Alaska earthquakes

M2.8 earthquake 226 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 226 km SE of Chiniak, Alaska on Tue, Feb 13, 2018, 8:41 PM AKST (05:41 UTC), 21 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: Tue, Feb 13, 2018, 8:41 PM AKST
UTC: 2018-02-14 05:41:55 UTC
Depth: 20.9 km (13.0 mi), shallow
Epicenter: 56.074° N, 149.841° 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 8.4 km horizontally, 10.7 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 212°, poorly surrounded by stations
Stations used: 26

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 us2000d6k4 (also filed as ak01822iep3o, ak18493441). Read Tue, Sep 29, 2026, 7:39 AM UTC.