Alaska earthquakes

M3.9 earthquake 57 km SSE of Sand Point, Alaska

A magnitude 3.9 earthquake struck 57 km SSE of Sand Point, Alaska on Mon, Oct 5, 2020, 8:40 AM AKDT (16:40 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M7.6 2020 Sand Point, Alaska Earthquake. This one was a foreshock.

Sand Point forecast More in Alaska

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: Mon, Oct 5, 2020, 8:40 AM AKDT
UTC: 2020-10-05 16:40:55 UTC
Depth: 24.4 km (15.2 mi), shallow
Epicenter: 54.832° N, 160.300° 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 5.1 km horizontally, 5.5 km in depth
Magnitude uncertainty: ±0.36
Depth from: From location
Station coverage gap: 169°
Stations used: 53

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast58 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 144 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 us6000c8dn (also filed as ak020ctopgez). Read Sat, Sep 26, 2026, 9:26 PM UTC.