Alaska earthquakes

M3.0 earthquake 236 km SE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 236 km SE of Chiniak, Alaska on Wed, May 16, 2018, 11:03 PM AKDT (07:03 UTC), 20 km (13 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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Map

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

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The earthquake

Magnitude: 3.0 (ml), minor
Local time: Wed, May 16, 2018, 11:03 PM AKDT
UTC: 2018-05-17 07:03:16 UTC
Depth: 20.5 km (12.7 mi), shallow
Epicenter: 56.447° N, 149.029° 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, 9.9 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 218°, poorly surrounded by stations
Stations used: 64

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 us1000e9kp (also filed as ak19612590, aacse0186aot9hq, ak0186aot9hq). Read Thu, Sep 24, 2026, 11:44 AM UTC.