Alaska earthquakes

M3.1 earthquake 245 km ESE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 245 km ESE of Chiniak, Alaska on Sun, Oct 14, 2018, 10:07 PM AKDT (06:07 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.2 238 km ESE 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: 3.1 (ml), minor
Local time: Sun, Oct 14, 2018, 10:07 PM AKDT
UTC: 2018-10-15 06:07:47 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.526° N, 148.756° 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 7.9 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 222°, poorly surrounded by stations
Stations used: 72

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 198 in the 60 days after this one and 1 in the 30 days before it.

After

The first 60 of 198.

Before

3.1265 km SE of Chiniak, AlaskaSun, Oct 14, 9:41 PM AKDT · 2899 days ago · 12 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000hcfn (also filed as ak20282925, ak018d8ee5tm, aacse018d8ee5tm). Read Tue, Sep 22, 2026, 10:46 AM UTC.