Alaska earthquakes

M3.4 earthquake 276 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 276 km SE of Chiniak, Alaska on Fri, May 11, 2018, 6:26 AM AKDT (14:26 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M4.8 224 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: Fri, May 11, 2018, 6:26 AM AKDT
UTC: 2018-05-11 14:26:03 UTC
Depth: 20.4 km (12.7 mi), shallow
Epicenter: 56.186° N, 148.567° 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 4.4 km horizontally, 10.6 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 209°, poorly surrounded by stations
Stations used: 60

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 202.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000e5x1 (also filed as ak19565663, ak01860vw4cv). Read Sat, Sep 26, 2026, 5:06 PM UTC.