Alaska earthquakes

M2.9 earthquake 203 km SE of Chiniak, Alaska

A magnitude 2.9 earthquake struck 203 km SE of Chiniak, Alaska on Thu, Dec 6, 2018, 4:58 PM AKST (01:58 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.2 Gulf of 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: 2.9 (ml), micro
Local time: Thu, Dec 6, 2018, 4:58 PM AKST
UTC: 2018-12-07 01:58:10 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.235° N, 150.090° 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 6.3 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.07
Depth from: Operator assigned
Station coverage gap: 242°, poorly surrounded by stations
Stations used: 20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 156 in the 60 days after this one and 43 in the 30 days before it.

After

The first 60 of 156.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000j7fj (also filed as ak20630726, ak018fnz78n4, aacse018fnz78n4). Read Wed, Sep 23, 2026, 5:22 AM UTC.