Alaska earthquakes

M2.7 earthquake 225 km SE of Chiniak, Alaska

A magnitude 2.7 earthquake struck 225 km SE of Chiniak, Alaska on Mon, Jun 4, 2018, 3:30 AM AKDT (11:30 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.8 224 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: Mon, Jun 4, 2018, 3:30 AM AKDT
UTC: 2018-06-04 11:30:28 UTC
Depth: 6.2 km (3.9 mi), shallow
Epicenter: 55.986° N, 150.083° 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 9.7 km horizontally, 9.2 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 251°, poorly surrounded by stations
Stations used: 25

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 us1000er2d (also filed as ak19770054, aacse01874j1240, ak01874j1240). Read Mon, Sep 28, 2026, 8:52 PM UTC.