Alaska earthquakes

M3.5 earthquake 233 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 233 km SE of Chiniak, Alaska on Sun, Dec 2, 2018, 5:01 AM AKST (14:01 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 235 km SE 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: 3.5 (ml), minor
Local time: Sun, Dec 2, 2018, 5:01 AM AKST
UTC: 2018-12-02 14:01:23 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.294° N, 149.286° 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 7.1 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 240°, poorly surrounded by stations
Stations used: 24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 154 in the 60 days after this one and 45 in the 30 days before it.

After

The first 60 of 154.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000i0ha (also filed as ak20431255, ak018ffwwy9e, aacse018ffwwy9e). Read Tue, Sep 22, 2026, 11:32 PM UTC.