Alaska earthquakes

M4.9 earthquake 54 km S of Adak, Alaska

A magnitude 4.9 earthquake struck 54 km S of Adak, Alaska on Fri, Aug 17, 1973, 12:08 AM GMT-10 (10:08 UTC), 51 km (32 mi) below the surface.

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The earthquake

Magnitude
4.9 (mb), light
Local time
UTC
1973-08-17 10:08:10 UTC
Depth
51.0 km (31.7 mi), shallow
Epicenter
51.382° N, 176.614° 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
35

Nearby

Within 100 km, magnitude 1.9 and up: 1 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.779 km SE of Adak, Alaska · 19384 days ago · 40 km deep · 47 km away

Before

  1. 4.661 km S of Adak, Alaska · 19395 days ago · 53 km deep · 7 km away
  2. 4.161 km SSE of Adak, Alaska · 19395 days ago · 47 km deep · 12 km away
  3. 4.037 km SSE of Adak, Alaska · 19395 days ago · 55 km deep · 27 km away
  4. 5.647 km S of Adak, Alaska · 19395 days ago · 62 km deep · 7 km away
  5. 5.263 km S of Adak, Alaska · 19395 days ago · 48 km deep · 9 km away
  6. 5.865 km S of Adak, Alaska · 19395 days ago · 47 km deep · 11 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000033s. Read Tue, Sep 22, 2026, 6:07 AM UTC.