Alaska earthquakes

M3.3 earthquake 77 km ESE of Chignik, Alaska

A magnitude 3.3 earthquake struck 77 km ESE of Chignik, Alaska on Fri, Aug 27, 2021, 3:50 PM AKDT (23:50 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.8 137 km ESE of Chignik, 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.

Open the live map with earthquakes

The earthquake

Magnitude: 3.3 (ml), minor
Local time: Fri, Aug 27, 2021, 3:50 PM AKDT
UTC: 2021-08-27 23:50:19 UTC
Depth: 9.7 km (6.0 mi), shallow
Epicenter: 56.045° N, 157.241° 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: 103

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast219 kmENE

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 23 in the 30 days before it.

After

The first 60 of 176.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021aznfo4x (also filed as us7000f52e). Read Wed, Sep 23, 2026, 7:32 AM UTC.