Alaska earthquakes

M3.3 earthquake 24 km WNW of Clam Gulch, Alaska

A magnitude 3.3 earthquake struck 24 km WNW of Clam Gulch, Alaska on Thu, Sep 9, 2021, 9:31 PM AKDT (05:31 UTC), 66 km (41 mi) below the surface.

A larger quake followed: M4.7 12 km SSW of Clam Gulch, Alaska. This one was a foreshock.

Cohoe forecast More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 3.3 (ml), minor
Local time: Thu, Sep 9, 2021, 9:31 PM AKDT
UTC: 2021-09-10 05:31:50 UTC
Depth: 65.7 km (40.8 mi), shallow
Epicenter: 60.347° N, 151.770° 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: 162

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 171 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bmi4pzu (also filed as us7000f9wz). Read Wed, Sep 30, 2026, 7:39 AM UTC.