Alaska earthquakes

M2.8 earthquake 229 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 229 km SE of Chiniak, Alaska on Wed, May 23, 2018, 7:19 PM AKDT (03:19 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.1 223 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: 2.8 (ml), micro
Local time: Wed, May 23, 2018, 7:19 PM AKDT
UTC: 2018-05-24 03:19:46 UTC
Depth: 7.7 km (4.8 mi), shallow
Epicenter: 55.972° N, 149.993° 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 8.7 km horizontally, 8.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 216°, poorly surrounded by stations
Stations used: 38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000eevr (also filed as ak19694122, aacse0186m7agdx, ak0186m7agdx). Read Mon, Sep 21, 2026, 10:14 PM UTC.