M2.1 earthquake 129 km W of Adak, Alaska

Magnitude

2.1 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Wed, Apr 20, 2016, 4:08 PM HADT

UTC

2016-04-21 01:08:41 UTC

Depth

7.9 km (4.9 mi), shallow

Epicenter

51.749° N, 178.495° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

21

After

1. 1.5128 km W of Adak, AlaskaWed, Apr 20, 4:19 PM HADT · 3820 days ago · 9 km deep · 3 km away
2. 1.7129 km W of Adak, AlaskaWed, Apr 20, 9:53 PM HADT · 3819 days ago · 9 km deep · 2 km away
3. 1.5130 km WSW of Adak, AlaskaWed, Apr 20, 11:42 PM HADT · 3819 days ago · 13 km deep · 10 km away
4. 2.3131 km W of Adak, AlaskaThu, Apr 21, 1:07 PM HADT · 3819 days ago · 7 km deep · 8 km away
5. 3.9122 km WSW of Adak, AlaskaThu, Apr 21, 1:28 PM HADT · 3819 days ago · 10 km deep · 15 km away
6. 2.1130 km W of Adak, AlaskaThu, Apr 21, 1:53 PM HADT · 3819 days ago · 13 km deep · 2 km away
7. 1.8131 km W of Adak, AlaskaThu, Apr 21, 1:58 PM HADT · 3819 days ago · 20 km deep · 3 km away
8. 2.1128 km W of Adak, AlaskaThu, Apr 21, 2:05 PM HADT · 3819 days ago · 13 km deep · 0 km away
9. 1.5128 km W of Adak, AlaskaThu, Apr 21, 2:37 PM HADT · 3819 days ago · 13 km deep · 0 km away
10. 2.5127 km W of Adak, AlaskaThu, Apr 21, 3:14 PM HADT · 3819 days ago · 10 km deep · 2 km away
11. 2.196 km SW of Adak, AlaskaThu, Apr 21, 4:36 PM HADT · 3819 days ago · 23 km deep · 65 km away
12. 1.9130 km WSW of Adak, AlaskaThu, Apr 21, 8:39 PM HADT · 3818 days ago · 7 km deep · 13 km away
13. 1.7132 km WSW of Adak, AlaskaFri, Apr 22, 4:37 AM HADT · 3818 days ago · 5 km deep · 14 km away
14. 1.6128 km W of Adak, AlaskaFri, Apr 22, 11:27 AM HADT · 3818 days ago · 6 km deep · 6 km away
15. 1.8109 km SW of Adak, AlaskaFri, Apr 22, 12:16 PM HADT · 3818 days ago · 24 km deep · 66 km away
16. 2.6201 km WSW of Adak, AlaskaFri, Apr 22, 1:54 PM HADT · 3818 days ago · 66 km deep · 76 km away
17. 1.9130 km W of Adak, AlaskaSat, Apr 23, 12:19 PM HADT · 3817 days ago · 15 km deep · 3 km away
18. 4.3131 km WSW of Adak, AlaskaSat, Apr 23, 2:02 PM HADT · 3817 days ago · 8 km deep · 12 km away
19. 1.654 km SW of Adak, AlaskaSun, Apr 24, 12:55 AM HADT · 3816 days ago · 39 km deep · 99 km away
20. 1.9143 km WSW of Adak, AlaskaSun, Apr 24, 1:29 AM HADT · 3816 days ago · 30 km deep · 20 km away
21. 1.6130 km W of Adak, AlaskaSun, Apr 24, 7:20 AM HADT · 3816 days ago · 16 km deep · 1 km away
22. 2.159 km SW of Adak, AlaskaSun, Apr 24, 11:16 AM HADT · 3816 days ago · 47 km deep · 82 km away
23. 2.2116 km W of Adak, AlaskaMon, Apr 25, 12:42 AM HADT · 3815 days ago · 76 km deep · 13 km away
24. 2.2186 km WSW of Adak, AlaskaMon, Apr 25, 2:25 AM HADT · 3815 days ago · 37 km deep · 75 km away
25. 2.3Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 25, 2:12 PM HADT · 3815 days ago · 15 km deep · 2 km away
26. 1.6128 km W of Adak, AlaskaMon, Apr 25, 2:53 PM HADT · 3815 days ago · 19 km deep · 5 km away
27. 2.5135 km WSW of Adak, AlaskaMon, Apr 25, 7:55 PM HADT · 3814 days ago · 22 km deep · 18 km away
28. 2.0118 km WSW of Adak, AlaskaWed, Apr 27, 3:18 PM HADT · 3813 days ago · 59 km deep · 28 km away
