Alaska earthquakes

M2.8 earthquake 219 km SE of Chiniak, Alaska

A magnitude 2.8 earthquake struck 219 km SE of Chiniak, Alaska on Fri, Mar 2, 2018, 10:27 AM AKST (19:27 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.2 228 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: Fri, Mar 2, 2018, 10:27 AM AKST
UTC: 2018-03-02 19:27:51 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.026° N, 150.149° 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 4.3 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.07
Depth from: Operator assigned
Station coverage gap: 236°, poorly surrounded by stations
Stations used: 69

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 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 201.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000d1ma (also filed as ak18630154, ak0182t79b8l). Read Sun, Sep 27, 2026, 10:48 AM UTC.