M1.8 earthquake 81 km WSW of Adak, Alaska

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Fri, May 20, 2016, 4:14 AM HADT

UTC

2016-05-20 13:14:19 UTC

Depth

31.2 km (19.4 mi), shallow

Epicenter

51.517° N, 177.672° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

20

After

1. 1.934 km SSE of Adak, AlaskaFri, May 20, 10:00 AM HADT · 3789 days ago · 42 km deep · 88 km away
2. 2.0129 km WSW of Adak, AlaskaSat, May 21, 1:15 PM HADT · 3788 days ago · 5 km deep · 58 km away
3. 3.1136 km W of Adak, AlaskaSat, May 21, 8:26 PM HADT · 3788 days ago · 27 km deep · 70 km away
4. 1.7126 km WSW of Adak, AlaskaSun, May 22, 5:23 AM HADT · 3787 days ago · 7 km deep · 53 km away
5. 1.5131 km WSW of Adak, AlaskaSun, May 22, 7:28 AM HADT · 3787 days ago · 7 km deep · 58 km away
6. 1.5116 km WSW of Adak, AlaskaSun, May 22, 3:31 PM HADT · 3787 days ago · 4 km deep · 45 km away
7. 1.7113 km WSW of Adak, AlaskaMon, May 23, 3:24 AM HADT · 3786 days ago · 43 km deep · 32 km away
8. 1.6130 km WSW of Adak, AlaskaMon, May 23, 2:18 PM HADT · 3786 days ago · 18 km deep · 58 km away
9. 1.8154 km WSW of Adak, AlaskaMon, May 23, 11:42 PM HADT · 3786 days ago · 63 km deep · 80 km away
10. 1.9172 km WSW of Adak, AlaskaTue, May 24, 2:25 AM HADT · 3785 days ago · 41 km deep · 97 km away
11. 2.521 km NW of Adak, AlaskaTue, May 24, 5:10 PM HADT · 3785 days ago · 140 km deep · 81 km away
12. 2.362 km SW of Adak, AlaskaTue, May 24, 11:48 PM HADT · 3785 days ago · 34 km deep · 24 km away
13. 2.8132 km W of Adak, AlaskaWed, May 25, 3:54 AM HADT · 3784 days ago · 13 km deep · 61 km away
14. 2.0130 km W of Adak, AlaskaWed, May 25, 6:28 PM HADT · 3784 days ago · 9 km deep · 62 km away
15. 2.9100 km WSW of Adak, AlaskaThu, May 26, 12:54 PM HADT · 3783 days ago · 44 km deep · 20 km away
16. 2.233 km SSE of Adak, AlaskaThu, May 26, 1:18 PM HADT · 3783 days ago · 41 km deep · 87 km away
17. 1.672 km WSW of Adak, AlaskaThu, May 26, 8:05 PM HADT · 3783 days ago · 51 km deep · 14 km away
18. 2.3101 km SW of Adak, AlaskaFri, May 27, 2:09 AM HADT · 3782 days ago · 30 km deep · 40 km away
19. 2.5103 km WNW of Adak, AlaskaFri, May 27, 4:33 AM HADT · 3782 days ago · 210 km deep · 69 km away
20. 1.7123 km SW of Adak, AlaskaFri, May 27, 12:21 PM HADT · 3782 days ago · 17 km deep · 45 km away
21. 1.6130 km W of Adak, AlaskaFri, May 27, 9:09 PM HADT · 3782 days ago · 2 km deep · 59 km away
22. 1.876 km SW of Adak, AlaskaSat, May 28, 5:12 PM HADT · 3781 days ago · 39 km deep · 19 km away
23. 1.8137 km WSW of Adak, AlaskaSat, May 28, 11:38 PM HADT · 3781 days ago · 35 km deep · 56 km away
24. 2.5148 km WSW of Adak, AlaskaSun, May 29, 5:37 PM HADT · 3780 days ago · 25 km deep · 66 km away
25. 2.6128 km WSW of Adak, AlaskaMon, May 30, 6:03 PM HADT · 3779 days ago · 30 km deep · 47 km away
26. 1.8129 km W of Adak, AlaskaTue, May 31, 3:53 PM HADT · 3778 days ago · 24 km deep · 63 km away
27. 1.8132 km W of Adak, AlaskaTue, May 31, 5:57 PM HADT · 3778 days ago · 11 km deep · 77 km away
28. 2.4107 km WSW of Adak, AlaskaWed, Jun 1, 5:15 PM HADT · 3777 days ago · 44 km deep · 27 km away
29. 2.9Andreanof Islands, Aleutian Islands, AlaskaThu, Jun 2, 7:28 AM HADT · 3776 days ago · 30 km deep · 56 km away
