Alaska earthquakes

M2.9 earthquake 132 km WNW of Adak, Alaska

A magnitude 2.9 earthquake struck 132 km WNW of Adak, Alaska on Tue, Nov 9, 2021, 6:39 AM HAST (16:39 UTC), 179 km (111 mi) below the surface.

A larger quake followed: M3.8 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Tue, Nov 9, 2021, 6:39 AM HAST
UTC: 2021-11-09 16:39:24 UTC
Depth: 178.6 km (111.0 mi), intermediate-depth
Epicenter: 52.283° N, 178.451° 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 8.4 km horizontally, 12.8 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 172°
Stations used: 36

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 22 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000gecb (also filed as ak021edwyz28). Read Thu, Sep 24, 2026, 9:43 AM UTC.