Alaska earthquakes

M3.4 earthquake 259 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 259 km SE of Chiniak, Alaska on Sat, Sep 28, 2019, 4:44 PM AKDT (00:44 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M4.0 248 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: 3.4 (ml), minor
Local time: Sat, Sep 28, 2019, 4:44 PM AKDT
UTC: 2019-09-29 00:44:36 UTC
Depth: 20.8 km (12.9 mi), shallow
Epicenter: 56.239° N, 148.833° 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 9.1 km horizontally, 10.6 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 214°, poorly surrounded by stations
Stations used: 86

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 58 in the 60 days after this one and 25 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005rt5 (also filed as ak019chufwe1). Read Thu, Sep 24, 2026, 4:11 AM UTC.