30. 2.0135 km W of Adak, AlaskaThu, Jun 2, 10:16 AM HADT · 3776 days ago · 27 km deep · 69 km away
31. 2.8107 km SW of Adak, AlaskaThu, Jun 2, 3:28 PM HADT · 3776 days ago · 29 km deep · 31 km away
32. 2.2121 km WSW of Adak, AlaskaThu, Jun 2, 10:27 PM HADT · 3776 days ago · 13 km deep · 41 km away
33. 2.2166 km WSW of Adak, AlaskaThu, Jun 2, 10:55 PM HADT · 3776 days ago · 18 km deep · 86 km away
34. 1.7122 km WSW of Adak, AlaskaFri, Jun 3, 3:39 PM HADT · 3775 days ago · 19 km deep · 42 km away
35. 2.497 km SW of Adak, AlaskaSat, Jun 4, 12:55 AM HADT · 3774 days ago · 37 km deep · 28 km away
36. 1.654 km S of Adak, AlaskaSat, Jun 4, 4:35 PM HADT · 3774 days ago · 33 km deep · 78 km away
37. 1.9160 km WSW of Adak, AlaskaSat, Jun 4, 10:30 PM HADT · 3774 days ago · 35 km deep · 83 km away
38. 1.8111 km WSW of Adak, AlaskaSat, Jun 4, 11:08 PM HADT · 3774 days ago · 10 km deep · 31 km away
39. 1.8110 km WSW of Adak, AlaskaSun, Jun 5, 12:46 AM HADT · 3773 days ago · 48 km deep · 29 km away
40. 1.7143 km WSW of Adak, AlaskaSun, Jun 5, 1:56 AM HADT · 3773 days ago · 51 km deep · 67 km away
41. 1.935 km SE of Adak, AlaskaSun, Jun 5, 3:46 AM HADT · 3773 days ago · 50 km deep · 97 km away
42. 1.6112 km WSW of Adak, AlaskaSun, Jun 5, 10:37 AM HADT · 3773 days ago · 13 km deep · 37 km away
43. 2.140 km SW of Adak, AlaskaSun, Jun 5, 12:58 PM HADT · 3773 days ago · 50 km deep · 43 km away
44. 1.5120 km WSW of Adak, AlaskaMon, Jun 6, 3:12 AM HADT · 3772 days ago · 18 km deep · 41 km away
45. 2.038 km SW of Adak, AlaskaMon, Jun 6, 7:16 AM HADT · 3772 days ago · 54 km deep · 49 km away
46. 1.541 km SSW of Adak, AlaskaMon, Jun 6, 8:41 AM HADT · 3772 days ago · 43 km deep · 59 km away
47. 2.390 km S of Adak, AlaskaMon, Jun 6, 8:51 AM HADT · 3772 days ago · 16 km deep · 92 km away
48. 1.7121 km W of Adak, AlaskaTue, Jun 7, 8:11 AM HADT · 3771 days ago · 19 km deep · 60 km away
49. 2.6128 km W of Adak, AlaskaWed, Jun 8, 8:16 AM HADT · 3770 days ago · 13 km deep · 68 km away
50. 1.9127 km WSW of Adak, AlaskaWed, Jun 8, 8:36 AM HADT · 3770 days ago · 27 km deep · 46 km away
51. 1.673 km SW of Adak, AlaskaWed, Jun 8, 11:09 AM HADT · 3770 days ago · 35 km deep · 21 km away
52. 1.531 km SSE of Adak, AlaskaThu, Jun 9, 9:55 AM HADT · 3769 days ago · 35 km deep · 88 km away
53. 2.450 km SSE of Adak, AlaskaThu, Jun 9, 10:16 AM HADT · 3769 days ago · 37 km deep · 90 km away
54. 1.562 km W of Adak, AlaskaThu, Jun 9, 4:25 PM HADT · 3769 days ago · 82 km deep · 44 km away
55. 1.7Andreanof Islands, Aleutian Islands, AlaskaFri, Jun 10, 12:16 AM HADT · 3768 days ago · 75 km deep · 61 km away
56. 1.835 km SSE of Adak, AlaskaFri, Jun 10, 2:01 AM HADT · 3768 days ago · 43 km deep · 91 km away
57. 2.0111 km SW of Adak, AlaskaFri, Jun 10, 3:52 AM HADT · 3768 days ago · 36 km deep · 33 km away
58. 1.6Andreanof Islands, Aleutian Islands, AlaskaFri, Jun 10, 1:32 PM HADT · 3768 days ago · 26 km deep · 91 km away
59. 2.1160 km W of Adak, AlaskaFri, Jun 10, 3:08 PM HADT · 3768 days ago · 9 km deep · 93 km away
60. 2.2163 km WSW of Adak, AlaskaFri, Jun 10, 9:58 PM HADT · 3768 days ago · 79 km deep · 88 km away

