Alaska earthquakes

M3.3 earthquake 256 km ESE of Chiniak, Alaska

A magnitude 3.3 earthquake struck 256 km ESE of Chiniak, Alaska on Fri, Nov 2, 2018, 11:38 PM AKDT (07:38 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.7 251 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: 3.3 (ml), minor
Local time: Fri, Nov 2, 2018, 11:38 PM AKDT
UTC: 2018-11-03 07:38:56 UTC
Depth: 20.7 km (12.9 mi), shallow
Epicenter: 56.470° N, 148.613° 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 8.1 km horizontally, 10.5 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 202°, poorly surrounded by stations
Stations used: 85

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 169 in the 60 days after this one and 30 in the 30 days before it.

After

The first 60 of 169.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000hr1t (also filed as ak20318093, ak018e3udun1, aacse018e3udun1). Read Tue, Sep 22, 2026, 3:11 PM UTC.