Alaska earthquakes

M3.8 earthquake 227 km SE of Chiniak, Alaska

A magnitude 3.8 earthquake struck 227 km SE of Chiniak, Alaska on Sun, Mar 1, 2020, 6:05 PM AKST (03:05 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.2 250 km ESE 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: 3.8 (mb), minor
Local time: Sun, Mar 1, 2020, 6:05 PM AKST
UTC: 2020-03-02 03:05:23 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.065° N, 149.844° 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 6.4 km horizontally, 1.7 km in depth
Magnitude uncertainty: ±0.23
Depth from: Operator assigned
Station coverage gap: 168°
Stations used: 27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 15 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600087ns (also filed as ak0202ul4x9r). Read Sat, Sep 26, 2026, 2:32 PM UTC.