Alaska earthquakes

M2.0 earthquake 133 km W of Adak, Alaska

A magnitude 2.0 earthquake struck 133 km W of Adak, Alaska on Wed, Sep 15, 2021, 7:55 PM HADT (04:55 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M6.1 187 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: 2.0 (ml), micro
Local time: Wed, Sep 15, 2021, 7:55 PM HADT
UTC: 2021-09-16 04:55:32 UTC
Depth: 15.0 km (9.3 mi), shallow
Epicenter: 51.701° N, 178.549° 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.

Stations used: 25

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 93 in the 30 days before it.

After

The first 60 of 135.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bwewhbu (also filed as av91375646). Read Thu, Sep 24, 2026, 2:15 PM UTC.