Alaska earthquakes

M2.5 earthquake 85 km N of Karluk, Alaska

A magnitude 2.5 earthquake struck 85 km N of Karluk, Alaska on Sun, Apr 4, 2021, 9:33 AM AKDT (17:33 UTC), 83 km (52 mi) below the surface.

A larger quake followed: M3.0 99 km NNW of Karluk, Alaska. This one was a foreshock.

Kodiak Station forecast More in Alaska

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

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The earthquake

Magnitude: 2.5 (ml), micro
Local time: Sun, Apr 4, 2021, 9:33 AM AKDT
UTC: 2021-04-04 17:33:42 UTC
Depth: 83.3 km (51.8 mi), intermediate-depth
Epicenter: 58.300° N, 154.284° 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: 29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 102 in the 60 days after this one and 53 in the 30 days before it.

After

The first 60 of 102.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0214bqu5j9 (also filed as us6000dyz9). Read Sat, Sep 26, 2026, 1:48 PM UTC.