Alaska earthquakes

M2.9 earthquake 117 km SW of Nikolski, Alaska

A magnitude 2.9 earthquake struck 117 km SW of Nikolski, Alaska on Thu, Dec 13, 2018, 11:48 PM HAST (09:48 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.5 96 km WSW of Nikolski, Alaska. This one was a foreshock.

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The earthquake

Magnitude: 2.9 (ml), micro
Local time: Thu, Dec 13, 2018, 11:48 PM HAST
UTC: 2018-12-14 09:48:23 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 52.182° N, 170.076° 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 5.0 km horizontally, 2.0 km in depth
Depth from: Operator assigned
Station coverage gap: 217°, poorly surrounded by stations
Stations used: 14

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 11 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000itqt (also filed as ak20513142, ak018fzoo0f7). Read Wed, Sep 30, 2026, 9:30 PM UTC.