M4.6 earthquake 113 km SW of Atka, Alaska

Magnitude

4.6 (mb), light

Local time

Tue, May 20, 1986, 2:50 AM HADT

UTC

1986-05-20 11:50:17 UTC

Depth

33.0 km (20.5 mi), shallow

Epicenter

51.377° N, 175.183° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

After

1. 4.886 km S of Adak, AlaskaTue, May 20, 4:48 AM HADT · 14735 days ago · 33 km deep · 94 km away
2. 4.795 km S of Adak, AlaskaTue, May 20, 5:40 AM HADT · 14735 days ago · 33 km deep · 93 km away
3. 3.875 km SE of Adak, AlaskaTue, May 20, 9:10 AM HADT · 14735 days ago · 33 km deep · 51 km away
4. 4.668 km SSE of Adak, AlaskaTue, May 20, 10:05 PM HADT · 14735 days ago · 33 km deep · 70 km away
5. 4.898 km SE of Adak, AlaskaWed, May 21, 8:30 AM HADT · 14734 days ago · 33 km deep · 23 km away
6. 4.885 km E of Adak, AlaskaWed, May 21, 1:12 PM HADT · 14734 days ago · 33 km deep · 53 km away
7. 4.573 km ESE of Adak, AlaskaThu, May 22, 2:48 AM HADT · 14733 days ago · 33 km deep · 41 km away
8. 4.5104 km SE of Adak, AlaskaThu, May 22, 7:24 AM HADT · 14733 days ago · 33 km deep · 34 km away
9. 4.989 km SSE of Adak, AlaskaThu, May 22, 10:19 PM HADT · 14733 days ago · 33 km deep · 71 km away
10. 4.689 km SSE of Adak, AlaskaSat, May 24, 7:44 AM HADT · 14731 days ago · 33 km deep · 77 km away
11. 4.655 km SW of Atka, AlaskaSat, May 24, 9:40 AM HADT · 14731 days ago · 33 km deep · 58 km away
12. 5.091 km SW of Atka, AlaskaSat, May 24, 3:33 PM HADT · 14731 days ago · 33 km deep · 34 km away
13. 4.892 km SSE of Adak, AlaskaSat, May 24, 10:16 PM HADT · 14731 days ago · 33 km deep · 66 km away
14. 4.763 km SSE of Adak, AlaskaSun, May 25, 10:23 AM HADT · 14730 days ago · 33 km deep · 66 km away
15. 4.896 km SSW of Atka, AlaskaSun, May 25, 2:32 PM HADT · 14730 days ago · 33 km deep · 26 km away
16. 4.752 km SSW of Atka, AlaskaMon, May 26, 2:00 PM HADT · 14729 days ago · 33 km deep · 63 km away
17. 4.8186 km S of Atka, AlaskaMon, May 26, 2:09 PM HADT · 14729 days ago · 33 km deep · 100 km away
18. 4.3170 km SSW of Atka, AlaskaMon, May 26, 5:24 PM HADT · 14729 days ago · 33 km deep · 83 km away
19. 4.281 km SE of Adak, AlaskaTue, May 27, 12:36 AM HADT · 14729 days ago · 33 km deep · 39 km away
20. 4.962 km S of Atka, AlaskaTue, May 27, 5:16 AM HADT · 14728 days ago · 33 km deep · 67 km away
21. 4.881 km SSE of Adak, AlaskaWed, May 28, 4:20 AM HADT · 14727 days ago · 33 km deep · 64 km away
22. 4.992 km ESE of Adak, AlaskaThu, May 29, 10:18 AM HADT · 14726 days ago · 33 km deep · 34 km away
23. 4.8113 km SE of Adak, AlaskaThu, May 29, 3:52 PM HADT · 14726 days ago · 33 km deep · 13 km away
24. 4.386 km SE of Adak, AlaskaSat, May 31, 12:53 PM HADT · 14724 days ago · 33 km deep · 38 km away
25. 4.247 km ENE of Adak, AlaskaSun, Jun 1, 12:12 PM HADT · 14723 days ago · 33 km deep · 99 km away
26. 4.575 km SSW of Atka, AlaskaSun, Jun 1, 3:42 PM HADT · 14723 days ago · 33 km deep · 45 km away
27. 4.4105 km SSW of Atka, AlaskaSun, Jun 1, 5:35 PM HADT · 14723 days ago · 33 km deep · 10 km away
28. 4.181 km SSE of Adak, AlaskaMon, Jun 2, 12:41 AM HADT · 14723 days ago · 33 km deep · 75 km away
29. 5.299 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14721 days ago · 33 km deep · 38 km away
