Alaska earthquakes

M5.0 earthquake 29 km SSW of Adak, Alaska

A magnitude 5.0 earthquake struck 29 km SSW of Adak, Alaska on Thu, Jul 9, 1981, 3:39 PM GMT-10 (01:39 UTC), 55 km (34 mi) below the surface.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1981-07-10 01:39:31 UTC
Depth
54.6 km (33.9 mi), shallow
Epicenter
51.652° N, 176.870° 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.

Nearby

Within 100 km, magnitude 2.0 and up: 1 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.541 km SE of Adak, Alaska · 16473 days ago · 52 km deep · 44 km away

Before

  1. 4.764 km SW of Adak, Alaska · 16516 days ago · 51 km deep · 37 km away
  2. 4.261 km NE of Adak, Alaska · 16529 days ago · 164 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001ekz. Read Tue, Sep 22, 2026, 6:16 AM UTC.