Alaska earthquakes

M2.8 earthquake 219 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 219 km SE of Chiniak, Alaska on Mon, Feb 19, 2018, 12:35 AM AKST (09:35 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M5.4 252 km ESE 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: Mon, Feb 19, 2018, 12:35 AM AKST
UTC: 2018-02-19 09:35:08 UTC
Depth: 20.4 km (12.7 mi), shallow
Epicenter: 56.148° N, 149.857° 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 8.8 km horizontally, 11.8 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 266°, poorly surrounded by stations
Stations used: 30

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 us2000d8z6 (also filed as ak18571203, ak0182aufs03). Read Mon, Sep 28, 2026, 4:12 PM UTC.