Alaska earthquakes

M2.5 earthquake 110 km SSE of Perryville, Alaska

A magnitude 2.5 earthquake struck 110 km SSE of Perryville, Alaska on Sat, Aug 21, 2021, 7:51 AM AKDT (15:51 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.0 137 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: 2.5 (ml), micro
Local time: Sat, Aug 21, 2021, 7:51 AM AKDT
UTC: 2021-08-21 15:51:45 UTC
Depth: 14.5 km (9.0 mi), shallow
Epicenter: 55.012° N, 158.391° 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.

Stations used: 23

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast139 kmESE

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.

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021aplgee4 (also filed as us7000f6hf). Read Wed, Sep 23, 2026, 5:16 AM UTC.