Alaska earthquakes

M3.0 earthquake 260 km ESE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 260 km ESE of Chiniak, Alaska on Sat, Oct 27, 2018, 8:18 AM AKDT (16:18 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M3.1 230 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: 3.0 (ml), minor
Local time: Sat, Oct 27, 2018, 8:18 AM AKDT
UTC: 2018-10-27 16:18:10 UTC
Depth: 20.5 km (12.7 mi), shallow
Epicenter: 56.376° N, 148.646° 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 3.9 km horizontally, 10.5 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 195°, poorly surrounded by stations
Stations used: 28

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 10 in the 30 days before it.

After

The first 60 of 189.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000hj79 (also filed as ak018dseuxuv, ak20305339, aacse018dseuxuv). Read Wed, Sep 23, 2026, 2:38 AM UTC.