M4.2 earthquake 71 km SE of Adak, Alaska

Magnitude

4.2 (mb), light

Local time

Wed, Jun 18, 1986, 9:28 AM HADT

UTC

1986-06-18 18:28:40 UTC

Depth

33.0 km (20.5 mi), shallow

Epicenter

51.390° N, 175.950° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

After

1. 4.536 km SW of Adak, AlaskaWed, Jun 18, 12:47 PM HADT · 14713 days ago · 33 km deep · 73 km away
2. 4.576 km SE of Adak, AlaskaSat, Jun 21, 4:03 AM HADT · 14710 days ago · 33 km deep · 6 km away
3. 4.7100 km SSW of Atka, AlaskaSat, Jun 21, 6:38 AM HADT · 14710 days ago · 33 km deep · 79 km away
4. 5.4125 km SE of Adak, AlaskaSat, Jun 21, 8:28 PM HADT · 14709 days ago · 33 km deep · 57 km away
5. 4.4135 km SE of Adak, AlaskaSat, Jun 21, 8:33 PM HADT · 14709 days ago · 33 km deep · 65 km away
6. 4.887 km SW of Atka, AlaskaSat, Jun 21, 8:37 PM HADT · 14709 days ago · 33 km deep · 63 km away
7. 4.665 km WSW of Atka, AlaskaSat, Jun 21, 9:03 PM HADT · 14709 days ago · 33 km deep · 95 km away
8. 4.2118 km SSW of Atka, AlaskaSat, Jun 21, 10:38 PM HADT · 14709 days ago · 33 km deep · 57 km away
9. 4.263 km SW of Adak, AlaskaSun, Jun 22, 5:40 AM HADT · 14709 days ago · 33 km deep · 91 km away
10. 4.4109 km SW of Atka, AlaskaSun, Jun 22, 6:35 AM HADT · 14709 days ago · 33 km deep · 52 km away
11. 4.6101 km SE of Adak, AlaskaSun, Jun 22, 9:01 AM HADT · 14709 days ago · 33 km deep · 30 km away
12. 4.359 km SW of Adak, AlaskaMon, Jun 23, 12:39 AM HADT · 14708 days ago · 33 km deep · 86 km away
13. 4.383 km SW of Atka, AlaskaMon, Jun 23, 3:43 AM HADT · 14708 days ago · 33 km deep · 67 km away
14. 4.853 km S of Adak, AlaskaSun, Jun 29, 4:21 PM HADT · 14701 days ago · 33 km deep · 51 km away
15. 4.558 km S of Adak, AlaskaSun, Jun 29, 7:39 PM HADT · 14701 days ago · 33 km deep · 52 km away
16. 4.455 km SE of Adak, AlaskaSun, Jun 29, 8:49 PM HADT · 14701 days ago · 33 km deep · 23 km away
17. 5.475 km SSE of Adak, AlaskaSun, Jun 29, 9:23 PM HADT · 14701 days ago · 33 km deep · 21 km away
18. 4.236 km S of Adak, AlaskaSun, Jun 29, 9:28 PM HADT · 14701 days ago · 33 km deep · 48 km away
19. 4.093 km SSE of Adak, AlaskaSun, Jun 29, 9:33 PM HADT · 14701 days ago · 33 km deep · 35 km away
20. 4.291 km SSE of Adak, AlaskaSun, Jun 29, 9:55 PM HADT · 14701 days ago · 33 km deep · 33 km away
21. 4.484 km SSE of Adak, AlaskaSun, Jun 29, 9:58 PM HADT · 14701 days ago · 33 km deep · 27 km away
22. 4.761 km SW of Adak, AlaskaMon, Jun 30, 2:44 PM HADT · 14700 days ago · 33 km deep · 82 km away
23. 5.063 km SE of Adak, AlaskaThu, Jul 3, 8:33 AM HADT · 14698 days ago · 33 km deep · 12 km away
24. 4.975 km ESE of Adak, AlaskaThu, Jul 3, 8:58 PM HADT · 14697 days ago · 33 km deep · 20 km away
25. 4.569 km SE of Adak, AlaskaMon, Jul 7, 12:31 AM HADT · 14694 days ago · 33 km deep · 5 km away
26. 4.5Andreanof Islands, Aleutian Islands, AlaskaTue, Jul 8, 6:53 PM HADT · 14692 days ago · 33 km deep · 55 km away
