Alaska earthquakes

M3.6 earthquake 229 km SE of Chiniak, Alaska

A magnitude 3.6 earthquake struck 229 km SE of Chiniak, Alaska on Fri, May 11, 2018, 11:09 AM AKDT (19:09 UTC), 10 km (6 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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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.6 (ml), minor
Local time: Fri, May 11, 2018, 11:09 AM AKDT
UTC: 2018-05-11 19:09:15 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.108° N, 149.714° 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 6.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 178°
Stations used: 130

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 us1000e5x4 (also filed as ak19444367, ak01860yro72). Read Sat, Sep 26, 2026, 12:50 PM UTC.