PM HADT (23:12 UTC), 83 km (52 mi) below the surface.

A larger quake followed: M4.2 62 km ESE of Adak, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 3.8 (ml), minor
Local time: Fri, Jul 8, 2022, 2:12 PM HADT
UTC: 2022-07-08 23:12:54 UTC
Depth: 83.2 km (51.7 mi), intermediate-depth
Epicenter: 52.129° N, 174.805° 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 10.9 km horizontally, 7.0 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 179°
Stations used: 15

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 117 in the 30 days before it.

After

The first 60 of 195.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000i2rt (also filed as ak0228oyc8sa). Read Tue, Sep 29, 2026, 8:02 AM UTC.