M1.6 earthquake 64 km ENE of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Sun, Aug 22, 2021, 3:51 AM HADT

UTC

2021-08-22 12:51:26 UTC

Depth

11.8 km (7.3 mi), shallow

Epicenter

52.082° N, 175.762° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

28

After

1. 3.067 km E of Adak, AlaskaSun, Aug 22, 9:54 PM HADT · 1858 days ago · 71 km deep · 28 km away
2. 1.980 km SE of Adak, AlaskaSun, Aug 22, 10:10 PM HADT · 1858 days ago · 26 km deep · 73 km away
3. 1.934 km SSW of Atka, AlaskaSun, Aug 22, 10:38 PM HADT · 1858 days ago · 71 km deep · 90 km away
4. 1.657 km ENE of Adak, AlaskaMon, Aug 23, 12:08 PM HADT · 1858 days ago · 175 km deep · 11 km away
5. 1.645 km E of Adak, AlaskaMon, Aug 23, 6:19 PM HADT · 1857 days ago · 68 km deep · 34 km away
6. 2.938 km SSW of Adak, AlaskaTue, Aug 24, 1:17 AM HADT · 1857 days ago · 39 km deep · 96 km away
7. 1.696 km ESE of Adak, AlaskaTue, Aug 24, 10:56 PM HADT · 1856 days ago · 26 km deep · 60 km away
8. 2.020 km WSW of Adak, AlaskaWed, Aug 25, 12:04 AM HADT · 1856 days ago · 77 km deep · 84 km away
9. 2.8Andreanof Islands, Aleutian Islands, AlaskaWed, Aug 25, 12:10 AM HADT · 1856 days ago · 219 km deep · 74 km away
10. 1.871 km E of Adak, AlaskaWed, Aug 25, 10:38 AM HADT · 1856 days ago · 149 km deep · 26 km away
11. 1.675 km SE of Adak, AlaskaWed, Aug 25, 11:19 AM HADT · 1856 days ago · 18 km deep · 71 km away
12. 3.668 km ESE of Adak, AlaskaWed, Aug 25, 5:07 PM HADT · 1855 days ago · 35 km deep · 58 km away
13. 1.829 km SSE of Adak, AlaskaWed, Aug 25, 8:39 PM HADT · 1855 days ago · 45 km deep · 69 km away
14. 1.662 km SE of Adak, AlaskaThu, Aug 26, 3:12 AM HADT · 1855 days ago · 26 km deep · 77 km away
15. 1.773 km WSW of Atka, AlaskaThu, Aug 26, 10:45 AM HADT · 1855 days ago · 73 km deep · 39 km away
16. 1.796 km ESE of Adak, AlaskaThu, Aug 26, 3:50 PM HADT · 1854 days ago · 29 km deep · 61 km away
17. 3.534 km S of Adak, AlaskaSat, Aug 28, 7:12 AM HADT · 1853 days ago · 46 km deep · 80 km away
18. 1.942 km NE of Adak, AlaskaSat, Aug 28, 1:34 PM HADT · 1853 days ago · 189 km deep · 29 km away
19. 1.689 km SE of Adak, AlaskaSat, Aug 28, 2:52 PM HADT · 1853 days ago · 26 km deep · 77 km away
20. 1.578 km W of Atka, AlaskaSat, Aug 28, 7:16 PM HADT · 1852 days ago · 110 km deep · 29 km away
21. 1.758 km SSE of Adak, AlaskaSat, Aug 28, 10:08 PM HADT · 1852 days ago · 24 km deep · 88 km away
22. 1.772 km WSW of Atka, AlaskaSun, Aug 29, 11:45 AM HADT · 1852 days ago · 122 km deep · 36 km away
23. 1.658 km SE of Adak, AlaskaSun, Aug 29, 1:04 PM HADT · 1852 days ago · 33 km deep · 64 km away
24. 1.846 km NNW of Adak, AlaskaSun, Aug 29, 5:06 PM HADT · 1851 days ago · 138 km deep · 86 km away
25. 1.748 km E of Adak, AlaskaMon, Aug 30, 8:38 AM HADT · 1851 days ago · 149 km deep · 31 km away
26. 2.717 km SE of Adak, AlaskaMon, Aug 30, 2:52 PM HADT · 1851 days ago · 112 km deep · 63 km away
27. 4.3116 km NW of Atka, AlaskaMon, Aug 30, 5:17 PM HADT · 1850 days ago · 255 km deep · 88 km away
28. 3.684 km E of Adak, AlaskaMon, Aug 30, 9:28 PM HADT · 1850 days ago · 64 km deep · 38 km away