30. 5.493 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14721 days ago · 33 km deep · 35 km away
31. 5.038 km SW of Atka, AlaskaTue, Jun 3, 2:41 PM HADT · 14721 days ago · 33 km deep · 76 km away
32. 4.988 km SSW of Atka, AlaskaWed, Jun 4, 10:25 AM HADT · 14720 days ago · 33 km deep · 38 km away
33. 4.5123 km S of Atka, AlaskaThu, Jun 5, 5:22 AM HADT · 14719 days ago · 33 km deep · 67 km away
34. 4.765 km S of Atka, AlaskaThu, Jun 5, 6:24 AM HADT · 14719 days ago · 33 km deep · 70 km away
35. 5.1106 km SE of Adak, AlaskaThu, Jun 5, 8:32 AM HADT · 14719 days ago · 33 km deep · 12 km away
36. 5.377 km S of Atka, AlaskaThu, Jun 5, 11:27 AM HADT · 14719 days ago · 33 km deep · 66 km away
37. 4.461 km SW of Atka, AlaskaFri, Jun 6, 11:47 AM HADT · 14718 days ago · 33 km deep · 52 km away
38. 4.885 km SSW of Atka, AlaskaSat, Jun 7, 6:58 AM HADT · 14717 days ago · 33 km deep · 29 km away
39. 4.871 km SW of Atka, AlaskaSat, Jun 7, 8:17 PM HADT · 14717 days ago · 33 km deep · 42 km away
40. 4.379 km SSE of Adak, AlaskaMon, Jun 9, 8:33 PM HADT · 14715 days ago · 33 km deep · 58 km away
41. 4.577 km SE of Adak, AlaskaTue, Jun 10, 6:15 AM HADT · 14714 days ago · 33 km deep · 56 km away
42. 4.682 km SE of Adak, AlaskaTue, Jun 10, 8:57 AM HADT · 14714 days ago · 33 km deep · 41 km away
43. 4.397 km SSW of Atka, AlaskaSat, Jun 14, 5:22 PM HADT · 14710 days ago · 33 km deep · 29 km away
44. 4.493 km ESE of Adak, AlaskaSun, Jun 15, 2:54 PM HADT · 14709 days ago · 33 km deep · 26 km away
45. 4.5104 km SW of Atka, AlaskaTue, Jun 17, 7:03 AM HADT · 14707 days ago · 33 km deep · 11 km away
46. 4.980 km SSE of Atka, AlaskaTue, Jun 17, 6:30 PM HADT · 14707 days ago · 33 km deep · 94 km away
47. 4.589 km SSE of Adak, AlaskaWed, Jun 18, 1:32 AM HADT · 14706 days ago · 33 km deep · 62 km away
48. 4.883 km SSE of Adak, AlaskaWed, Jun 18, 5:46 AM HADT · 14706 days ago · 33 km deep · 70 km away
49. 4.271 km SE of Adak, AlaskaWed, Jun 18, 9:28 AM HADT · 14706 days ago · 33 km deep · 53 km away
50. 4.576 km SE of Adak, AlaskaSat, Jun 21, 4:03 AM HADT · 14703 days ago · 33 km deep · 48 km away
51. 4.7100 km SSW of Atka, AlaskaSat, Jun 21, 6:38 AM HADT · 14703 days ago · 33 km deep · 26 km away
52. 5.4125 km SE of Adak, AlaskaSat, Jun 21, 8:28 PM HADT · 14703 days ago · 33 km deep · 19 km away
53. 4.4135 km SE of Adak, AlaskaSat, Jun 21, 8:33 PM HADT · 14703 days ago · 33 km deep · 33 km away
54. 4.887 km SW of Atka, AlaskaSat, Jun 21, 8:37 PM HADT · 14703 days ago · 33 km deep · 36 km away
55. 4.665 km WSW of Atka, AlaskaSat, Jun 21, 9:03 PM HADT · 14703 days ago · 33 km deep · 78 km away
56. 4.2118 km SSW of Atka, AlaskaSat, Jun 21, 10:38 PM HADT · 14703 days ago · 33 km deep · 9 km away
57. 4.4109 km SW of Atka, AlaskaSun, Jun 22, 6:35 AM HADT · 14702 days ago · 33 km deep · 6 km away
58. 4.6101 km SE of Adak, AlaskaSun, Jun 22, 9:01 AM HADT · 14702 days ago · 33 km deep · 37 km away
59. 4.383 km SW of Atka, AlaskaMon, Jun 23, 3:43 AM HADT · 14701 days ago · 33 km deep · 37 km away
60. 4.455 km SE of Adak, AlaskaSun, Jun 29, 8:49 PM HADT · 14695 days ago · 33 km deep · 60 km away

