M4.8 earthquake 98 km SE of Adak, Alaska

Magnitude

4.8 (mb), light

Local time

Wed, May 21, 1986, 8:30 AM HADT

UTC

1986-05-21 17:30:02 UTC

Depth

33.0 km (20.5 mi), shallow

Epicenter

51.329° N, 175.509° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

After

1. 4.885 km E of Adak, AlaskaWed, May 21, 1:12 PM HADT · 14741 days ago · 33 km deep · 56 km away
2. 4.573 km ESE of Adak, AlaskaThu, May 22, 2:48 AM HADT · 14740 days ago · 33 km deep · 30 km away
3. 4.5104 km SE of Adak, AlaskaThu, May 22, 7:24 AM HADT · 14740 days ago · 33 km deep · 15 km away
4. 4.989 km SSE of Adak, AlaskaThu, May 22, 10:19 PM HADT · 14739 days ago · 33 km deep · 48 km away
5. 4.689 km SSE of Adak, AlaskaSat, May 24, 7:44 AM HADT · 14738 days ago · 33 km deep · 54 km away
6. 4.655 km SW of Atka, AlaskaSat, May 24, 9:40 AM HADT · 14738 days ago · 33 km deep · 77 km away
7. 5.091 km SW of Atka, AlaskaSat, May 24, 3:33 PM HADT · 14738 days ago · 33 km deep · 43 km away
8. 4.892 km SSE of Adak, AlaskaSat, May 24, 10:16 PM HADT · 14737 days ago · 33 km deep · 43 km away
9. 4.763 km SSE of Adak, AlaskaSun, May 25, 10:23 AM HADT · 14737 days ago · 33 km deep · 44 km away
10. 4.896 km SSW of Atka, AlaskaSun, May 25, 2:32 PM HADT · 14737 days ago · 33 km deep · 50 km away
11. 4.752 km SSW of Atka, AlaskaMon, May 26, 2:00 PM HADT · 14736 days ago · 33 km deep · 83 km away
12. 4.3170 km SSW of Atka, AlaskaMon, May 26, 5:24 PM HADT · 14736 days ago · 33 km deep · 90 km away
13. 4.281 km SE of Adak, AlaskaTue, May 27, 12:36 AM HADT · 14735 days ago · 33 km deep · 18 km away
14. 4.962 km S of Atka, AlaskaTue, May 27, 5:16 AM HADT · 14735 days ago · 33 km deep · 90 km away
15. 4.881 km SSE of Adak, AlaskaWed, May 28, 4:20 AM HADT · 14734 days ago · 33 km deep · 41 km away
16. 4.992 km ESE of Adak, AlaskaThu, May 29, 10:18 AM HADT · 14733 days ago · 33 km deep · 39 km away
17. 4.8113 km SE of Adak, AlaskaThu, May 29, 3:52 PM HADT · 14733 days ago · 33 km deep · 15 km away
18. 4.386 km SE of Adak, AlaskaSat, May 31, 12:53 PM HADT · 14731 days ago · 33 km deep · 15 km away
19. 4.247 km ENE of Adak, AlaskaSun, Jun 1, 12:12 PM HADT · 14730 days ago · 33 km deep · 92 km away
20. 4.575 km SSW of Atka, AlaskaSun, Jun 1, 3:42 PM HADT · 14730 days ago · 33 km deep · 68 km away
21. 4.4105 km SSW of Atka, AlaskaSun, Jun 1, 5:35 PM HADT · 14730 days ago · 33 km deep · 33 km away
22. 4.181 km SSE of Adak, AlaskaMon, Jun 2, 12:41 AM HADT · 14729 days ago · 33 km deep · 52 km away
23. 5.299 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14728 days ago · 33 km deep · 60 km away
24. 5.493 km SSW of Atka, AlaskaTue, Jun 3, 2:05 PM HADT · 14728 days ago · 33 km deep · 58 km away
25. 5.038 km SW of Atka, AlaskaTue, Jun 3, 2:41 PM HADT · 14728 days ago · 33 km deep · 94 km away
26. 4.988 km SSW of Atka, AlaskaWed, Jun 4, 10:25 AM HADT · 14727 days ago · 33 km deep · 61 km away
27. 4.5123 km S of Atka, AlaskaThu, Jun 5, 5:22 AM HADT · 14726 days ago · 33 km deep · 85 km away
28. 4.765 km S of Atka, AlaskaThu, Jun 5, 6:24 AM HADT · 14726 days ago · 33 km deep · 94 km away
29. 5.1106 km SE of Adak, AlaskaThu, Jun 5, 8:32 AM HADT · 14726 days ago · 33 km deep · 11 km away