29. 1.848 km W of Adak, AlaskaWed, Apr 27, 11:07 PM HADT · 3812 days ago · 67 km deep · 80 km away
30. 1.656 km SW of Adak, AlaskaThu, Apr 28, 12:02 PM HADT · 3812 days ago · 46 km deep · 88 km away
31. 1.7129 km W of Adak, AlaskaThu, Apr 28, 6:20 PM HADT · 3811 days ago · 14 km deep · 5 km away
32. 2.7214 km W of Adak, AlaskaFri, Apr 29, 2:48 AM HADT · 3811 days ago · 111 km deep · 85 km away
33. 1.6113 km SW of Adak, AlaskaSat, Apr 30, 3:59 AM HADT · 3810 days ago · 6 km deep · 70 km away
34. 1.9133 km W of Adak, AlaskaSat, Apr 30, 1:24 PM HADT · 3810 days ago · 97 km deep · 26 km away
35. 2.4128 km W of Adak, AlaskaSat, Apr 30, 2:07 PM HADT · 3810 days ago · 6 km deep · 8 km away
36. 1.8129 km W of Adak, AlaskaSat, Apr 30, 2:08 PM HADT · 3810 days ago · 13 km deep · 3 km away
37. 1.7137 km WSW of Adak, AlaskaSat, Apr 30, 6:15 PM HADT · 3809 days ago · 54 km deep · 33 km away
38. 2.2107 km WSW of Adak, AlaskaSun, May 1, 7:23 AM HADT · 3809 days ago · 47 km deep · 58 km away
39. 2.5123 km WSW of Adak, AlaskaSun, May 1, 1:46 PM HADT · 3809 days ago · 26 km deep · 57 km away
40. 2.973 km WSW of Adak, AlaskaSun, May 1, 7:46 PM HADT · 3808 days ago · 26 km deep · 69 km away
41. 1.9131 km WSW of Adak, AlaskaMon, May 2, 3:31 PM HADT · 3808 days ago · 6 km deep · 12 km away
42. 2.5125 km WSW of Adak, AlaskaTue, May 3, 5:40 AM HADT · 3807 days ago · 26 km deep · 52 km away
43. 2.1182 km WSW of Adak, AlaskaTue, May 3, 6:49 AM HADT · 3807 days ago · 39 km deep · 74 km away
44. 1.7129 km W of Adak, AlaskaTue, May 3, 12:58 PM HADT · 3807 days ago · 9 km deep · 5 km away
45. 1.594 km WSW of Adak, AlaskaTue, May 3, 11:16 PM HADT · 3806 days ago · 31 km deep · 52 km away
46. 1.8129 km WSW of Adak, AlaskaTue, May 3, 11:33 PM HADT · 3806 days ago · 5 km deep · 11 km away
47. 2.0173 km WSW of Adak, AlaskaWed, May 4, 6:56 AM HADT · 3806 days ago · 27 km deep · 54 km away
48. 1.9100 km WSW of Adak, AlaskaFri, May 6, 3:35 AM HADT · 3804 days ago · 7 km deep · 39 km away
49. 3.3112 km SW of Adak, AlaskaFri, May 6, 7:28 AM HADT · 3804 days ago · 40 km deep · 67 km away
50. 3.1115 km SW of Adak, AlaskaFri, May 6, 7:30 AM HADT · 3804 days ago · 38 km deep · 69 km away
51. 3.6109 km WSW of Adak, AlaskaSun, May 8, 7:11 PM HADT · 3801 days ago · 44 km deep · 56 km away
52. 2.563 km SW of Adak, AlaskaMon, May 9, 6:59 AM HADT · 3801 days ago · 43 km deep · 90 km away
53. 1.9131 km W of Adak, AlaskaMon, May 9, 8:19 AM HADT · 3801 days ago · 8 km deep · 9 km away
54. 1.9123 km WSW of Adak, AlaskaMon, May 9, 8:29 AM HADT · 3801 days ago · 4 km deep · 13 km away
55. 2.0131 km WSW of Adak, AlaskaMon, May 9, 8:32 AM HADT · 3801 days ago · 14 km deep · 14 km away
56. 1.8132 km W of Adak, AlaskaMon, May 9, 8:51 AM HADT · 3801 days ago · 13 km deep · 10 km away
57. 2.2134 km W of Adak, AlaskaMon, May 9, 5:35 PM HADT · 3801 days ago · 100 km deep · 6 km away
58. 2.1128 km WSW of Adak, AlaskaTue, May 10, 12:18 AM HADT · 3800 days ago · 71 km deep · 12 km away
59. 1.9108 km WSW of Adak, AlaskaTue, May 10, 5:37 AM HADT · 3800 days ago · 44 km deep · 45 km away
60. 1.9149 km W of Adak, AlaskaTue, May 10, 6:42 AM HADT · 3800 days ago · 33 km deep · 21 km away