27. 5.527 km E of Adak, AlaskaWed, Jul 9, 8:10 AM HADT · 14692 days ago · 50 km deep · 61 km away
28. 5.026 km SW of Adak, AlaskaWed, Jul 9, 11:24 AM HADT · 14692 days ago · 57 km deep · 71 km away
29. 4.888 km SSW of Atka, AlaskaThu, Jul 17, 9:37 AM HADT · 14684 days ago · 33 km deep · 95 km away
30. 4.0101 km SW of Atka, AlaskaSat, Jul 19, 4:42 AM HADT · 14682 days ago · 33 km deep · 56 km away
31. 4.879 km SE of Adak, AlaskaMon, Jul 21, 5:00 PM HADT · 14679 days ago · 33 km deep · 18 km away
32. 5.257 km SSE of Adak, AlaskaTue, Jul 22, 3:08 PM HADT · 14678 days ago · 33 km deep · 18 km away
33. 4.983 km SSE of Adak, AlaskaTue, Jul 22, 6:47 PM HADT · 14678 days ago · 33 km deep · 26 km away
34. 4.952 km S of Adak, AlaskaWed, Jul 23, 3:42 PM HADT · 14677 days ago · 33 km deep · 52 km away
35. 4.993 km SW of Atka, AlaskaThu, Jul 24, 5:03 AM HADT · 14677 days ago · 33 km deep · 57 km away
36. 5.876 km SSE of Adak, AlaskaFri, Jul 25, 12:01 AM HADT · 14676 days ago · 33 km deep · 22 km away
37. 5.683 km SSE of Adak, AlaskaFri, Jul 25, 12:04 AM HADT · 14676 days ago · 33 km deep · 19 km away
38. 4.669 km ESE of Adak, AlaskaFri, Jul 25, 1:06 AM HADT · 14676 days ago · 33 km deep · 46 km away
39. 4.793 km SSE of Adak, AlaskaFri, Jul 25, 2:27 PM HADT · 14675 days ago · 33 km deep · 26 km away
40. 4.497 km SSE of Adak, AlaskaSat, Jul 26, 6:18 PM HADT · 14674 days ago · 33 km deep · 39 km away
41. 4.844 km E of Adak, AlaskaSun, Jul 27, 7:54 PM HADT · 14673 days ago · 33 km deep · 54 km away
42. 5.588 km WSW of Atka, AlaskaMon, Jul 28, 12:57 PM HADT · 14673 days ago · 33 km deep · 62 km away
43. 4.785 km SW of Atka, AlaskaMon, Jul 28, 2:29 PM HADT · 14672 days ago · 33 km deep · 65 km away
44. 4.4Andreanof Islands, Aleutian Islands, AlaskaMon, Jul 28, 6:16 PM HADT · 14672 days ago · 33 km deep · 82 km away
45. 4.883 km SSE of Adak, AlaskaFri, Aug 1, 10:46 AM HADT · 14669 days ago · 33 km deep · 30 km away
46. 4.986 km SSE of Adak, AlaskaFri, Aug 1, 11:24 AM HADT · 14669 days ago · 33 km deep · 28 km away
47. 4.354 km SSE of Adak, AlaskaFri, Aug 1, 12:49 PM HADT · 14669 days ago · 33 km deep · 23 km away
48. 5.076 km SE of Adak, AlaskaFri, Aug 1, 9:37 PM HADT · 14668 days ago · 33 km deep · 9 km away
49. 4.795 km SSW of Atka, AlaskaSat, Aug 2, 10:58 AM HADT · 14668 days ago · 33 km deep · 83 km away
50. 5.979 km S of Adak, AlaskaSun, Aug 3, 4:29 AM HADT · 14667 days ago · 33 km deep · 64 km away
51. 4.784 km S of Adak, AlaskaSun, Aug 3, 4:44 AM HADT · 14667 days ago · 33 km deep · 61 km away
52. 4.987 km S of Adak, AlaskaSun, Aug 3, 11:08 AM HADT · 14667 days ago · 33 km deep · 62 km away
53. 4.780 km S of Adak, AlaskaSun, Aug 3, 12:36 PM HADT · 14667 days ago · 33 km deep · 58 km away
54. 4.3Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 9, 7:57 AM HADT · 14661 days ago · 33 km deep · 84 km away
55. 4.888 km SW of Atka, AlaskaThu, Aug 14, 5:28 AM HADT · 14656 days ago · 33 km deep · 62 km away

