Alaska earthquakes

M5.0 earthquake 112 km S of Unalaska, Alaska

A magnitude 5.0 earthquake struck 112 km S of Unalaska, Alaska on Sun, Jul 27, 1986, 9:01 PM AKDT (05:01 UTC), 33 km (21 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1986-07-28 05:01:59 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
52.862° N, 166.590° 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.

Depth from
OPERATOR_ASSIGNED

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.0 and up: 7 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 4.763 km SW of Unalaska, Alaska · 14663 days ago · 33 km deep · 75 km away
  2. 4.662 km SW of Unalaska, Alaska · 14663 days ago · 33 km deep · 83 km away
  3. 4.6105 km S of Unalaska, Alaska · 14659 days ago · 33 km deep · 11 km away
  4. 4.560 km WSW of Unalaska, Alaska · 14656 days ago · 33 km deep · 95 km away
  5. 4.857 km SE of Unalaska, Alaska · 14641 days ago · 33 km deep · 91 km away
  6. 4.560 km SW of Unalaska, Alaska · 14629 days ago · 33 km deep · 77 km away
  7. 4.657 km SW of Unalaska, Alaska · 14613 days ago · 33 km deep · 91 km away

Before

  1. 4.779 km SSW of Unalaska, Alaska · 14668 days ago · 33 km deep · 61 km away
  2. 4.3Fox Islands, Aleutian Islands, Alaska · 14671 days ago · 33 km deep · 92 km away
  3. 4.586 km ENE of Nikolski, Alaska · 14673 days ago · 33 km deep · 80 km away
  4. 4.350 km SSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 74 km away
  5. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 74 km away
  6. 5.1Fox Islands, Aleutian Islands, Alaska · 14675 days ago · 33 km deep · 90 km away
  7. 6.064 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 87 km away
  8. 4.948 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 97 km away
  9. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 83 km away
  10. 5.064 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 100 km away
  11. 4.257 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 83 km away
  12. 4.862 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 84 km away
  13. 4.563 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 69 km away
  14. 6.051 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 91 km away
  15. 5.274 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 72 km away
  16. 5.672 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 72 km away
  17. 4.458 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 95 km away
  18. 4.657 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002wmc. Read Wed, Sep 23, 2026, 4:22 AM UTC.