Alaska earthquakes

M4.5 earthquake 133 km WSW of Adak, Alaska

A magnitude 4.5 earthquake struck 133 km WSW of Adak, Alaska on Wed, Nov 28, 1979, 11:45 AM GMT-11 (22:45 UTC), 58 km (36 mi) below the surface.

A larger quake followed: M4.8 216 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
1979-11-28 22:45:58 UTC
Depth
58.0 km (36.0 mi), shallow
Epicenter
51.437° N, 178.433° 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
21

Nearby

Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.8216 km WSW of Adak, Alaska · 17094 days ago · 33 km deep · 84 km away
  2. 4.5175 km WSW of Adak, Alaska · 17061 days ago · 57 km deep · 42 km away
  3. 4.9217 km WSW of Adak, Alaska · 17058 days ago · 33 km deep · 84 km away
  4. 4.9216 km WSW of Adak, Alaska · 17052 days ago · 50 km deep · 83 km away
  5. 5.8142 km WSW of Adak, Alaska · 17049 days ago · 50 km deep · 14 km away

Before

  1. 4.6119 km SW of Adak, Alaska · 17104 days ago · 47 km deep · 34 km away
  2. 3.9165 km WSW of Adak, Alaska · 17111 days ago · 33 km deep · 41 km away
  3. 4.8126 km SW of Adak, Alaska · 17127 days ago · 33 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000148n. Read Tue, Sep 22, 2026, 10:28 PM UTC.