Alaska earthquakes

M4.1 earthquake 62 km SE of Sand Point, Alaska

A magnitude 4.1 earthquake struck 62 km SE of Sand Point, Alaska on Fri, Jul 31, 2020, 6:39 PM AKDT (02:39 UTC), 44 km (27 mi) below the surface.

A larger quake followed: M5.5 79 km SSW of Sand Point, Alaska. 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: 4.1 (mb), light
Local time: Fri, Jul 31, 2020, 6:39 PM AKDT
UTC: 2020-08-01 02:39:40 UTC
Depth: 43.8 km (27.2 mi), shallow
Epicenter: 54.916° N, 159.843° 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 5.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 77°
Stations used: 85

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast63 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000b7sc (also filed as ak0209tyfl1c). Read Sun, Sep 27, 2026, 3:50 PM UTC.