M4.5 earthquake 89 km SE of Atka, Alaska

Magnitude

4.5 (mb), light

Local time

Sun, May 11, 1986, 2:22 PM HADT

UTC

1986-05-11 23:22:04 UTC

Depth

33.0 km (20.5 mi), shallow

Epicenter

51.560° N, 173.416° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

After

1. 5.5Andreanof Islands, Aleutian Islands, AlaskaSun, May 11, 6:47 PM HADT · 14744 days ago · 33 km deep · 88 km away
2. 4.7106 km SSW of Atka, AlaskaMon, May 12, 8:06 AM HADT · 14743 days ago · 33 km deep · 99 km away
3. 5.0107 km SSW of Atka, AlaskaMon, May 12, 11:23 AM HADT · 14743 days ago · 33 km deep · 89 km away
4. 4.785 km SSW of Atka, AlaskaMon, May 12, 8:56 PM HADT · 14743 days ago · 33 km deep · 90 km away
5. 4.886 km SSE of Atka, AlaskaTue, May 13, 5:14 AM HADT · 14742 days ago · 33 km deep · 7 km away
6. 4.889 km SE of Atka, AlaskaTue, May 13, 4:56 PM HADT · 14742 days ago · 33 km deep · 4 km away
7. 5.488 km SSE of Atka, AlaskaTue, May 13, 4:58 PM HADT · 14742 days ago · 33 km deep · 6 km away
8. 5.090 km SE of Atka, AlaskaTue, May 13, 6:54 PM HADT · 14742 days ago · 33 km deep · 2 km away
9. 4.8106 km SSE of Atka, AlaskaTue, May 13, 7:49 PM HADT · 14742 days ago · 33 km deep · 19 km away
10. 4.887 km SE of Atka, AlaskaTue, May 13, 10:59 PM HADT · 14742 days ago · 33 km deep · 5 km away
11. 4.770 km S of Atka, AlaskaWed, May 14, 5:58 AM HADT · 14741 days ago · 33 km deep · 58 km away
12. 5.198 km SSW of Atka, AlaskaWed, May 14, 9:42 PM HADT · 14741 days ago · 33 km deep · 92 km away
13. 4.338 km SSW of Atka, AlaskaWed, May 14, 10:08 PM HADT · 14741 days ago · 33 km deep · 75 km away
14. 4.219 km WSW of Atka, AlaskaWed, May 14, 11:13 PM HADT · 14741 days ago · 33 km deep · 98 km away
15. 3.822 km SW of Atka, AlaskaThu, May 15, 3:47 AM HADT · 14740 days ago · 33 km deep · 92 km away
16. 5.192 km SSW of Atka, AlaskaSun, May 18, 5:22 AM HADT · 14737 days ago · 33 km deep · 90 km away
17. 4.774 km SSW of Atka, AlaskaSun, May 18, 10:14 AM HADT · 14737 days ago · 33 km deep · 91 km away
18. 4.021 km SW of Atka, AlaskaSun, May 18, 9:52 PM HADT · 14737 days ago · 33 km deep · 90 km away
19. 4.9110 km SSW of Atka, AlaskaMon, May 19, 11:52 AM HADT · 14736 days ago · 33 km deep · 98 km away
20. 4.655 km SW of Atka, AlaskaSat, May 24, 9:40 AM HADT · 14731 days ago · 33 km deep · 93 km away
21. 4.896 km SSW of Atka, AlaskaSun, May 25, 2:32 PM HADT · 14730 days ago · 33 km deep · 98 km away
22. 4.752 km SSW of Atka, AlaskaMon, May 26, 2:00 PM HADT · 14729 days ago · 33 km deep · 82 km away
23. 4.962 km S of Atka, AlaskaTue, May 27, 5:16 AM HADT · 14728 days ago · 33 km deep · 62 km away
24. 4.594 km SE of Atka, AlaskaThu, May 29, 6:59 PM HADT · 14726 days ago · 33 km deep · 21 km away
25. 4.575 km SSW of Atka, AlaskaSun, Jun 1, 3:42 PM HADT · 14723 days ago · 33 km deep · 83 km away
26. 5.299 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14721 days ago · 33 km deep · 88 km away
27. 5.493 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14721 days ago · 33 km deep · 89 km away
28. 5.038 km SW of Atka, AlaskaTue, Jun 3, 2:41 PM HADT · 14721 days ago · 33 km deep · 91 km away
29. 4.988 km SSW of Atka, AlaskaWed, Jun 4, 10:25 AM HADT · 14720 days ago · 33 km deep · 86 km away
30. 4.5123 km S of Atka, AlaskaThu, Jun 5, 5:22 AM HADT · 14719 days ago · 33 km deep · 83 km away
31. 4.765 km S of Atka, AlaskaThu, Jun 5, 6:24 AM HADT · 14719 days ago · 33 km deep · 57 km away
32. 5.377 km S of Atka, AlaskaThu, Jun 5, 11:27 AM HADT · 14719 days ago · 33 km deep · 58 km away
33. 4.461 km SW of Atka, AlaskaFri, Jun 6, 11:47 AM HADT · 14718 days ago · 33 km deep · 93 km away
34. 4.871 km SW of Atka, AlaskaSat, Jun 7, 8:17 PM HADT · 14717 days ago · 33 km deep · 97 km away
35. 4.397 km SSW of Atka, AlaskaSat, Jun 14, 5:22 PM HADT · 14710 days ago · 33 km deep · 95 km away
36. 4.980 km SSE of Atka, AlaskaTue, Jun 17, 6:30 PM HADT · 14707 days ago · 33 km deep · 30 km away
37. 4.7100 km SSW of Atka, AlaskaSat, Jun 21, 6:38 AM HADT · 14703 days ago · 33 km deep · 99 km away
38. 4.2156 km ESE of Atka, AlaskaSun, Jun 22, 8:51 AM HADT · 14702 days ago · 33 km deep · 87 km away

