Alaska earthquakes

M3.0 earthquake 251 km ESE of Chiniak, Alaska

A magnitude 3.0 earthquake struck 251 km ESE of Chiniak, Alaska on Sun, Oct 28, 2018, 10:59 AM AKDT (18:59 UTC), 21 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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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: Sun, Oct 28, 2018, 10:59 AM AKDT
UTC: 2018-10-28 18:59:53 UTC
Depth: 21.3 km (13.2 mi), shallow
Epicenter: 56.511° N, 148.660° 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 8.9 km horizontally, 11.5 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 230°, poorly surrounded by stations
Stations used: 33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 23 in the 30 days before it.

After

The first 60 of 176.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000hibe (also filed as ak20296823, aacse018du3u14e, ak018du3u14e). Read Tue, Sep 22, 2026, 5:59 AM UTC.