Alaska earthquakes

M3.5 earthquake 246 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 246 km SE of Chiniak, Alaska on Wed, May 2, 2018, 12:43 AM AKDT (08:43 UTC), 22 km (14 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: 3.5 (ml), minor
Local time: Wed, May 2, 2018, 12:43 AM AKDT
UTC: 2018-05-02 08:43:58 UTC
Depth: 22.2 km (13.8 mi), shallow
Epicenter: 56.203° N, 149.157° 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 7.3 km horizontally, 9.9 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 196°, poorly surrounded by stations
Stations used: 61

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

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dyed (also filed as ak0185lwl8oz, ak19300943). Read Sat, Sep 26, 2026, 11:17 PM UTC.