Alaska earthquakes

M3.2 earthquake 258 km ESE of Chiniak, Alaska

A magnitude 3.2 earthquake struck 258 km ESE of Chiniak, Alaska on Sun, Apr 15, 2018, 5:59 AM AKDT (13:59 UTC), 10 km (6 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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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.2 (ml), minor
Local time: Sun, Apr 15, 2018, 5:59 AM AKDT
UTC: 2018-04-15 13:59:39 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.395° N, 148.663° 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 4.6 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.04
Depth from: Operator assigned
Station coverage gap: 204°, poorly surrounded by stations
Stations used: 96

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 us1000dnf1 (also filed as ak19237629, ak0184tvitc0). Read Fri, Sep 25, 2026, 9:52 PM UTC.