Alaska earthquakes

M3.5 earthquake 232 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 232 km SE of Chiniak, Alaska on Sun, Sep 13, 2020, 3:11 AM AKDT (11:11 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.2 205 km SE of Chiniak, Alaska. This one was a foreshock.

Kodiak 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: 3.5 (ml), minor
Local time: Sun, Sep 13, 2020, 3:11 AM AKDT
UTC: 2020-09-13 11:11:49 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.024° N, 149.813° 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 6.6 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: Operator assigned
Station coverage gap: 175°
Stations used: 142

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 18 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 us7000bmnl (also filed as ak020bt7qff9). Read Tue, Sep 29, 2026, 7:42 AM UTC.