Alaska earthquakes

M2.9 earthquake 188 km WNW of Adak, Alaska

A magnitude 2.9 earthquake struck 188 km WNW of Adak, Alaska on Sun, May 31, 2020, 7:02 AM HADT (16:02 UTC), 237 km (147 mi) below the surface.

A larger quake followed: M4.3 120 km WNW of Adak, Alaska. This one was a foreshock.

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 2.9 (ml), micro
Local time: Sun, May 31, 2020, 7:02 AM HADT
UTC: 2020-05-31 16:02:43 UTC
Depth: 237.3 km (147.4 mi), intermediate-depth
Epicenter: 52.281° N, 179.300° 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 8.2 km horizontally, 10.8 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 170°
Stations used: 19

Nearby

Within 100 km, magnitude 1.5 and up: 51 in the 60 days after this one and 27 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 us6000a6an (also filed as ak0206zn87s3). Read Wed, Sep 30, 2026, 2:04 AM UTC.