Alaska earthquakes

M3.0 earthquake 110 km SSE of Sand Point, Alaska

A magnitude 3.0 earthquake struck 110 km SSE of Sand Point, Alaska on Thu, Aug 5, 2021, 1:31 AM AKDT (09:31 UTC), 22 km (13 mi) below the surface.

A larger quake followed: M3.5 123 km SSE of Perryville, 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: 3.0 (ml), minor
Local time: Thu, Aug 5, 2021, 1:31 AM AKDT
UTC: 2021-08-05 09:31:36 UTC
Depth: 21.5 km (13.4 mi), shallow
Epicenter: 54.452° N, 159.700° 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 2.5 km horizontally, 12.3 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 214°, poorly surrounded by stations
Stations used: 41

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast111 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f71p (also filed as ak0219z15xl2). Read Wed, Sep 23, 2026, 2:28 PM UTC.