M1.8 earthquake 133 km WSW of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Sun, Aug 22, 2021, 2:53 AM HADT

UTC

2021-08-22 11:53:13 UTC

Depth

24.8 km (15.4 mi), shallow

Epicenter

51.282° N, 178.306° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

26

After

1. 1.5132 km WSW of Adak, AlaskaSun, Aug 22, 3:05 AM HADT · 1859 days ago · 25 km deep · 1 km away
2. 2.5135 km WSW of Adak, AlaskaSun, Aug 22, 4:32 AM HADT · 1859 days ago · 35 km deep · 3 km away
3. 1.5133 km WSW of Adak, AlaskaSun, Aug 22, 6:17 AM HADT · 1859 days ago · 26 km deep · 1 km away
4. 1.5133 km WSW of Adak, AlaskaSun, Aug 22, 8:39 AM HADT · 1859 days ago · 7 km deep · 40 km away
5. 1.550 km W of Adak, AlaskaSun, Aug 22, 9:16 PM HADT · 1858 days ago · 126 km deep · 100 km away
6. 2.055 km WSW of Adak, AlaskaMon, Aug 23, 2:13 AM HADT · 1858 days ago · 75 km deep · 81 km away
7. 1.7132 km WSW of Adak, AlaskaMon, Aug 23, 10:57 AM HADT · 1858 days ago · 27 km deep · 1 km away
8. 1.8106 km WSW of Adak, AlaskaMon, Aug 23, 2:28 PM HADT · 1858 days ago · 26 km deep · 27 km away
9. 1.5121 km SW of Adak, AlaskaMon, Aug 23, 5:48 PM HADT · 1857 days ago · 25 km deep · 24 km away
10. 1.9194 km WSW of Adak, AlaskaMon, Aug 23, 6:57 PM HADT · 1857 days ago · 13 km deep · 62 km away
11. 1.9135 km WSW of Adak, AlaskaTue, Aug 24, 3:05 AM HADT · 1857 days ago · 35 km deep · 3 km away
12. 3.6134 km WSW of Adak, AlaskaTue, Aug 24, 9:33 AM HADT · 1857 days ago · 41 km deep · 2 km away
13. 1.9201 km WSW of Adak, AlaskaTue, Aug 24, 12:02 PM HADT · 1857 days ago · 70 km deep · 85 km away
14. 2.5Andreanof Islands, Aleutian Islands, AlaskaTue, Aug 24, 6:05 PM HADT · 1856 days ago · 35 km deep · 51 km away
15. 3.4142 km WSW of Adak, AlaskaWed, Aug 25, 2:08 PM HADT · 1856 days ago · 17 km deep · 18 km away
16. 1.8137 km WSW of Adak, AlaskaWed, Aug 25, 3:59 PM HADT · 1856 days ago · 9 km deep · 29 km away
17. 1.5139 km WSW of Adak, AlaskaWed, Aug 25, 4:36 PM HADT · 1856 days ago · 22 km deep · 25 km away
18. 1.6141 km WSW of Adak, AlaskaWed, Aug 25, 9:06 PM HADT · 1855 days ago · 13 km deep · 25 km away
19. 1.9217 km WSW of Adak, AlaskaThu, Aug 26, 1:04 AM HADT · 1855 days ago · 6 km deep · 84 km away
20. 1.665 km SSW of Adak, AlaskaThu, Aug 26, 9:09 AM HADT · 1855 days ago · 48 km deep · 83 km away
21. 2.062 km SSW of Adak, AlaskaThu, Aug 26, 10:26 AM HADT · 1855 days ago · 29 km deep · 86 km away
22. 1.543 km SW of Adak, AlaskaFri, Aug 27, 11:02 AM HADT · 1854 days ago · 64 km deep · 91 km away
23. 1.5171 km W of Adak, AlaskaFri, Aug 27, 1:13 PM HADT · 1854 days ago · 5 km deep · 75 km away
24. 1.559 km W of Adak, AlaskaFri, Aug 27, 6:10 PM HADT · 1853 days ago · 7 km deep · 80 km away
25. 1.559 km W of Adak, AlaskaFri, Aug 27, 7:15 PM HADT · 1853 days ago · 12 km deep · 81 km away
26. 3.2122 km SW of Adak, AlaskaSat, Aug 28, 1:14 AM HADT · 1853 days ago · 27 km deep · 26 km away
27. 2.687 km WSW of Adak, AlaskaSat, Aug 28, 9:57 AM HADT · 1853 days ago · 33 km deep · 46 km away
28. 2.683 km SW of Adak, AlaskaSat, Aug 28, 12:01 PM HADT · 1853 days ago · 33 km deep · 51 km away
29. 1.8Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 28, 1:38 PM HADT · 1853 days ago · 13 km deep · 83 km away
