Alaska earthquakes

M3.1 earthquake 217 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 217 km SE of Chiniak, Alaska on Fri, Aug 13, 2021, 5:54 PM AKDT (01:54 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 282 km SE of Chiniak, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Fri, Aug 13, 2021, 5:54 PM AKDT
UTC: 2021-08-14 01:54:56 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.191° N, 149.836° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 7.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.07
Depth from: Operator assigned
Station coverage gap: 243°, poorly surrounded by stations
Stations used: 25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 30 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 us6000f5z0 (also filed as ak021adsdoz0). Read Thu, Sep 24, 2026, 2:36 AM UTC.