Alaska earthquakes

M3.5 earthquake 267 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 267 km SE of Chiniak, Alaska on Thu, Jan 23, 2020, 7:47 AM AKST (16:47 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: 3.5 (ml), minor
Local time: Thu, Jan 23, 2020, 7:47 AM AKST
UTC: 2020-01-23 16:47:14 UTC
Depth: 8.1 km (5.0 mi), shallow
Epicenter: 55.878° N, 149.247° 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 7.7 km horizontally, 7.9 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 191°, poorly surrounded by stations
Stations used: 124

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 44 in the 60 days after this one and 21 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70007l85 (also filed as ak02012b6350). Read Sun, Sep 27, 2026, 3:56 PM UTC.