30. 1.9141 km WSW of Adak, AlaskaSat, Aug 28, 2:03 PM HADT · 1853 days ago · 9 km deep · 25 km away
31. 1.597 km WSW of Adak, AlaskaSat, Aug 28, 2:05 PM HADT · 1853 days ago · 73 km deep · 41 km away
32. 1.759 km W of Adak, AlaskaSun, Aug 29, 2:12 AM HADT · 1852 days ago · 7 km deep · 81 km away
33. 1.8145 km WSW of Adak, AlaskaSun, Aug 29, 3:41 AM HADT · 1852 days ago · 23 km deep · 12 km away
34. 2.5141 km WSW of Adak, AlaskaSun, Aug 29, 8:29 PM HADT · 1851 days ago · 30 km deep · 17 km away
35. 1.9111 km WSW of Adak, AlaskaSun, Aug 29, 8:57 PM HADT · 1851 days ago · 13 km deep · 28 km away
36. 1.979 km SSW of Adak, AlaskaTue, Aug 31, 6:19 AM HADT · 1850 days ago · 28 km deep · 83 km away
37. 1.7215 km WSW of Adak, AlaskaTue, Aug 31, 9:40 AM HADT · 1850 days ago · 14 km deep · 83 km away
38. 1.6194 km WSW of Adak, AlaskaWed, Sep 1, 11:00 PM HADT · 1848 days ago · 5 km deep · 61 km away
39. 2.6221 km WSW of Adak, AlaskaThu, Sep 2, 3:19 AM HADT · 1848 days ago · 88 km deep · 100 km away
40. 1.5Andreanof Islands, Aleutian Islands, AlaskaFri, Sep 3, 3:43 AM HADT · 1847 days ago · 42 km deep · 41 km away
41. 1.5124 km WSW of Adak, AlaskaFri, Sep 3, 6:19 AM HADT · 1847 days ago · 7 km deep · 34 km away
42. 3.0123 km WSW of Adak, AlaskaSat, Sep 4, 3:07 PM HADT · 1846 days ago · 33 km deep · 16 km away
43. 1.8124 km WSW of Adak, AlaskaSat, Sep 4, 6:04 PM HADT · 1845 days ago · 70 km deep · 37 km away
44. 1.9134 km W of Adak, AlaskaSat, Sep 4, 10:19 PM HADT · 1845 days ago · 113 km deep · 73 km away
45. 1.7189 km WSW of Adak, AlaskaSun, Sep 5, 12:44 AM HADT · 1845 days ago · 3 km deep · 57 km away
46. 1.6124 km W of Adak, AlaskaSun, Sep 5, 1:14 AM HADT · 1845 days ago · 11 km deep · 61 km away
47. 1.766 km SW of Adak, AlaskaSun, Sep 5, 5:37 PM HADT · 1844 days ago · 74 km deep · 67 km away
48. 2.8199 km WSW of Adak, AlaskaMon, Sep 6, 6:00 AM HADT · 1844 days ago · 16 km deep · 66 km away
49. 1.6124 km SW of Adak, AlaskaTue, Sep 7, 6:53 AM HADT · 1843 days ago · 26 km deep · 24 km away
50. 2.9177 km WSW of Adak, AlaskaTue, Sep 7, 6:21 PM HADT · 1842 days ago · 30 km deep · 45 km away
51. 1.5185 km W of Adak, AlaskaTue, Sep 7, 8:33 PM HADT · 1842 days ago · 15 km deep · 93 km away
52. 1.8114 km WSW of Adak, AlaskaTue, Sep 7, 9:55 PM HADT · 1842 days ago · 15 km deep · 26 km away
53. 1.649 km SW of Adak, AlaskaTue, Sep 7, 11:09 PM HADT · 1842 days ago · 44 km deep · 88 km away
54. 1.6168 km WSW of Adak, AlaskaTue, Sep 7, 11:43 PM HADT · 1842 days ago · 26 km deep · 35 km away
55. 1.5155 km W of Adak, AlaskaWed, Sep 8, 6:01 AM HADT · 1842 days ago · 2 km deep · 70 km away
56. 2.9126 km SW of Adak, AlaskaThu, Sep 9, 2:23 PM HADT · 1841 days ago · 35 km deep · 23 km away
57. 2.1147 km SW of Adak, AlaskaThu, Sep 9, 2:43 PM HADT · 1841 days ago · 26 km deep · 31 km away
58. 1.5Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 9, 8:27 PM HADT · 1840 days ago · 59 km deep · 67 km away
59. 1.7169 km W of Adak, AlaskaFri, Sep 10, 10:30 PM HADT · 1839 days ago · 12 km deep · 74 km away
60. 1.5153 km WSW of Adak, AlaskaSat, Sep 11, 6:04 AM HADT · 1839 days ago · 14 km deep · 41 km away

