Alaska earthquakes

M3.5 earthquake 221 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 221 km SE of Chiniak, Alaska on Sun, Oct 27, 2019, 11:57 AM AKDT (19:57 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M4.6 239 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: 3.5 (ml), minor
Local time: Sun, Oct 27, 2019, 11:57 AM AKDT
UTC: 2019-10-27 19:57:57 UTC
Depth: 20.2 km (12.5 mi), shallow
Epicenter: 56.273° N, 149.586° 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 11.4 km horizontally, 11.4 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 257°, poorly surrounded by stations
Stations used: 16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 47 in the 60 days after this one and 37 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600063s1 (also filed as ak019dsgvwqr). Read Sat, Sep 26, 2026, 9:33 PM UTC.