Before

1. 5.781 km SSW of Atka, AlaskaSun, May 11, 1:48 PM HADT · 14744 days ago · 33 km deep · 87 km away
2. 4.885 km SE of Atka, AlaskaSun, May 11, 11:10 AM HADT · 14744 days ago · 33 km deep · 4 km away
3. 4.872 km S of Atka, AlaskaSun, May 11, 11:02 AM HADT · 14744 days ago · 33 km deep · 56 km away
4. 5.779 km SSE of Atka, AlaskaSun, May 11, 10:40 AM HADT · 14744 days ago · 33 km deep · 22 km away
5. 5.383 km SSE of Atka, AlaskaSun, May 11, 4:43 AM HADT · 14744 days ago · 33 km deep · 20 km away
6. 5.383 km SSE of Atka, AlaskaSun, May 11, 4:40 AM HADT · 14744 days ago · 33 km deep · 18 km away
7. 4.474 km SE of Atka, AlaskaSat, May 10, 2:56 PM HADT · 14745 days ago · 33 km deep · 15 km away
8. 4.178 km SSW of Atka, AlaskaSat, May 10, 1:50 PM HADT · 14745 days ago · 33 km deep · 97 km away
9. 4.777 km SSW of Atka, AlaskaSat, May 10, 12:37 PM HADT · 14745 days ago · 33 km deep · 88 km away
10. 4.840 km SSE of Atka, AlaskaSat, May 10, 10:49 AM HADT · 14745 days ago · 33 km deep · 55 km away
11. 4.570 km SE of Atka, AlaskaSat, May 10, 5:49 AM HADT · 14745 days ago · 33 km deep · 21 km away
12. 4.7116 km SSW of Atka, AlaskaSat, May 10, 2:13 AM HADT · 14745 days ago · 33 km deep · 97 km away
13. 4.882 km S of Atka, AlaskaFri, May 9, 4:33 PM HADT · 14746 days ago · 33 km deep · 66 km away
14. 5.883 km S of Atka, AlaskaFri, May 9, 10:24 AM HADT · 14746 days ago · 33 km deep · 47 km away
15. 5.981 km S of Atka, AlaskaFri, May 9, 10:04 AM HADT · 14746 days ago · 33 km deep · 58 km away
16. 4.981 km SSE of Atka, AlaskaFri, May 9, 7:58 AM HADT · 14746 days ago · 33 km deep · 38 km away
17. 4.726 km S of Atka, AlaskaFri, May 9, 4:31 AM HADT · 14746 days ago · 33 km deep · 66 km away
18. 4.795 km SSE of Atka, AlaskaFri, May 9, 12:13 AM HADT · 14747 days ago · 33 km deep · 14 km away
19. 4.369 km SE of Atka, AlaskaThu, May 8, 10:31 PM HADT · 14747 days ago · 33 km deep · 20 km away
20. 5.0Andreanof Islands, Aleutian Islands, AlaskaThu, May 8, 9:04 PM HADT · 14747 days ago · 33 km deep · 65 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0002twt. Read Tue, Sep 22, 2026, 10:23 PM UTC.