Alaska earthquakes

M3.1 earthquake 55 km ESE of King Salmon, Alaska

A magnitude 3.1 earthquake struck 55 km ESE of King Salmon, Alaska on Sun, Sep 26, 2021, 7:23 AM AKDT (15:23 UTC), 143 km (89 mi) below the surface.

A larger quake followed: M3.5 61 km N of Karluk, Alaska. This one was a foreshock.

Naknek forecast More in Alaska

Map

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

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Sun, Sep 26, 2021, 7:23 AM AKDT
UTC: 2021-09-26 15:23:21 UTC
Depth: 143.0 km (88.9 mi), intermediate-depth
Epicenter: 58.518° N, 155.765° 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: 178

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 76 in the 60 days after this one and 25 in the 30 days before it.

After

The first 60 of 76.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021cd4mtyw (also filed as us7000fem7). Read Wed, Sep 23, 2026, 3:30 AM UTC.