Alaska earthquakes

M3.4 earthquake 238 km SE of Chiniak, Alaska

A magnitude 3.4 earthquake struck 238 km SE of Chiniak, Alaska on Tue, Oct 30, 2018, 8:41 AM AKDT (16:41 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.1 271 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: 3.4 (ml), minor
Local time: Tue, Oct 30, 2018, 8:41 AM AKDT
UTC: 2018-10-30 16:41:16 UTC
Depth: 7.9 km (4.9 mi), shallow
Epicenter: 55.962° N, 149.793° 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, 7.7 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 191°, poorly surrounded by stations
Stations used: 53

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 21 in the 30 days before it.

After

The first 60 of 178.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000hp4k (also filed as ak20305135, aacse018dxdlxf3, ak018dxdlxf3). Read Tue, Sep 22, 2026, 3:42 AM UTC.