Alaska earthquakes

M4.2 earthquake 118 km SSW of Atka, Alaska

A magnitude 4.2 earthquake struck 118 km SSW of Atka, Alaska on Sat, Jun 21, 1986, 10:38 PM HADT (07:38 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.8 76 km SSE 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
4.2 (mb), light
Local time
UTC
1986-06-22 07:38:14 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.301° N, 175.138° 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: 42 in the 60 days after this one and 45 in the 30 days before it.

After

  1. 4.4109 km SW of Atka, Alaska · 14710 days ago · 33 km deep · 15 km away
  2. 4.6101 km SE of Adak, Alaska · 14710 days ago · 33 km deep · 36 km away
  3. 4.383 km SW of Atka, Alaska · 14709 days ago · 33 km deep · 46 km away
  4. 4.455 km SE of Adak, Alaska · 14703 days ago · 33 km deep · 67 km away
  5. 5.475 km SSE of Adak, Alaska · 14703 days ago · 33 km deep · 72 km away
  6. 4.093 km SSE of Adak, Alaska · 14703 days ago · 33 km deep · 72 km away
  7. 4.291 km SSE of Adak, Alaska · 14703 days ago · 33 km deep · 72 km away
  8. 4.484 km SSE of Adak, Alaska · 14703 days ago · 33 km deep · 72 km away
  9. 5.063 km SE of Adak, Alaska · 14699 days ago · 33 km deep · 60 km away
  10. 4.975 km ESE of Adak, Alaska · 14699 days ago · 33 km deep · 46 km away
  11. 4.569 km SE of Adak, Alaska · 14696 days ago · 33 km deep · 62 km away
  12. 4.5Andreanof Islands, Aleutian Islands, Alaska · 14694 days ago · 33 km deep · 11 km away
  13. 4.888 km SSW of Atka, Alaska · 14685 days ago · 33 km deep · 41 km away
  14. 4.0101 km SW of Atka, Alaska · 14683 days ago · 33 km deep · 22 km away
  15. 4.631 km SW of Atka, Alaska · 14682 days ago · 33 km deep · 89 km away
  16. 4.879 km SE of Adak, Alaska · 14681 days ago · 33 km deep · 43 km away
  17. 5.257 km SSE of Adak, Alaska · 14680 days ago · 33 km deep · 75 km away
  18. 4.983 km SSE of Adak, Alaska · 14680 days ago · 33 km deep · 72 km away
  19. 4.993 km SW of Atka, Alaska · 14678 days ago · 33 km deep · 42 km away
  20. 5.876 km SSE of Adak, Alaska · 14678 days ago · 33 km deep · 72 km away
  21. 5.683 km SSE of Adak, Alaska · 14678 days ago · 33 km deep · 63 km away
  22. 4.669 km ESE of Adak, Alaska · 14678 days ago · 33 km deep · 61 km away
  23. 4.793 km SSE of Adak, Alaska · 14677 days ago · 33 km deep · 57 km away
  24. 4.497 km SSE of Adak, Alaska · 14676 days ago · 33 km deep · 75 km away
  25. 5.4Andreanof Islands, Aleutian Islands, Alaska · 14675 days ago · 33 km deep · 79 km away
  26. 4.844 km E of Adak, Alaska · 14675 days ago · 33 km deep · 87 km away
  27. 5.588 km WSW of Atka, Alaska · 14674 days ago · 33 km deep · 54 km away
  28. 4.785 km SW of Atka, Alaska · 14674 days ago · 33 km deep · 50 km away
  29. 4.4Andreanof Islands, Aleutian Islands, Alaska · 14674 days ago · 33 km deep · 67 km away
  30. 4.883 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 75 km away
  31. 4.986 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 71 km away
  32. 5.492 km S of Atka, Alaska · 14670 days ago · 33 km deep · 60 km away
  33. 4.889 km S of Atka, Alaska · 14670 days ago · 33 km deep · 63 km away
  34. 4.986 km S of Atka, Alaska · 14670 days ago · 33 km deep · 66 km away
  35. 4.354 km SSE of Adak, Alaska · 14670 days ago · 33 km deep · 80 km away
  36. 4.571 km S of Atka, Alaska · 14670 days ago · 33 km deep · 74 km away
  37. 5.076 km SE of Adak, Alaska · 14670 days ago · 33 km deep · 59 km away
  38. 4.795 km SSW of Atka, Alaska · 14669 days ago · 33 km deep · 29 km away
  39. 5.087 km S of Atka, Alaska · 14669 days ago · 33 km deep · 69 km away
  40. 4.3Andreanof Islands, Aleutian Islands, Alaska · 14662 days ago · 33 km deep · 28 km away
  41. 4.888 km SW of Atka, Alaska · 14657 days ago · 33 km deep · 42 km away
  42. 4.237 km E of Adak, Alaska · 14653 days ago · 33 km deep · 89 km away

Before

  1. 4.665 km WSW of Atka, Alaska · 14711 days ago · 33 km deep · 86 km away
  2. 4.887 km SW of Atka, Alaska · 14711 days ago · 33 km deep · 44 km away
  3. 4.4135 km SE of Adak, Alaska · 14711 days ago · 33 km deep · 24 km away
  4. 5.4125 km SE of Adak, Alaska · 14711 days ago · 33 km deep · 10 km away
  5. 4.7100 km SSW of Atka, Alaska · 14711 days ago · 33 km deep · 24 km away
  6. 4.576 km SE of Adak, Alaska · 14711 days ago · 33 km deep · 52 km away
  7. 4.271 km SE of Adak, Alaska · 14714 days ago · 33 km deep · 57 km away
  8. 4.883 km SSE of Adak, Alaska · 14714 days ago · 33 km deep · 71 km away
  9. 4.589 km SSE of Adak, Alaska · 14715 days ago · 33 km deep · 63 km away
  10. 4.980 km SSE of Atka, Alaska · 14715 days ago · 33 km deep · 92 km away
  11. 4.5104 km SW of Atka, Alaska · 14715 days ago · 33 km deep · 20 km away
  12. 4.493 km ESE of Adak, Alaska · 14717 days ago · 33 km deep · 35 km away
  13. 4.397 km SSW of Atka, Alaska · 14718 days ago · 33 km deep · 28 km away
  14. 4.682 km SE of Adak, Alaska · 14722 days ago · 33 km deep · 45 km away
  15. 4.577 km SE of Adak, Alaska · 14722 days ago · 33 km deep · 58 km away
  16. 4.379 km SSE of Adak, Alaska · 14723 days ago · 33 km deep · 60 km away
  17. 4.871 km SW of Atka, Alaska · 14725 days ago · 33 km deep · 48 km away
  18. 4.885 km SSW of Atka, Alaska · 14725 days ago · 33 km deep · 33 km away
  19. 4.461 km SW of Atka, Alaska · 14726 days ago · 33 km deep · 58 km away
  20. 5.377 km S of Atka, Alaska · 14727 days ago · 33 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002v9x. Read Wed, Sep 30, 2026, 11:34 PM UTC.