Alaska earthquakes

M2.8 earthquake 227 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 227 km SE of Chiniak, Alaska on Tue, May 15, 2018, 9:26 PM AKDT (05:26 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.9 241 km SE of Old Harbor, 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: Tue, May 15, 2018, 9:26 PM AKDT
UTC: 2018-05-16 05:26:41 UTC
Depth: 6.5 km (4.1 mi), shallow
Epicenter: 55.946° N, 150.118° 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 7.1 km horizontally, 9.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 267°, poorly surrounded by stations
Stations used: 25

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 us1000ecms (also filed as ak19665699, aacse01869081d0, ak01869081d0). Read Tue, Sep 22, 2026, 6:47 PM UTC.