Alaska earthquakes

M4.1 earthquake 47 km SSW of Adak, Alaska

A magnitude 4.1 earthquake struck 47 km SSW of Adak, Alaska on Mon, Jun 14, 1976, 2:39 AM GMT-10 (12:39 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M4.9 95 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.1 (mb), light
Local time
UTC
1976-06-14 12:39:39 UTC
Depth
50.0 km (31.1 mi), shallow
Epicenter
51.473° N, 176.852° 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
18

Nearby

Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.995 km WSW of Adak, Alaska · 18324 days ago · 58 km deep · 70 km away

Before

  1. 4.540 km S of Adak, Alaska · 18367 days ago · 58 km deep · 22 km away
  2. 4.526 km SSE of Adak, Alaska · 18367 days ago · 64 km deep · 31 km away
  3. 5.2105 km WSW of Adak, Alaska · 18370 days ago · 54 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000gvk. Read Tue, Sep 22, 2026, 8:56 PM UTC.