Alaska earthquakes

M2.9 earthquake 155 km SW of Adak, Alaska

A magnitude 2.9 earthquake struck 155 km SW of Adak, Alaska on Tue, Aug 9, 2022, 12:12 AM HADT (09:12 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.8 145 km WSW 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: 2.9 (ml), micro
Local time: Tue, Aug 9, 2022, 12:12 AM HADT
UTC: 2022-08-09 09:12:34 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 51.044° N, 178.439° 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 2.3 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.09
Depth from: Operator assigned
Station coverage gap: 219°, poorly surrounded by stations
Stations used: 32

Nearby

Within 100 km, magnitude 1.5 and up: 154 in the 60 days after this one and 107 in the 30 days before it.

After

The first 60 of 154.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ib3c (also filed as ak022a5n78yi). Read Tue, Sep 29, 2026, 9:55 PM UTC.