Alaska earthquakes

M4.7 earthquake 43 km W of Atka, Alaska

A magnitude 4.7 earthquake struck 43 km W of Atka, Alaska on Sat, Jun 28, 1986, 7:32 PM HADT (04:32 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 88 km WSW of Atka, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
4.7 (mb), light
Local time
UTC
1986-06-29 04:32:10 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
52.255° N, 174.836° 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

Nearby

Within 100 km, magnitude 1.7 and up: 16 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 4.5Andreanof Islands, Aleutian Islands, Alaska · 14693 days ago · 33 km deep · 98 km away
  2. 4.888 km SSW of Atka, Alaska · 14685 days ago · 33 km deep · 92 km away
  3. 4.0101 km SW of Atka, Alaska · 14683 days ago · 33 km deep · 87 km away
  4. 4.631 km SW of Atka, Alaska · 14682 days ago · 33 km deep · 31 km away
  5. 4.993 km SW of Atka, Alaska · 14678 days ago · 33 km deep · 71 km away
  6. 4.669 km ESE of Adak, Alaska · 14677 days ago · 33 km deep · 79 km away
  7. 5.4Andreanof Islands, Aleutian Islands, Alaska · 14674 days ago · 33 km deep · 89 km away
  8. 4.844 km E of Adak, Alaska · 14674 days ago · 33 km deep · 90 km away
  9. 5.588 km WSW of Atka, Alaska · 14673 days ago · 33 km deep · 62 km away
  10. 4.785 km SW of Atka, Alaska · 14673 days ago · 33 km deep · 62 km away
  11. 4.4Andreanof Islands, Aleutian Islands, Alaska · 14673 days ago · 33 km deep · 43 km away
  12. 4.571 km S of Atka, Alaska · 14669 days ago · 33 km deep · 91 km away
  13. 4.795 km SSW of Atka, Alaska · 14669 days ago · 33 km deep · 94 km away
  14. 4.888 km SW of Atka, Alaska · 14657 days ago · 33 km deep · 69 km away
  15. 4.237 km E of Adak, Alaska · 14652 days ago · 33 km deep · 98 km away
  16. 4.364 km ESE of Adak, Alaska · 14650 days ago · 33 km deep · 89 km away

Before

  1. 5.446 km WNW of Atka, Alaska · 14703 days ago · 33 km deep · 8 km away
  2. 4.383 km SW of Atka, Alaska · 14709 days ago · 33 km deep · 64 km away
  3. 4.4109 km SW of Atka, Alaska · 14710 days ago · 33 km deep · 95 km away
  4. 4.665 km WSW of Atka, Alaska · 14710 days ago · 33 km deep · 28 km away
  5. 4.887 km SW of Atka, Alaska · 14710 days ago · 33 km deep · 66 km away
  6. 4.7100 km SSW of Atka, Alaska · 14711 days ago · 33 km deep · 97 km away
  7. 4.5104 km SW of Atka, Alaska · 14715 days ago · 33 km deep · 89 km away
  8. 4.493 km ESE of Adak, Alaska · 14716 days ago · 33 km deep · 82 km away
  9. 4.397 km SSW of Atka, Alaska · 14717 days ago · 33 km deep · 96 km away
  10. 4.478 km NNE of Adak, Alaska · 14720 days ago · 33 km deep · 99 km away
  11. 4.871 km SW of Atka, Alaska · 14724 days ago · 33 km deep · 64 km away
  12. 4.885 km SSW of Atka, Alaska · 14725 days ago · 33 km deep · 78 km away
  13. 4.461 km SW of Atka, Alaska · 14725 days ago · 33 km deep · 57 km away
  14. 5.377 km S of Atka, Alaska · 14726 days ago · 33 km deep · 93 km away
  15. 4.765 km S of Atka, Alaska · 14727 days ago · 33 km deep · 83 km away
  16. 4.988 km SSW of Atka, Alaska · 14728 days ago · 33 km deep · 91 km away
  17. 5.038 km SW of Atka, Alaska · 14728 days ago · 33 km deep · 39 km away
  18. 5.493 km SSW of Atka, Alaska · 14728 days ago · 33 km deep · 95 km away
  19. 4.4105 km SSW of Atka, Alaska · 14730 days ago · 33 km deep · 96 km away
  20. 4.575 km SSW of Atka, Alaska · 14730 days ago · 33 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002vhd. Read Wed, Sep 30, 2026, 7:39 AM UTC.