29. 1.676 km ESE of Adak, AlaskaTue, Aug 31, 12:26 AM HADT · 1850 days ago · 19 km deep · 42 km away
30. 3.246 km ENE of Adak, AlaskaWed, Sep 1, 12:46 PM HADT · 1849 days ago · 137 km deep · 18 km away
31. 3.262 km SE of Adak, AlaskaWed, Sep 1, 5:48 PM HADT · 1848 days ago · 26 km deep · 79 km away
32. 2.958 km E of Adak, AlaskaWed, Sep 1, 7:01 PM HADT · 1848 days ago · 156 km deep · 12 km away
33. 1.641 km SSE of Adak, AlaskaWed, Sep 1, 10:42 PM HADT · 1848 days ago · 34 km deep · 72 km away
34. 1.652 km ENE of Adak, AlaskaWed, Sep 1, 10:54 PM HADT · 1848 days ago · 148 km deep · 13 km away
35. 1.512 km SE of Adak, AlaskaThu, Sep 2, 2:30 AM HADT · 1848 days ago · 153 km deep · 59 km away
36. 1.558 km SE of Adak, AlaskaThu, Sep 2, 5:10 PM HADT · 1847 days ago · 48 km deep · 65 km away
37. 2.018 km W of Atka, AlaskaFri, Sep 3, 1:37 AM HADT · 1847 days ago · 170 km deep · 89 km away
38. 1.710 km SSE of Adak, AlaskaFri, Sep 3, 2:30 AM HADT · 1847 days ago · 156 km deep · 65 km away
39. 1.560 km SE of Adak, AlaskaFri, Sep 3, 7:04 PM HADT · 1846 days ago · 27 km deep · 65 km away
40. 2.588 km ESE of Adak, AlaskaSat, Sep 4, 10:10 AM HADT · 1846 days ago · 58 km deep · 49 km away
41. 1.933 km ESE of Adak, AlaskaSat, Sep 4, 8:52 PM HADT · 1845 days ago · 61 km deep · 50 km away
42. 1.570 km SSE of Adak, AlaskaSat, Sep 4, 10:36 PM HADT · 1845 days ago · 18 km deep · 94 km away
43. 1.951 km ENE of Adak, AlaskaSun, Sep 5, 2:05 AM HADT · 1845 days ago · 163 km deep · 13 km away
44. 1.674 km ENE of Adak, AlaskaSun, Sep 5, 9:37 PM HADT · 1844 days ago · 149 km deep · 11 km away
45. 1.561 km W of Atka, AlaskaMon, Sep 6, 7:27 AM HADT · 1844 days ago · 13 km deep · 46 km away
46. 3.367 km ESE of Adak, AlaskaMon, Sep 6, 12:23 PM HADT · 1844 days ago · 39 km deep · 59 km away
47. 1.774 km ENE of Adak, AlaskaMon, Sep 6, 4:41 PM HADT · 1843 days ago · 137 km deep · 11 km away
48. 1.960 km ENE of Adak, AlaskaMon, Sep 6, 5:02 PM HADT · 1843 days ago · 150 km deep · 4 km away
49. 1.663 km SSE of Adak, AlaskaMon, Sep 6, 11:07 PM HADT · 1843 days ago · 19 km deep · 85 km away
50. 1.962 km SE of Adak, AlaskaTue, Sep 7, 9:12 AM HADT · 1843 days ago · 26 km deep · 74 km away
51. 2.114 km NW of Atka, AlaskaTue, Sep 7, 10:16 AM HADT · 1843 days ago · 155 km deep · 99 km away
52. 2.278 km ENE of Adak, AlaskaWed, Sep 8, 2:59 AM HADT · 1842 days ago · 236 km deep · 15 km away
53. 1.739 km NE of Adak, AlaskaWed, Sep 8, 3:11 AM HADT · 1842 days ago · 132 km deep · 31 km away
54. 1.972 km SSW of Atka, AlaskaWed, Sep 8, 7:43 PM HADT · 1841 days ago · 22 km deep · 90 km away
55. 1.651 km E of Adak, AlaskaWed, Sep 8, 9:32 PM HADT · 1841 days ago · 93 km deep · 17 km away
56. 3.689 km SW of Atka, AlaskaThu, Sep 9, 2:44 PM HADT · 1841 days ago · 35 km deep · 74 km away
57. 3.7101 km ESE of Adak, AlaskaFri, Sep 10, 5:00 AM HADT · 1840 days ago · 35 km deep · 78 km away
58. 2.957 km SSE of Adak, AlaskaSun, Sep 12, 5:44 AM HADT · 1838 days ago · 35 km deep · 77 km away
59. 1.756 km SE of Adak, AlaskaTue, Sep 14, 6:24 PM HADT · 1835 days ago · 13 km deep · 74 km away
60. 1.660 km SE of Adak, AlaskaTue, Sep 14, 6:47 PM HADT · 1835 days ago · 13 km deep · 77 km away

