Alaska earthquakes

M4.5 earthquake 69 km SE of Adak, Alaska

A magnitude 4.5 earthquake struck 69 km SE of Adak, Alaska on Mon, Jul 7, 1986, 12:31 AM HADT (09:31 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 27 km E of Adak, 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
4.5 (mb), light
Local time
UTC
1986-07-07 09:31:39 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.375° N, 176.022° 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 1.5 and up: 33 in the 60 days after this one and 36 in the 30 days before it.

After

  1. 4.5Andreanof Islands, Aleutian Islands, Alaska · 14686 days ago · 33 km deep · 60 km away
  2. 5.527 km E of Adak, Alaska · 14685 days ago · 50 km deep · 61 km away
  3. 5.026 km SW of Adak, Alaska · 14685 days ago · 57 km deep · 68 km away
  4. 4.888 km SSW of Atka, Alaska · 14677 days ago · 33 km deep · 100 km away
  5. 4.0101 km SW of Atka, Alaska · 14675 days ago · 33 km deep · 61 km away
  6. 4.879 km SE of Adak, Alaska · 14673 days ago · 33 km deep · 23 km away
  7. 5.257 km SSE of Adak, Alaska · 14672 days ago · 33 km deep · 14 km away
  8. 4.983 km SSE of Adak, Alaska · 14672 days ago · 33 km deep · 22 km away
  9. 4.952 km S of Adak, Alaska · 14671 days ago · 33 km deep · 47 km away
  10. 4.993 km SW of Atka, Alaska · 14670 days ago · 33 km deep · 62 km away
  11. 5.876 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 18 km away
  12. 5.683 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 17 km away
  13. 4.669 km ESE of Adak, Alaska · 14669 days ago · 33 km deep · 49 km away
  14. 4.793 km SSE of Adak, Alaska · 14669 days ago · 33 km deep · 25 km away
  15. 4.497 km SSE of Adak, Alaska · 14668 days ago · 33 km deep · 37 km away
  16. 4.844 km E of Adak, Alaska · 14667 days ago · 33 km deep · 55 km away
  17. 5.588 km WSW of Atka, Alaska · 14666 days ago · 33 km deep · 67 km away
  18. 4.785 km SW of Atka, Alaska · 14666 days ago · 33 km deep · 70 km away
  19. 4.4Andreanof Islands, Aleutian Islands, Alaska · 14666 days ago · 33 km deep · 87 km away
  20. 4.883 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 26 km away
  21. 4.986 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 25 km away
  22. 4.354 km SSE of Adak, Alaska · 14662 days ago · 33 km deep · 19 km away
  23. 5.076 km SE of Adak, Alaska · 14662 days ago · 33 km deep · 7 km away
  24. 4.795 km SSW of Atka, Alaska · 14661 days ago · 33 km deep · 88 km away
  25. 5.979 km S of Adak, Alaska · 14660 days ago · 33 km deep · 59 km away
  26. 4.784 km S of Adak, Alaska · 14660 days ago · 33 km deep · 56 km away
  27. 4.987 km S of Adak, Alaska · 14660 days ago · 33 km deep · 57 km away
  28. 4.780 km S of Adak, Alaska · 14660 days ago · 33 km deep · 53 km away
  29. 4.3Andreanof Islands, Aleutian Islands, Alaska · 14654 days ago · 33 km deep · 89 km away
  30. 4.888 km SW of Atka, Alaska · 14649 days ago · 33 km deep · 67 km away
  31. 4.237 km E of Adak, Alaska · 14645 days ago · 33 km deep · 52 km away
  32. 4.364 km ESE of Adak, Alaska · 14642 days ago · 33 km deep · 40 km away
  33. 4.488 km SW of Atka, Alaska · 14631 days ago · 33 km deep · 68 km away

Before

  1. 4.975 km ESE of Adak, Alaska · 14691 days ago · 33 km deep · 25 km away
  2. 5.063 km SE of Adak, Alaska · 14691 days ago · 33 km deep · 15 km away
  3. 4.761 km SW of Adak, Alaska · 14694 days ago · 33 km deep · 77 km away
  4. 4.484 km SSE of Adak, Alaska · 14695 days ago · 33 km deep · 24 km away
  5. 4.291 km SSE of Adak, Alaska · 14695 days ago · 33 km deep · 30 km away
  6. 4.093 km SSE of Adak, Alaska · 14695 days ago · 33 km deep · 32 km away
  7. 4.236 km S of Adak, Alaska · 14695 days ago · 33 km deep · 44 km away
  8. 5.475 km SSE of Adak, Alaska · 14695 days ago · 33 km deep · 16 km away
  9. 4.455 km SE of Adak, Alaska · 14695 days ago · 33 km deep · 25 km away
  10. 4.558 km S of Adak, Alaska · 14695 days ago · 33 km deep · 47 km away
  11. 4.853 km S of Adak, Alaska · 14695 days ago · 33 km deep · 46 km away
  12. 4.383 km SW of Atka, Alaska · 14701 days ago · 33 km deep · 73 km away
  13. 4.359 km SW of Adak, Alaska · 14701 days ago · 33 km deep · 81 km away
  14. 4.6101 km SE of Adak, Alaska · 14702 days ago · 33 km deep · 33 km away
  15. 4.4109 km SW of Atka, Alaska · 14702 days ago · 33 km deep · 57 km away
  16. 4.263 km SW of Adak, Alaska · 14702 days ago · 33 km deep · 87 km away
  17. 4.2118 km SSW of Atka, Alaska · 14703 days ago · 33 km deep · 62 km away
  18. 4.665 km WSW of Atka, Alaska · 14703 days ago · 33 km deep · 99 km away
  19. 4.887 km SW of Atka, Alaska · 14703 days ago · 33 km deep · 68 km away
  20. 4.4135 km SE of Adak, Alaska · 14703 days ago · 33 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002vsa. Read Tue, Sep 22, 2026, 8:46 PM UTC.