Alaska earthquakes

M3.5 earthquake 61 km E of Adak, Alaska

A magnitude 3.5 earthquake struck 61 km E of Adak, Alaska on Thu, Jun 11, 2020, 1:10 AM HADT (10:10 UTC), 80 km (49 mi) below the surface.

A larger quake followed: M4.0 91 km ESE of Adak, Alaska. This one was a foreshock.

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, Jun 11, 2020, 1:10 AM HADT
UTC: 2020-06-11 10:10:28 UTC
Depth: 79.5 km (49.4 mi), intermediate-depth
Epicenter: 51.964° N, 175.758° 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 13.1 km horizontally, 6.7 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 180°
Stations used: 23

Nearby

Within 100 km, magnitude 1.5 and up: 155 in the 60 days after this one and 70 in the 30 days before it.

After

The first 60 of 155.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000agvg (also filed as ak0207hqm3we). Read Tue, Sep 29, 2026, 12:01 PM UTC.