Alaska earthquakes

M4.3 earthquake 59 km SW of Adak, Alaska

A magnitude 4.3 earthquake struck 59 km SW of Adak, Alaska on Mon, Jun 23, 1986, 12:39 AM HADT (09:39 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.9 79 km S 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
4.3 (mb), light
Local time
UTC
1986-06-23 09:39:56 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.461° N, 177.187° 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: 31 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 4.853 km S of Adak, Alaska · 14702 days ago · 33 km deep · 36 km away
  2. 4.558 km S of Adak, Alaska · 14701 days ago · 33 km deep · 37 km away
  3. 4.455 km SE of Adak, Alaska · 14701 days ago · 33 km deep · 86 km away
  4. 5.475 km SSE of Adak, Alaska · 14701 days ago · 33 km deep · 74 km away
  5. 4.236 km S of Adak, Alaska · 14701 days ago · 33 km deep · 42 km away
  6. 4.093 km SSE of Adak, Alaska · 14701 days ago · 33 km deep · 85 km away
  7. 4.291 km SSE of Adak, Alaska · 14701 days ago · 33 km deep · 83 km away
  8. 4.484 km SSE of Adak, Alaska · 14701 days ago · 33 km deep · 78 km away
  9. 4.761 km SW of Adak, Alaska · 14701 days ago · 33 km deep · 6 km away
  10. 5.063 km SE of Adak, Alaska · 14698 days ago · 33 km deep · 87 km away
  11. 4.569 km SE of Adak, Alaska · 14694 days ago · 33 km deep · 81 km away
  12. 5.527 km E of Adak, Alaska · 14692 days ago · 50 km deep · 82 km away
  13. 5.026 km SW of Adak, Alaska · 14692 days ago · 57 km deep · 33 km away
  14. 5.257 km SSE of Adak, Alaska · 14679 days ago · 33 km deep · 69 km away
  15. 4.983 km SSE of Adak, Alaska · 14678 days ago · 33 km deep · 78 km away
  16. 4.952 km S of Adak, Alaska · 14678 days ago · 33 km deep · 35 km away
  17. 5.876 km SSE of Adak, Alaska · 14676 days ago · 33 km deep · 74 km away
  18. 5.683 km SSE of Adak, Alaska · 14676 days ago · 33 km deep · 84 km away
  19. 4.793 km SSE of Adak, Alaska · 14676 days ago · 33 km deep · 94 km away
  20. 4.497 km SSE of Adak, Alaska · 14675 days ago · 33 km deep · 86 km away
  21. 4.844 km E of Adak, Alaska · 14673 days ago · 33 km deep · 94 km away
  22. 4.883 km SSE of Adak, Alaska · 14669 days ago · 33 km deep · 76 km away
  23. 4.986 km SSE of Adak, Alaska · 14669 days ago · 33 km deep · 80 km away
  24. 4.354 km SSE of Adak, Alaska · 14669 days ago · 33 km deep · 64 km away
  25. 5.076 km SE of Adak, Alaska · 14668 days ago · 33 km deep · 85 km away
  26. 5.979 km S of Adak, Alaska · 14667 days ago · 33 km deep · 43 km away
  27. 4.784 km S of Adak, Alaska · 14667 days ago · 33 km deep · 51 km away
  28. 4.987 km S of Adak, Alaska · 14667 days ago · 33 km deep · 53 km away
  29. 4.780 km S of Adak, Alaska · 14667 days ago · 33 km deep · 49 km away
  30. 4.5112 km W of Adak, Alaska · 14663 days ago · 92 km deep · 86 km away
  31. 4.237 km E of Adak, Alaska · 14652 days ago · 33 km deep · 86 km away

Before

  1. 4.263 km SW of Adak, Alaska · 14709 days ago · 33 km deep · 5 km away
  2. 4.576 km SE of Adak, Alaska · 14710 days ago · 33 km deep · 91 km away
  3. 4.536 km SW of Adak, Alaska · 14713 days ago · 33 km deep · 24 km away
  4. 4.271 km SE of Adak, Alaska · 14713 days ago · 33 km deep · 86 km away
  5. 4.883 km SSE of Adak, Alaska · 14713 days ago · 33 km deep · 79 km away
  6. 4.589 km SSE of Adak, Alaska · 14713 days ago · 33 km deep · 88 km away
  7. 6.557 km S of Adak, Alaska · 14713 days ago · 27 km deep · 39 km away
  8. 4.682 km SE of Adak, Alaska · 14721 days ago · 33 km deep · 99 km away
  9. 4.577 km SE of Adak, Alaska · 14721 days ago · 33 km deep · 86 km away
  10. 4.379 km SSE of Adak, Alaska · 14721 days ago · 33 km deep · 85 km away
  11. 4.7107 km SSW of Adak, Alaska · 14723 days ago · 33 km deep · 48 km away
  12. 4.181 km SSE of Adak, Alaska · 14729 days ago · 33 km deep · 74 km away
  13. 4.881 km SSE of Adak, Alaska · 14734 days ago · 33 km deep · 81 km away
  14. 4.281 km SE of Adak, Alaska · 14735 days ago · 33 km deep · 100 km away
  15. 4.763 km SSE of Adak, Alaska · 14737 days ago · 33 km deep · 73 km away
  16. 4.892 km SSE of Adak, Alaska · 14737 days ago · 33 km deep · 88 km away
  17. 4.689 km SSE of Adak, Alaska · 14738 days ago · 33 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002vaz. Read Tue, Sep 29, 2026, 3:15 PM UTC.