The first 60 of 71.

Before

1. 4.0110 km SSW of Atka, AlaskaTue, May 20, 2:49 AM HADT · 14735 days ago · 33 km deep · 12 km away
2. 4.898 km SSE of Adak, AlaskaTue, May 20, 2:08 AM HADT · 14735 days ago · 33 km deep · 91 km away
3. 4.9112 km ESE of Adak, AlaskaTue, May 20, 1:53 AM HADT · 14735 days ago · 33 km deep · 2 km away
4. 4.389 km SW of Atka, AlaskaTue, May 20, 1:12 AM HADT · 14735 days ago · 33 km deep · 26 km away
5. 4.0109 km SSW of Atka, AlaskaMon, May 19, 5:01 PM HADT · 14736 days ago · 33 km deep · 7 km away
6. 4.9110 km SSW of Atka, AlaskaMon, May 19, 11:52 AM HADT · 14736 days ago · 33 km deep · 33 km away
7. 3.851 km W of Atka, AlaskaMon, May 19, 2:35 AM HADT · 14736 days ago · 33 km deep · 84 km away
8. 4.021 km SW of Atka, AlaskaSun, May 18, 9:52 PM HADT · 14737 days ago · 33 km deep · 93 km away
9. 4.8106 km SE of Adak, AlaskaSun, May 18, 8:49 PM HADT · 14737 days ago · 33 km deep · 30 km away
10. 4.657 km W of Atka, AlaskaSun, May 18, 1:19 PM HADT · 14737 days ago · 33 km deep · 98 km away
11. 4.077 km SE of Adak, AlaskaSun, May 18, 11:24 AM HADT · 14737 days ago · 33 km deep · 50 km away
12. 4.774 km SSW of Atka, AlaskaSun, May 18, 10:14 AM HADT · 14737 days ago · 33 km deep · 41 km away
13. 4.984 km SW of Atka, AlaskaSun, May 18, 6:26 AM HADT · 14737 days ago · 33 km deep · 44 km away
14. 5.192 km SSW of Atka, AlaskaSun, May 18, 5:22 AM HADT · 14737 days ago · 33 km deep · 34 km away
15. 4.4106 km SSW of Atka, AlaskaSat, May 17, 9:15 PM HADT · 14738 days ago · 33 km deep · 9 km away
16. 4.677 km SSE of Adak, AlaskaSat, May 17, 1:16 PM HADT · 14738 days ago · 33 km deep · 61 km away
17. 4.5133 km SE of Adak, AlaskaSat, May 17, 4:11 AM HADT · 14738 days ago · 33 km deep · 37 km away
18. 3.880 km SE of Adak, AlaskaFri, May 16, 11:26 PM HADT · 14739 days ago · 33 km deep · 39 km away
19. 4.7Andreanof Islands, Aleutian Islands, AlaskaFri, May 16, 11:00 PM HADT · 14739 days ago · 33 km deep · 72 km away
20. 4.889 km SW of Atka, AlaskaFri, May 16, 1:12 PM HADT · 14739 days ago · 33 km deep · 32 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0002u7q. Read Tue, Sep 22, 2026, 9:36 PM UTC.