Before

1. 4.883 km SSE of Adak, AlaskaWed, Jun 18, 5:46 AM HADT · 14713 days ago · 33 km deep · 27 km away
2. 4.589 km SSE of Adak, AlaskaWed, Jun 18, 1:32 AM HADT · 14713 days ago · 33 km deep · 25 km away
3. 6.557 km S of Adak, AlaskaTue, Jun 17, 11:05 PM HADT · 14713 days ago · 27 km deep · 49 km away
4. 4.5104 km SW of Atka, AlaskaTue, Jun 17, 7:03 AM HADT · 14714 days ago · 33 km deep · 54 km away
5. 4.493 km ESE of Adak, AlaskaSun, Jun 15, 2:54 PM HADT · 14715 days ago · 33 km deep · 46 km away
6. 4.397 km SSW of Atka, AlaskaSat, Jun 14, 5:22 PM HADT · 14716 days ago · 33 km deep · 83 km away
7. 4.682 km SE of Adak, AlaskaTue, Jun 10, 8:57 AM HADT · 14721 days ago · 33 km deep · 13 km away
8. 4.577 km SE of Adak, AlaskaTue, Jun 10, 6:15 AM HADT · 14721 days ago · 33 km deep · 9 km away
9. 4.379 km SSE of Adak, AlaskaMon, Jun 9, 8:33 PM HADT · 14721 days ago · 33 km deep · 13 km away
10. 4.871 km SW of Atka, AlaskaSat, Jun 7, 8:17 PM HADT · 14723 days ago · 33 km deep · 85 km away
11. 4.885 km SSW of Atka, AlaskaSat, Jun 7, 6:58 AM HADT · 14724 days ago · 33 km deep · 77 km away
12. 4.461 km SW of Atka, AlaskaFri, Jun 6, 11:47 AM HADT · 14725 days ago · 33 km deep · 94 km away
13. 5.1106 km SE of Adak, AlaskaThu, Jun 5, 8:32 AM HADT · 14726 days ago · 33 km deep · 42 km away
14. 4.988 km SSW of Atka, AlaskaWed, Jun 4, 10:25 AM HADT · 14727 days ago · 33 km deep · 90 km away
15. 5.493 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14727 days ago · 33 km deep · 88 km away
16. 5.299 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14727 days ago · 33 km deep · 91 km away
17. 4.181 km SSE of Adak, AlaskaMon, Jun 2, 12:41 AM HADT · 14729 days ago · 33 km deep · 30 km away
18. 4.4105 km SSW of Atka, AlaskaSun, Jun 1, 5:35 PM HADT · 14729 days ago · 33 km deep · 63 km away
19. 4.575 km SSW of Atka, AlaskaSun, Jun 1, 3:42 PM HADT · 14729 days ago · 33 km deep · 95 km away
20. 4.247 km ENE of Adak, AlaskaSun, Jun 1, 12:12 PM HADT · 14730 days ago · 33 km deep · 78 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0002v60. Read Tue, Sep 29, 2026, 9:28 AM UTC.