Alaska earthquakes

M3.2 earthquake 240 km SE of Chiniak, Alaska

A magnitude 3.2 earthquake struck 240 km SE of Chiniak, Alaska on Fri, Feb 21, 2020, 2:56 AM AKST (11:56 UTC), 8 km (5 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: 3.2 (ml), minor
Local time: Fri, Feb 21, 2020, 2:56 AM AKST
UTC: 2020-02-21 11:56:06 UTC
Depth: 7.8 km (4.8 mi), shallow
Epicenter: 56.016° N, 149.623° 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 8.4 km horizontally, 7.7 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 198°, poorly surrounded by stations
Stations used: 64

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 46 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 us6000882h (also filed as ak0202e6tuex). Read Thu, Sep 24, 2026, 11:46 AM UTC.