Alaska earthquakes

M3.1 earthquake 46 km ENE of Adak, Alaska

A magnitude 3.1 earthquake struck 46 km ENE of Adak, Alaska on Sat, May 30, 2020, 10:51 PM HADT (07:51 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M5.2 52 km WNW of Adak, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Sat, May 30, 2020, 10:51 PM HADT
UTC: 2020-05-31 07:51:30 UTC
Depth: 11.5 km (7.2 mi), shallow
Epicenter: 52.062° N, 176.029° 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 2.5 km horizontally, 3.0 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 106°
Stations used: 42

Nearby

Within 100 km, magnitude 1.5 and up: 139 in the 60 days after this one and 72 in the 30 days before it.

After

The first 60 of 139.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000a4p6 (also filed as av62173921, ak0206zi5s6r). Read Tue, Sep 29, 2026, 12:58 PM UTC.