Alaska earthquakes

M3.5 earthquake 261 km SE of Chiniak, Alaska

A magnitude 3.5 earthquake struck 261 km SE of Chiniak, Alaska on Thu, Apr 2, 2020, 2:35 AM AKDT (10:35 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 229 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: Thu, Apr 2, 2020, 2:35 AM AKDT
UTC: 2020-04-02 10:35:31 UTC
Depth: 10.4 km (6.5 mi), shallow
Epicenter: 55.900° N, 149.347° 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 7.6 km horizontally, 8.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 201°, poorly surrounded by stations
Stations used: 42

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 52 in the 60 days after this one and 22 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008lsg (also filed as ak02049z56n9). Read Sun, Sep 27, 2026, 12:59 AM UTC.