Alaska earthquakes

M3.1 earthquake 276 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 276 km SE of Chiniak, Alaska on Mon, Mar 2, 2020, 11:21 PM AKST (08:21 UTC), 22 km (13 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: 3.1 (ml), minor
Local time: Mon, Mar 2, 2020, 11:21 PM AKST
UTC: 2020-03-03 08:21:37 UTC
Depth: 21.5 km (13.4 mi), shallow
Epicenter: 56.182° N, 148.562° 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 8.9 km horizontally, 11.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 209°, poorly surrounded by stations
Stations used: 33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 52 in the 60 days after this one and 19 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60008er3 (also filed as ak0202wbqx4t). Read Fri, Sep 25, 2026, 9:20 PM UTC.