Alaska earthquakes

M3.4 earthquake 233 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 233 km SE of Chiniak, Alaska on Sat, Sep 17, 2022, 5:43 AM AKDT (13:43 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M3.8 223 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 17, 2022, 5:43 AM AKDT
UTC: 2022-09-17 13:43:26 UTC
Depth: 18.8 km (11.7 mi), shallow
Epicenter: 56.278° N, 149.312° 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, 8.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 197°, poorly surrounded by stations
Stations used: 29

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 14 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000i8uh (also filed as ak022by7q5ek). Read Sun, Sep 27, 2026, 9:01 PM UTC.