Alaska earthquakes

M3.9 earthquake 96 km SSW of Sand Point, Alaska

A magnitude 3.9 earthquake struck 96 km SSW of Sand Point, Alaska on Mon, Jan 4, 2021, 2:49 AM AKST (11:49 UTC), 38 km (24 mi) below the surface.

A larger quake followed: M5.0 71 km S of King Cove, 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
3.9 (mb), minor
Local time
UTC
2021-01-04 11:49:48 UTC
Depth
38.0 km (23.6 mi), shallow
Epicenter
54.492° N, 160.812° 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 4.1 km horizontally, 7.9 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
161°
Stations used
86

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 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 202.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000d5el (also filed as ak0216szr77). Read Thu, Sep 24, 2026, 3:36 PM UTC.