Alaska earthquakes

M3.1 earthquake 297 km ESE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 297 km ESE of Chiniak, Alaska on Wed, May 2, 2018, 5:48 AM AKDT (13:48 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M5.5 276 km ESE of Chiniak, Alaska. This one was a foreshock.

Anchorage forecast More in Alaska

Map

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

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Wed, May 2, 2018, 5:48 AM AKDT
UTC: 2018-05-02 13:48:34 UTC
Depth: 17.2 km (10.7 mi), shallow
Epicenter: 56.636° N, 147.709° 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 7.8 km horizontally, 7.9 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 196°, poorly surrounded by stations
Stations used: 85

Nearest places

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

Anchorage, AlaskaPopulation 289,600. Forecast525 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 128 in the 30 days before it.

After

The first 60 of at least 199.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dyei (also filed as ak19301652, ak0185lzlchm). Read Sun, Sep 27, 2026, 11:05 AM UTC.