Alaska earthquakes

M5.3 earthquake 207 km WSW of Adak, Alaska

A magnitude 5.3 earthquake struck 207 km WSW of Adak, Alaska on Thu, May 10, 1973, 1:39 AM GMT-10 (11:39 UTC), 61 km (38 mi) below the surface.

A larger quake followed: M5.8 222 km WSW 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: 5.3 (mb), moderate
Local time: Thu, May 10, 1973, 1:39 AM GMT-10
UTC: 1973-05-10 11:39:31 UTC
Depth: 61.0 km (37.9 mi), shallow
Epicenter: 51.372° N, 179.520° 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.

Stations used: 69

Nearby

Within 100 km, magnitude 2.3 and up: 6 in the 60 days after this one and 7 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 usp00001s8 (also filed as iscgem760367). Read Mon, Sep 28, 2026, 6:12 AM UTC.