Alaska earthquakes

M2.8 earthquake 62 km ENE of Adak, Alaska

A magnitude 2.8 earthquake struck 62 km ENE of Adak, Alaska on Mon, May 4, 2020, 6:49 AM HADT (15:49 UTC), 193 km (120 mi) below the surface.

A larger quake followed: M4.0 100 km SW of Atka, 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: 2.8 (ml), micro
Local time: Mon, May 4, 2020, 6:49 AM HADT
UTC: 2020-05-04 15:49:17 UTC
Depth: 193.5 km (120.2 mi), intermediate-depth
Epicenter: 52.082° N, 175.786° 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 17.2 km horizontally, 6.9 km in depth
Magnitude uncertainty: ±0.12
Depth from: From location
Station coverage gap: 159°
Stations used: 19

Nearby

Within 100 km, magnitude 1.5 and up: 137 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 137.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70009ced (also filed as ak0205qzef8u). Read Tue, Sep 29, 2026, 6:14 PM UTC.