Alaska earthquakes

M3.6 earthquake 244 km SE of Chiniak, Alaska

A magnitude 3.6 earthquake struck 244 km SE of Chiniak, Alaska on Sun, Apr 15, 2018, 12:09 AM AKDT (08:09 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M5.5 276 km ESE 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: Sun, Apr 15, 2018, 12:09 AM AKDT
UTC: 2018-04-15 08:09:16 UTC
Depth: 23.8 km (14.8 mi), shallow
Epicenter: 56.169° N, 149.262° 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 5.7 km horizontally, 9.1 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 153°
Stations used: 163

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 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000e0j7 (also filed as ak0184ts8vo1, ak19236934). Read Sat, Sep 26, 2026, 7:40 AM UTC.