Alaska earthquakes

M3.4 earthquake 173 km SE of Sand Point, Alaska

A magnitude 3.4 earthquake struck 173 km SE of Sand Point, Alaska on Fri, Aug 27, 2021, 12:22 PM AKDT (20:22 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M3.5 152 km SE 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: 3.4 (ml), minor
Local time: Fri, Aug 27, 2021, 12:22 PM AKDT
UTC: 2021-08-27 20:22:25 UTC
Depth: 17.3 km (10.7 mi), shallow
Epicenter: 54.404° N, 158.340° 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, 7.7 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 215°, poorly surrounded by stations
Stations used: 77

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast173 kmSE

Nearby

Within 100 km, magnitude 1.5 and up: 191 in the 60 days after this one and 8 in the 30 days before it.

After

The first 60 of 191.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000f8m3 (also filed as ak021azlhfyg). Read Wed, Sep 23, 2026, 7:25 AM UTC.