Alaska earthquakes

M1.7 earthquake 28 km SE of Chignik, Alaska

A magnitude 1.7 earthquake struck 28 km SE of Chignik, Alaska on Sun, Aug 20, 2017, 3:35 AM AKDT (11:35 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.4 95 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.

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The earthquake

Magnitude: 1.7 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Sun, Aug 20, 2017, 3:35 AM AKDT
UTC: 2017-08-20 11:35:39 UTC
Depth: 6.4 km (4.0 mi), shallow
Epicenter: 56.116° N, 158.066° 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: 16

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast175 kmENE

Nearby

Within 100 km, magnitude 1.5 and up: 33 in the 60 days after this one and 16 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017anvfvbk (also filed as ak16750909). Read Fri, Oct 2, 2026, 11:41 PM UTC.