Alaska earthquakes

M2.7 earthquake 223 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 223 km SE of Chiniak, Alaska on Thu, Mar 29, 2018, 2:38 AM AKDT (10:38 UTC), 30 km (18 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: 2.7 (ml), micro
Local time: Thu, Mar 29, 2018, 2:38 AM AKDT
UTC: 2018-03-29 10:38:46 UTC
Depth: 29.5 km (18.3 mi), shallow
Epicenter: 56.005° N, 150.081° 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 7.7 km horizontally, 14.3 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 221°, 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 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 us2000dv5x (also filed as ak01841ph4di, ak18988160). Read Fri, Sep 25, 2026, 2:24 PM UTC.