Alaska earthquakes

M4.5 earthquake 87 km SE of Atka, Alaska

A magnitude 4.5 earthquake struck 87 km SE of Atka, Alaska on Thu, May 24, 1973, 4:57 PM GMT-10 (02:57 UTC), 45 km (28 mi) below the surface.

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
1973-05-25 02:57:50 UTC
Depth
45.0 km (28.0 mi), shallow
Epicenter
51.650° N, 173.282° 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
17

Nearby

Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.585 km SE of Atka, Alaska · 19478 days ago · 47 km deep · 4 km away
  2. 3.755 km SSE of Atka, Alaska · 19475 days ago · 54 km deep · 40 km away

Before

  1. 4.169 km SE of Atka, Alaska · 19479 days ago · 24 km deep · 19 km away
  2. 4.464 km ESE of Atka, Alaska · 19479 days ago · 50 km deep · 31 km away
  3. 5.482 km SE of Atka, Alaska · 19479 days ago · 43 km deep · 11 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00001xb. Read Tue, Sep 22, 2026, 5:15 PM UTC.