Alaska earthquakes

M5.0 earthquake 107 km SW of Adak, Alaska

A magnitude 5.0 earthquake struck 107 km SW of Adak, Alaska on Sat, Aug 28, 1976, 7:29 AM GMT-10 (17:29 UTC), 39 km (24 mi) below the surface.

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The earthquake

Magnitude
5.0 (mb, body-wave), moderate
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1976-08-28 17:29:30 UTC
Depth
39.0 km (24.2 mi), shallow
Epicenter
51.220° N, 177.780° 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
49

Nearby

Within 100 km, magnitude 2.0 and up: 1 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.4157 km WSW of Adak, Alaska · 18289 days ago · 68 km deep · 72 km away

Before

  1. 4.2132 km WSW of Adak, Alaska · 18305 days ago · 57 km deep · 62 km away
  2. 4.8106 km WSW of Adak, Alaska · 18309 days ago · 55 km deep · 35 km away
  3. 5.1127 km WSW of Adak, Alaska · 18310 days ago · 65 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000j2z. Read Fri, Oct 2, 2026, 8:37 PM UTC.