Alaska earthquakes

M4.5 earthquake 41 km ESE of Nikolski, Alaska

A magnitude 4.5 earthquake struck 41 km ESE of Nikolski, Alaska on Tue, Dec 1, 2020, 12:25 PM AKST (21:25 UTC), 39 km (24 mi) below the surface.

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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
4.5 (mb), light
Local time
UTC
2020-12-01 21:25:15 UTC
Depth
39.1 km (24.3 mi), shallow
Epicenter
52.752° N, 168.328° 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 5.4 km horizontally, 5.5 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
137°
Stations used
106

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 134 in the 60 days after this one and 75 in the 30 days before it.

After

The first 60 of 134.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000cltk (also filed as ak020fg18476). Read Tue, Sep 29, 2026, 7:31 AM UTC.