Alaska earthquakes

M4.4 earthquake 157 km WSW of Adak, Alaska

A magnitude 4.4 earthquake struck 157 km WSW of Adak, Alaska on Sun, Sep 5, 1976, 12:33 AM GMT-10 (10:33 UTC), 68 km (42 mi) below the surface.

A larger quake followed: M4.9 219 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.4 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1976-09-05 10:33:49 UTC
Depth
68.0 km (42.3 mi), shallow
Epicenter
51.397° N, 178.773° 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
23

Nearby

Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.9219 km W of Adak, Alaska · 18284 days ago · 100 km deep · 90 km away

Before

  1. 5.0107 km SW of Adak, Alaska · 18297 days ago · 39 km deep · 72 km away
  2. 4.2132 km WSW of Adak, Alaska · 18305 days ago · 57 km deep · 27 km away
  3. 4.8106 km WSW of Adak, Alaska · 18310 days ago · 55 km deep · 51 km away
  4. 5.1127 km WSW of Adak, Alaska · 18310 days ago · 65 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000j7w. Read Sat, Oct 3, 2026, 3:17 AM UTC.