30. 5.377 km S of Atka, AlaskaThu, Jun 5, 11:27 AM HADT · 14726 days ago · 33 km deep · 89 km away
31. 4.461 km SW of Atka, AlaskaFri, Jun 6, 11:47 AM HADT · 14725 days ago · 33 km deep · 72 km away
32. 4.885 km SSW of Atka, AlaskaSat, Jun 7, 6:58 AM HADT · 14724 days ago · 33 km deep · 50 km away
33. 4.871 km SW of Atka, AlaskaSat, Jun 7, 8:17 PM HADT · 14723 days ago · 33 km deep · 62 km away
34. 4.379 km SSE of Adak, AlaskaMon, Jun 9, 8:33 PM HADT · 14721 days ago · 33 km deep · 35 km away
35. 4.577 km SE of Adak, AlaskaTue, Jun 10, 6:15 AM HADT · 14721 days ago · 33 km deep · 33 km away
36. 4.682 km SE of Adak, AlaskaTue, Jun 10, 8:57 AM HADT · 14721 days ago · 33 km deep · 19 km away
37. 4.397 km SSW of Atka, AlaskaSat, Jun 14, 5:22 PM HADT · 14717 days ago · 33 km deep · 53 km away
38. 4.493 km ESE of Adak, AlaskaSun, Jun 15, 2:54 PM HADT · 14716 days ago · 33 km deep · 31 km away
39. 4.5104 km SW of Atka, AlaskaTue, Jun 17, 7:03 AM HADT · 14714 days ago · 33 km deep · 28 km away
40. 6.557 km S of Adak, AlaskaTue, Jun 17, 11:05 PM HADT · 14713 days ago · 27 km deep · 80 km away
41. 4.589 km SSE of Adak, AlaskaWed, Jun 18, 1:32 AM HADT · 14713 days ago · 33 km deep · 39 km away
42. 4.883 km SSE of Adak, AlaskaWed, Jun 18, 5:46 AM HADT · 14713 days ago · 33 km deep · 47 km away
43. 4.271 km SE of Adak, AlaskaWed, Jun 18, 9:28 AM HADT · 14713 days ago · 33 km deep · 31 km away
44. 4.576 km SE of Adak, AlaskaSat, Jun 21, 4:03 AM HADT · 14710 days ago · 33 km deep · 26 km away
45. 4.7100 km SSW of Atka, AlaskaSat, Jun 21, 6:38 AM HADT · 14710 days ago · 33 km deep · 49 km away
46. 5.4125 km SE of Adak, AlaskaSat, Jun 21, 8:28 PM HADT · 14709 days ago · 33 km deep · 27 km away
47. 4.4135 km SE of Adak, AlaskaSat, Jun 21, 8:33 PM HADT · 14709 days ago · 33 km deep · 37 km away
48. 4.887 km SW of Atka, AlaskaSat, Jun 21, 8:37 PM HADT · 14709 days ago · 33 km deep · 47 km away
49. 4.665 km WSW of Atka, AlaskaSat, Jun 21, 9:03 PM HADT · 14709 days ago · 33 km deep · 87 km away
50. 4.2118 km SSW of Atka, AlaskaSat, Jun 21, 10:38 PM HADT · 14709 days ago · 33 km deep · 26 km away
51. 4.4109 km SW of Atka, AlaskaSun, Jun 22, 6:35 AM HADT · 14709 days ago · 33 km deep · 24 km away
52. 4.6101 km SE of Adak, AlaskaSun, Jun 22, 9:01 AM HADT · 14709 days ago · 33 km deep · 16 km away
53. 4.383 km SW of Atka, AlaskaMon, Jun 23, 3:43 AM HADT · 14708 days ago · 33 km deep · 50 km away
54. 4.853 km S of Adak, AlaskaSun, Jun 29, 4:21 PM HADT · 14702 days ago · 33 km deep · 82 km away
55. 4.558 km S of Adak, AlaskaSun, Jun 29, 7:39 PM HADT · 14702 days ago · 33 km deep · 82 km away
56. 4.455 km SE of Adak, AlaskaSun, Jun 29, 8:49 PM HADT · 14701 days ago · 33 km deep · 44 km away
57. 5.475 km SSE of Adak, AlaskaSun, Jun 29, 9:23 PM HADT · 14701 days ago · 33 km deep · 46 km away
58. 4.236 km S of Adak, AlaskaSun, Jun 29, 9:28 PM HADT · 14701 days ago · 33 km deep · 79 km away
59. 4.093 km SSE of Adak, AlaskaSun, Jun 29, 9:33 PM HADT · 14701 days ago · 33 km deep · 50 km away
60. 4.291 km SSE of Adak, AlaskaSun, Jun 29, 9:55 PM HADT · 14701 days ago · 33 km deep · 49 km away