The first 60 of 112.

Before

1. 1.915 km NE of Adak, AlaskaSun, Aug 22, 3:16 AM HADT · 1859 days ago · 151 km deep · 50 km away
2. 1.921 km SW of Atka, AlaskaSun, Aug 22, 12:28 AM HADT · 1859 days ago · 9 km deep · 91 km away
3. 3.2Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 21, 4:15 PM HADT · 1859 days ago · 35 km deep · 87 km away
4. 1.610 km SW of Adak, AlaskaSat, Aug 21, 11:52 AM HADT · 1860 days ago · 81 km deep · 74 km away
5. 1.742 km SW of Atka, AlaskaSat, Aug 21, 3:05 AM HADT · 1860 days ago · 53 km deep · 81 km away
6. 3.464 km SE of Adak, AlaskaThu, Aug 19, 2:20 PM HADT · 1862 days ago · 35 km deep · 69 km away
7. 1.863 km W of Atka, AlaskaThu, Aug 19, 10:05 AM HADT · 1862 days ago · 170 km deep · 46 km away
8. 2.053 km ENE of Adak, AlaskaThu, Aug 19, 3:58 AM HADT · 1862 days ago · 146 km deep · 11 km away
9. 1.572 km SSE of Adak, AlaskaWed, Aug 18, 10:51 PM HADT · 1862 days ago · 21 km deep · 99 km away
10. 1.573 km WSW of Atka, AlaskaWed, Aug 18, 12:02 PM HADT · 1863 days ago · 64 km deep · 44 km away
11. 1.514 km SSE of Adak, AlaskaWed, Aug 18, 2:44 AM HADT · 1863 days ago · 80 km deep · 63 km away
12. 3.183 km E of Adak, AlaskaSun, Aug 15, 11:11 PM HADT · 1865 days ago · 73 km deep · 40 km away
13. 1.560 km SE of Adak, AlaskaFri, Aug 13, 5:37 PM HADT · 1867 days ago · 22 km deep · 75 km away
14. 1.539 km SSW of Adak, AlaskaFri, Aug 13, 4:55 PM HADT · 1867 days ago · 12 km deep · 99 km away
15. 1.620 km SE of Adak, AlaskaFri, Aug 13, 3:40 PM HADT · 1868 days ago · 71 km deep · 61 km away
16. 2.9Andreanof Islands, Aleutian Islands, AlaskaFri, Aug 13, 2:37 PM HADT · 1868 days ago · 33 km deep · 79 km away
17. 3.142 km S of Adak, AlaskaFri, Aug 13, 8:38 AM HADT · 1868 days ago · 69 km deep · 84 km away
18. 1.653 km SSW of Atka, AlaskaThu, Aug 12, 9:20 PM HADT · 1868 days ago · 15 km deep · 99 km away
19. 1.574 km E of Adak, AlaskaThu, Aug 12, 12:57 PM HADT · 1869 days ago · 22 km deep · 35 km away
20. 1.741 km ENE of Adak, AlaskaThu, Aug 12, 10:06 AM HADT · 1869 days ago · 6 km deep · 23 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021ar77eg7 (also filed as av91346146). Read Thu, Sep 24, 2026, 12:16 PM UTC.