Alaska earthquakes

M4.6 earthquake 185 km WSW of Adak, Alaska

A magnitude 4.6 earthquake struck 185 km WSW of Adak, Alaska on Mon, Jul 5, 1976, 8:25 AM GMT-10 (18:25 UTC), 61 km (38 mi) below the surface.

A larger quake followed: M5.2 184 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.6 (mb), light
Local time
UTC
1976-07-05 18:25:17 UTC
Depth
61.0 km (37.9 mi), shallow
Epicenter
51.295° N, 179.142° 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
27

Nearby

Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 5.2184 km WSW of Adak, Alaska · 18341 days ago · 54 km deep · 4 km away
  2. 4.995 km WSW of Adak, Alaska · 18324 days ago · 58 km deep · 92 km away
  3. 5.1127 km WSW of Adak, Alaska · 18299 days ago · 65 km deep · 58 km away
  4. 4.8106 km WSW of Adak, Alaska · 18299 days ago · 55 km deep · 79 km away
  5. 4.2132 km WSW of Adak, Alaska · 18294 days ago · 57 km deep · 54 km away
  6. 5.0107 km SW of Adak, Alaska · 18287 days ago · 39 km deep · 95 km away
  7. 4.2276 km WSW of Adak, Alaska · 18282 days ago · 64 km deep · 92 km away

Before

  1. 4.0178 km WSW of Adak, Alaska · 18341 days ago · 56 km deep · 24 km away
  2. 5.2105 km WSW of Adak, Alaska · 18370 days ago · 54 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000h6s. Read Tue, Sep 22, 2026, 11:18 AM UTC.