Alaska earthquakes

M3.4 earthquake 105 km SSE of Sand Point, Alaska

A magnitude 3.4 earthquake struck 105 km SSE of Sand Point, Alaska on Fri, Jun 18, 2021, 12:48 PM AKDT (20:48 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M3.7 113 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: 3.4 (mb), minor
Local time: Fri, Jun 18, 2021, 12:48 PM AKDT
UTC: 2021-06-18 20:48:01 UTC
Depth: 26.1 km (16.2 mi), shallow
Epicenter: 54.538° N, 159.604° 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 3.6 km horizontally, 6.4 km in depth
Magnitude uncertainty: ±0.24
Depth from: From location
Station coverage gap: 187°, poorly surrounded by stations
Stations used: 155

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast106 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 us7000ee95 (also filed as ak0217ru0m5w). Read Wed, Sep 23, 2026, 6:21 PM UTC.