Alaska earthquakes

M4.1 earthquake 271 km SE of Chiniak, Alaska

A magnitude 4.1 earthquake struck 271 km SE of Chiniak, Alaska on Fri, Nov 2, 2018, 9:29 PM AKDT (05:29 UTC), 23 km (15 mi) below the surface.

A larger quake followed: M4.5 236 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: 4.1 (mb), light
Local time: Fri, Nov 2, 2018, 9:29 PM AKDT
UTC: 2018-11-03 05:29:57 UTC
Depth: 23.4 km (14.5 mi), shallow
Epicenter: 56.217° N, 148.620° 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 7.2 km horizontally, 8.2 km in depth
Magnitude uncertainty: ±0.21
Depth from: From location
Station coverage gap: 147°
Stations used: 208

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 14 in the 30 days before it.

After

The first 60 of 185.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000i6bg (also filed as ak018e3t5544, ak20317761, aacse018e3t5544). Read Wed, Sep 23, 2026, 3:32 AM UTC.