The first 60 of 180.

Before

1. 1.6130 km W of Adak, AlaskaTue, Apr 19, 10:41 PM HADT · 3820 days ago · 13 km deep · 2 km away
2. 1.7117 km SW of Adak, AlaskaTue, Apr 19, 8:55 PM HADT · 3820 days ago · 23 km deep · 68 km away
3. 2.1131 km WSW of Adak, AlaskaMon, Apr 18, 1:30 PM HADT · 3822 days ago · 6 km deep · 12 km away
4. 1.9133 km WSW of Adak, AlaskaMon, Apr 18, 1:28 PM HADT · 3822 days ago · 9 km deep · 15 km away
5. 3.0130 km WSW of Adak, AlaskaMon, Apr 18, 10:58 AM HADT · 3822 days ago · 28 km deep · 58 km away
6. 2.1141 km WSW of Adak, AlaskaMon, Apr 18, 9:31 AM HADT · 3822 days ago · 31 km deep · 53 km away
7. 2.5219 km WSW of Adak, AlaskaMon, Apr 18, 7:43 AM HADT · 3822 days ago · 77 km deep · 92 km away
8. 1.8126 km SW of Adak, AlaskaMon, Apr 18, 5:21 AM HADT · 3822 days ago · 21 km deep · 74 km away
9. 3.0117 km WSW of Adak, AlaskaMon, Apr 18, 5:05 AM HADT · 3822 days ago · 36 km deep · 54 km away
10. 2.0128 km W of Adak, AlaskaMon, Apr 18, 1:12 AM HADT · 3822 days ago · 4 km deep · 9 km away
11. 1.9131 km WSW of Adak, AlaskaSun, Apr 17, 6:18 PM HADT · 3822 days ago · 6 km deep · 11 km away
12. 3.0125 km W of Adak, AlaskaSun, Apr 17, 3:33 PM HADT · 3823 days ago · 11 km deep · 4 km away
13. 1.7130 km W of Adak, AlaskaSun, Apr 17, 11:56 AM HADT · 3823 days ago · 19 km deep · 15 km away
14. 2.0114 km W of Adak, AlaskaSun, Apr 17, 12:38 AM HADT · 3823 days ago · 24 km deep · 16 km away
15. 4.1206 km WSW of Adak, AlaskaSat, Apr 16, 11:24 AM HADT · 3824 days ago · 26 km deep · 86 km away
16. 2.337 km WSW of Adak, AlaskaFri, Apr 15, 11:57 PM HADT · 3824 days ago · 51 km deep · 97 km away
17. 1.7109 km WSW of Adak, AlaskaFri, Apr 15, 3:02 PM HADT · 3825 days ago · 52 km deep · 54 km away
18. 1.9133 km WSW of Adak, AlaskaFri, Apr 15, 1:03 PM HADT · 3825 days ago · 14 km deep · 11 km away
19. 2.898 km SW of Adak, AlaskaFri, Apr 15, 9:38 AM HADT · 3825 days ago · 23 km deep · 90 km away
20. 2.3101 km SW of Adak, AlaskaFri, Apr 15, 9:37 AM HADT · 3825 days ago · 26 km deep · 88 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak016558u3va (also filed as ak13488888). Read Mon, Oct 5, 2026, 2:43 PM UTC.