The first 60 of 68.

Before

1. 4.668 km SSE of Adak, AlaskaTue, May 20, 10:05 PM HADT · 14741 days ago · 33 km deep · 47 km away
2. 3.875 km SE of Adak, AlaskaTue, May 20, 9:10 AM HADT · 14742 days ago · 33 km deep · 28 km away
3. 4.795 km S of Adak, AlaskaTue, May 20, 5:40 AM HADT · 14742 days ago · 33 km deep · 70 km away
4. 4.886 km S of Adak, AlaskaTue, May 20, 4:48 AM HADT · 14742 days ago · 33 km deep · 71 km away
5. 4.6113 km SW of Atka, AlaskaTue, May 20, 2:50 AM HADT · 14742 days ago · 33 km deep · 23 km away
6. 4.0110 km SSW of Atka, AlaskaTue, May 20, 2:49 AM HADT · 14742 days ago · 33 km deep · 34 km away
7. 4.898 km SSE of Adak, AlaskaTue, May 20, 2:08 AM HADT · 14742 days ago · 33 km deep · 69 km away
8. 4.9112 km ESE of Adak, AlaskaTue, May 20, 1:53 AM HADT · 14742 days ago · 33 km deep · 21 km away
9. 4.389 km SW of Atka, AlaskaTue, May 20, 1:12 AM HADT · 14742 days ago · 33 km deep · 43 km away
10. 4.0109 km SSW of Atka, AlaskaMon, May 19, 5:01 PM HADT · 14743 days ago · 33 km deep · 30 km away
11. 4.9110 km SSW of Atka, AlaskaMon, May 19, 11:52 AM HADT · 14743 days ago · 33 km deep · 54 km away
12. 3.851 km W of Atka, AlaskaMon, May 19, 2:35 AM HADT · 14743 days ago · 33 km deep · 96 km away
13. 4.8106 km SE of Adak, AlaskaSun, May 18, 8:49 PM HADT · 14743 days ago · 33 km deep · 13 km away
14. 4.077 km SE of Adak, AlaskaSun, May 18, 11:24 AM HADT · 14744 days ago · 33 km deep · 27 km away
15. 4.774 km SSW of Atka, AlaskaSun, May 18, 10:14 AM HADT · 14744 days ago · 33 km deep · 62 km away
16. 4.984 km SW of Atka, AlaskaSun, May 18, 6:26 AM HADT · 14744 days ago · 33 km deep · 53 km away
17. 5.192 km SSW of Atka, AlaskaSun, May 18, 5:22 AM HADT · 14744 days ago · 33 km deep · 58 km away
18. 4.555 km SSW of Adak, AlaskaSat, May 17, 11:01 PM HADT · 14744 days ago · 33 km deep · 92 km away
19. 4.4106 km SSW of Atka, AlaskaSat, May 17, 9:15 PM HADT · 14744 days ago · 33 km deep · 32 km away
20. 4.677 km SSE of Adak, AlaskaSat, May 17, 1:16 PM HADT · 14745 days ago · 33 km deep · 38 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0002u99. Read Tue, Sep 29, 2026, 4:18 PM UTC.