Alaska earthquakes

M2.8 earthquake 234 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 234 km SE of Chiniak, Alaska on Sun, Apr 11, 2021, 3:19 AM AKDT (11:19 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.5 226 km SE of Chiniak, 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: 2.8 (ml), micro
Local time: Sun, Apr 11, 2021, 3:19 AM AKDT
UTC: 2021-04-11 11:19:39 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.294° N, 149.264° 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.

Location uncertainty: About 9.0 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 223°, poorly surrounded by stations
Stations used: 37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 42 in the 60 days after this one and 24 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e0gf (also filed as ak0214n7xzg1). Read Fri, Sep 25, 2026, 4:01 PM UTC.