The first 60 of 158.

Before

1. 3.4133 km WSW of Adak, AlaskaSun, Aug 22, 2:50 AM HADT · 1859 days ago · 35 km deep · 1 km away
2. 2.8132 km WSW of Adak, AlaskaSun, Aug 22, 2:47 AM HADT · 1859 days ago · 35 km deep · 5 km away
3. 4.0131 km WSW of Adak, AlaskaSun, Aug 22, 2:46 AM HADT · 1859 days ago · 35 km deep · 4 km away
4. 4.8128 km WSW of Adak, AlaskaSun, Aug 22, 2:45 AM HADT · 1859 days ago · 52 km deep · 14 km away · felt by 1
5. 3.064 km SSW of Adak, AlaskaSat, Aug 21, 3:02 PM HADT · 1860 days ago · 35 km deep · 92 km away
6. 1.668 km SW of Adak, AlaskaSat, Aug 21, 2:56 AM HADT · 1860 days ago · 51 km deep · 68 km away
7. 1.9156 km WSW of Adak, AlaskaThu, Aug 19, 10:20 PM HADT · 1861 days ago · 17 km deep · 24 km away
8. 1.7120 km WSW of Adak, AlaskaThu, Aug 19, 5:36 PM HADT · 1861 days ago · 66 km deep · 28 km away
9. 2.9113 km WSW of Adak, AlaskaThu, Aug 19, 11:16 AM HADT · 1862 days ago · 66 km deep · 26 km away
10. 1.6197 km WSW of Adak, AlaskaThu, Aug 19, 9:53 AM HADT · 1862 days ago · 75 km deep · 81 km away
11. 1.5137 km SSW of Adak, AlaskaThu, Aug 19, 2:42 AM HADT · 1862 days ago · 26 km deep · 64 km away
12. 1.8175 km WSW of Adak, AlaskaWed, Aug 18, 6:20 PM HADT · 1862 days ago · 72 km deep · 60 km away
13. 3.6141 km WSW of Adak, AlaskaWed, Aug 18, 1:26 PM HADT · 1863 days ago · 31 km deep · 9 km away
14. 2.5135 km WSW of Adak, AlaskaWed, Aug 18, 11:12 AM HADT · 1863 days ago · 35 km deep · 5 km away
15. 1.6121 km W of Adak, AlaskaWed, Aug 18, 5:17 AM HADT · 1863 days ago · 92 km deep · 52 km away
16. 1.956 km W of Adak, AlaskaWed, Aug 18, 3:50 AM HADT · 1863 days ago · 92 km deep · 83 km away
17. 2.3169 km W of Adak, AlaskaTue, Aug 17, 6:25 PM HADT · 1863 days ago · 243 km deep · 89 km away
18. 2.1128 km SW of Adak, AlaskaTue, Aug 17, 2:13 PM HADT · 1864 days ago · 26 km deep · 20 km away
19. 3.2216 km WSW of Adak, AlaskaTue, Aug 17, 10:27 AM HADT · 1864 days ago · 35 km deep · 97 km away
20. 1.6132 km WSW of Adak, AlaskaTue, Aug 17, 9:16 AM HADT · 1864 days ago · 7 km deep · 41 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021ar6md6y. Read Thu, Sep 24, 2026, 1:43 PM UTC.