Alaska earthquakes

M2.8 earthquake 207 km ESE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 207 km ESE of Chiniak, Alaska on Thu, Apr 19, 2018, 4:07 AM AKDT (12:07 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M3.1 257 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: Thu, Apr 19, 2018, 4:07 AM AKDT
UTC: 2018-04-19 12:07:22 UTC
Depth: 19.8 km (12.3 mi), shallow
Epicenter: 57.029° N, 149.006° 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 6.3 km horizontally, 5.9 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 230°, poorly surrounded by stations
Stations used: 27

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 us1000drpj (also filed as ak19266594, ak01850grkn2). Read Tue, Sep 22, 2026, 11:09 AM UTC.