Alaska earthquakes

M2.1 earthquake 12 km SE of Tyonek, Alaska

A magnitude 2.1 earthquake struck 12 km SE of Tyonek, Alaska on Tue, Dec 5, 2017, 1:54 AM AKST (10:54 UTC), 53 km (33 mi) below the surface.

A larger quake followed: M3.9 1 km ENE of Knik, Alaska. This one was a foreshock.

Nikiski forecast More in Alaska

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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: 2.1 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Tue, Dec 5, 2017, 1:54 AM AKST
UTC: 2017-12-05 10:54:21 UTC
Depth: 52.8 km (32.8 mi), shallow
Epicenter: 60.975° N, 151.007° 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.

Stations used: 77

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 156 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017fktglso (also filed as ak17471512). Read Sat, Oct 3, 2026, 12:15 PM UTC.