Alaska earthquakes

M3.0 earthquake 21 km SSE of Karluk, Alaska

A magnitude 3.0 earthquake struck 21 km SSE of Karluk, Alaska on Sun, Jul 18, 2021, 8:09 AM AKDT (16:09 UTC), 38 km (23 mi) below the surface.

A larger quake followed: M3.7 57 km WSW of Akhiok, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
3.0 (ml), minor
Local time
UTC
2021-07-18 16:09:46 UTC
Depth
37.5 km (23.3 mi), shallow
Epicenter
57.400° N, 154.292° 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
124

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 83 in the 60 days after this one and 33 in the 30 days before it.

After

The first 60 of 83.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02195dj0v7 (also filed as us7000en72). Read Sun, Sep 27, 2026, 1:00 PM UTC.