Alaska earthquakes

M3.5 earthquake 81 km SSW of Sand Point, Alaska

A magnitude 3.5 earthquake struck 81 km SSW of Sand Point, Alaska on Mon, Aug 10, 2020, 11:58 AM AKDT (19:58 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.9 68 km SE 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: 3.5 (mb), minor
Local time: Mon, Aug 10, 2020, 11:58 AM AKDT
UTC: 2020-08-10 19:58:31 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 54.641° N, 160.910° 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 3.2 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.28
Depth from: Operator assigned
Station coverage gap: 267°, poorly surrounded by stations
Stations used: 50

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast82 kmSSW

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

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bc5i (also filed as ak020a94i4f1). Read Sun, Sep 27, 2026, 7:08 AM UTC.