The first 60 of 197.

Before

1. 2.387 km SW of Adak, AlaskaFri, May 20, 3:44 AM HADT · 3789 days ago · 59 km deep · 38 km away
2. 1.7100 km SW of Adak, AlaskaThu, May 19, 8:09 PM HADT · 3790 days ago · 43 km deep · 23 km away
3. 1.988 km WSW of Adak, AlaskaThu, May 19, 8:32 AM HADT · 3790 days ago · 68 km deep · 15 km away
4. 1.637 km SSE of Adak, AlaskaThu, May 19, 7:58 AM HADT · 3790 days ago · 44 km deep · 92 km away
5. 2.1125 km WSW of Adak, AlaskaThu, May 19, 5:44 AM HADT · 3790 days ago · 30 km deep · 44 km away
6. 2.4122 km WSW of Adak, AlaskaWed, May 18, 7:07 PM HADT · 3791 days ago · 32 km deep · 40 km away
7. 3.5130 km WSW of Adak, AlaskaWed, May 18, 4:11 PM HADT · 3791 days ago · 36 km deep · 48 km away
8. 2.5130 km WSW of Adak, AlaskaWed, May 18, 12:04 AM HADT · 3792 days ago · 39 km deep · 49 km away
9. 2.336 km SSW of Adak, AlaskaTue, May 17, 4:57 AM HADT · 3792 days ago · 38 km deep · 61 km away
10. 2.132 km SSW of Adak, AlaskaTue, May 17, 3:47 AM HADT · 3792 days ago · 40 km deep · 58 km away
11. 1.6110 km WSW of Adak, AlaskaTue, May 17, 2:41 AM HADT · 3792 days ago · 27 km deep · 31 km away
12. 2.5176 km WSW of Adak, AlaskaMon, May 16, 5:35 PM HADT · 3793 days ago · 8 km deep · 95 km away
13. 2.3177 km WSW of Adak, AlaskaMon, May 16, 2:00 PM HADT · 3793 days ago · 16 km deep · 97 km away
14. 2.1130 km W of Adak, AlaskaMon, May 16, 8:42 AM HADT · 3793 days ago · 10 km deep · 60 km away
15. 2.0128 km WSW of Adak, AlaskaMon, May 16, 6:27 AM HADT · 3793 days ago · 8 km deep · 56 km away
16. 1.9111 km SW of Adak, AlaskaSun, May 15, 5:53 AM HADT · 3794 days ago · 41 km deep · 34 km away
17. 2.173 km WSW of Adak, AlaskaSun, May 15, 1:42 AM HADT · 3794 days ago · 23 km deep · 12 km away
18. 2.2119 km WSW of Adak, AlaskaSat, May 14, 9:43 PM HADT · 3795 days ago · 27 km deep · 38 km away
19. 2.7121 km WSW of Adak, AlaskaSat, May 14, 6:25 AM HADT · 3795 days ago · 21 km deep · 40 km away
20. 1.556 km SSE of Adak, AlaskaSat, May 14, 6:05 AM HADT · 3795 days ago · 21 km deep · 92 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak0166helm1m (also filed as ak13595696). Read Sun, Oct 4, 2026, 8:39 PM UTC.