Alaska earthquakes

M4.0 earthquake 21 km SW of Atka, Alaska

A magnitude 4.0 earthquake struck 21 km SW of Atka, Alaska on Sun, May 18, 1986, 9:52 PM HADT (06:52 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.4 93 km SSW 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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1986-05-19 06:52:35 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
52.072° N, 174.434° 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: 39 in the 60 days after this one and 136 in the 30 days before it.

After

  1. 3.851 km W of Atka, Alaska · 14745 days ago · 33 km deep · 35 km away
  2. 4.9110 km SSW of Atka, Alaska · 14745 days ago · 33 km deep · 92 km away
  3. 4.0109 km SSW of Atka, Alaska · 14745 days ago · 33 km deep · 89 km away
  4. 4.389 km SW of Atka, Alaska · 14744 days ago · 33 km deep · 69 km away
  5. 4.9112 km ESE of Adak, Alaska · 14744 days ago · 33 km deep · 94 km away
  6. 4.0110 km SSW of Atka, Alaska · 14744 days ago · 33 km deep · 90 km away
  7. 4.6113 km SW of Atka, Alaska · 14744 days ago · 33 km deep · 93 km away
  8. 4.885 km E of Adak, Alaska · 14743 days ago · 33 km deep · 71 km away
  9. 4.655 km SW of Atka, Alaska · 14740 days ago · 33 km deep · 35 km away
  10. 5.091 km SW of Atka, Alaska · 14740 days ago · 33 km deep · 70 km away
  11. 4.896 km SSW of Atka, Alaska · 14739 days ago · 33 km deep · 77 km away
  12. 4.752 km SSW of Atka, Alaska · 14738 days ago · 33 km deep · 33 km away
  13. 4.962 km S of Atka, Alaska · 14737 days ago · 33 km deep · 49 km away
  14. 4.992 km ESE of Adak, Alaska · 14735 days ago · 33 km deep · 77 km away
  15. 4.575 km SSW of Atka, Alaska · 14732 days ago · 33 km deep · 57 km away
  16. 4.4105 km SSW of Atka, Alaska · 14731 days ago · 33 km deep · 85 km away
  17. 5.299 km SSW of Atka, Alaska · 14730 days ago · 33 km deep · 82 km away
  18. 5.493 km SSW of Atka, Alaska · 14730 days ago · 33 km deep · 76 km away
  19. 5.038 km SW of Atka, Alaska · 14730 days ago · 33 km deep · 17 km away
  20. 4.988 km SSW of Atka, Alaska · 14729 days ago · 33 km deep · 71 km away
  21. 4.765 km S of Atka, Alaska · 14728 days ago · 33 km deep · 54 km away
  22. 5.377 km S of Atka, Alaska · 14728 days ago · 33 km deep · 64 km away
  23. 4.461 km SW of Atka, Alaska · 14727 days ago · 33 km deep · 41 km away
  24. 4.885 km SSW of Atka, Alaska · 14726 days ago · 33 km deep · 65 km away
  25. 4.871 km SW of Atka, Alaska · 14725 days ago · 33 km deep · 51 km away
  26. 4.397 km SSW of Atka, Alaska · 14719 days ago · 33 km deep · 78 km away
  27. 4.493 km ESE of Adak, Alaska · 14718 days ago · 33 km deep · 83 km away
  28. 4.5104 km SW of Atka, Alaska · 14716 days ago · 33 km deep · 84 km away
  29. 4.980 km SSE of Atka, Alaska · 14715 days ago · 33 km deep · 75 km away
  30. 4.7100 km SSW of Atka, Alaska · 14712 days ago · 33 km deep · 81 km away
  31. 4.887 km SW of Atka, Alaska · 14711 days ago · 33 km deep · 66 km away
  32. 4.665 km WSW of Atka, Alaska · 14711 days ago · 33 km deep · 48 km away
  33. 4.2118 km SSW of Atka, Alaska · 14711 days ago · 33 km deep · 99 km away
  34. 4.4109 km SW of Atka, Alaska · 14711 days ago · 33 km deep · 89 km away
  35. 4.383 km SW of Atka, Alaska · 14710 days ago · 33 km deep · 62 km away
  36. 5.446 km WNW of Atka, Alaska · 14704 days ago · 33 km deep · 40 km away
  37. 4.743 km W of Atka, Alaska · 14704 days ago · 33 km deep · 34 km away
  38. 4.5Andreanof Islands, Aleutian Islands, Alaska · 14694 days ago · 33 km deep · 90 km away
  39. 4.888 km SSW of Atka, Alaska · 14686 days ago · 33 km deep · 71 km away

Before

  1. 5.048 km W of Atka, Alaska · 14745 days ago · 33 km deep · 39 km away
  2. 5.451 km W of Atka, Alaska · 14745 days ago · 33 km deep · 42 km away
  3. 4.657 km W of Atka, Alaska · 14746 days ago · 33 km deep · 46 km away
  4. 4.774 km SSW of Atka, Alaska · 14746 days ago · 33 km deep · 55 km away
  5. 4.984 km SW of Atka, Alaska · 14746 days ago · 33 km deep · 64 km away
  6. 5.192 km SSW of Atka, Alaska · 14746 days ago · 33 km deep · 75 km away
  7. 4.4106 km SSW of Atka, Alaska · 14746 days ago · 33 km deep · 86 km away
  8. 4.922 km W of Atka, Alaska · 14747 days ago · 33 km deep · 18 km away
  9. 6.525 km NW of Atka, Alaska · 14747 days ago · 26 km deep · 29 km away
  10. 4.889 km SW of Atka, Alaska · 14748 days ago · 33 km deep · 69 km away
  11. 4.6101 km SW of Atka, Alaska · 14748 days ago · 33 km deep · 80 km away
  12. 5.082 km WSW of Atka, Alaska · 14748 days ago · 33 km deep · 62 km away
  13. 4.098 km SW of Atka, Alaska · 14748 days ago · 33 km deep · 78 km away
  14. 3.822 km SW of Atka, Alaska · 14749 days ago · 33 km deep · 2 km away
  15. 5.622 km W of Atka, Alaska · 14749 days ago · 33 km deep · 17 km away
  16. 5.325 km WNW of Atka, Alaska · 14749 days ago · 33 km deep · 28 km away
  17. 4.122 km WNW of Atka, Alaska · 14749 days ago · 33 km deep · 20 km away
  18. 4.219 km WSW of Atka, Alaska · 14749 days ago · 33 km deep · 9 km away
  19. 4.042 km WSW of Atka, Alaska · 14749 days ago · 33 km deep · 24 km away
  20. 4.833 km W of Atka, Alaska · 14749 days ago · 33 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002u65. Read Thu, Oct 1, 2026, 1:59 PM UTC.