M1.8 earthquake 137 km WSW of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Wed, Aug 25, 2021, 3:59 PM HADT

UTC

2021-08-26 00:59:14 UTC

Depth

9.4 km (5.8 mi), shallow

Epicenter

51.497° N, 178.530° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

31

After

1. 1.5139 km WSW of Adak, AlaskaWed, Aug 25, 4:36 PM HADT · 1856 days ago · 22 km deep · 5 km away
2. 1.6141 km WSW of Adak, AlaskaWed, Aug 25, 9:06 PM HADT · 1855 days ago · 13 km deep · 7 km away
3. 1.9217 km WSW of Adak, AlaskaThu, Aug 26, 1:04 AM HADT · 1855 days ago · 6 km deep · 86 km away
4. 1.665 km SSW of Adak, AlaskaThu, Aug 26, 9:09 AM HADT · 1855 days ago · 48 km deep · 98 km away
5. 1.543 km SW of Adak, AlaskaFri, Aug 27, 11:02 AM HADT · 1854 days ago · 64 km deep · 100 km away
6. 1.5171 km W of Adak, AlaskaFri, Aug 27, 1:13 PM HADT · 1854 days ago · 5 km deep · 48 km away
7. 1.559 km W of Adak, AlaskaFri, Aug 27, 6:10 PM HADT · 1854 days ago · 7 km deep · 79 km away
8. 1.559 km W of Adak, AlaskaFri, Aug 27, 7:15 PM HADT · 1854 days ago · 12 km deep · 80 km away
9. 3.2122 km SW of Adak, AlaskaSat, Aug 28, 1:14 AM HADT · 1853 days ago · 27 km deep · 53 km away
10. 2.687 km WSW of Adak, AlaskaSat, Aug 28, 9:57 AM HADT · 1853 days ago · 33 km deep · 55 km away
11. 2.683 km SW of Adak, AlaskaSat, Aug 28, 12:01 PM HADT · 1853 days ago · 33 km deep · 65 km away
12. 1.8Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 28, 1:38 PM HADT · 1853 days ago · 13 km deep · 81 km away
13. 1.9141 km WSW of Adak, AlaskaSat, Aug 28, 2:03 PM HADT · 1853 days ago · 9 km deep · 6 km away
14. 1.597 km WSW of Adak, AlaskaSat, Aug 28, 2:05 PM HADT · 1853 days ago · 73 km deep · 40 km away
15. 1.8211 km W of Adak, AlaskaSat, Aug 28, 6:19 PM HADT · 1853 days ago · 92 km deep · 84 km away
16. 1.759 km W of Adak, AlaskaSun, Aug 29, 2:12 AM HADT · 1852 days ago · 7 km deep · 80 km away
17. 1.8145 km WSW of Adak, AlaskaSun, Aug 29, 3:41 AM HADT · 1852 days ago · 23 km deep · 33 km away
18. 2.5141 km WSW of Adak, AlaskaSun, Aug 29, 8:29 PM HADT · 1851 days ago · 30 km deep · 14 km away
19. 1.9111 km WSW of Adak, AlaskaSun, Aug 29, 8:57 PM HADT · 1851 days ago · 13 km deep · 27 km away
20. 1.9192 km W of Adak, AlaskaMon, Aug 30, 12:21 PM HADT · 1851 days ago · 148 km deep · 95 km away
21. 1.7215 km WSW of Adak, AlaskaTue, Aug 31, 9:40 AM HADT · 1850 days ago · 14 km deep · 81 km away
22. 1.6194 km WSW of Adak, AlaskaWed, Sep 1, 11:00 PM HADT · 1848 days ago · 5 km deep · 63 km away
23. 2.6221 km WSW of Adak, AlaskaThu, Sep 2, 3:19 AM HADT · 1848 days ago · 88 km deep · 85 km away
24. 1.6232 km WSW of Adak, AlaskaFri, Sep 3, 1:30 AM HADT · 1847 days ago · 11 km deep · 98 km away
25. 1.5Andreanof Islands, Aleutian Islands, AlaskaFri, Sep 3, 3:43 AM HADT · 1847 days ago · 42 km deep · 26 km away
26. 1.9232 km WSW of Adak, AlaskaFri, Sep 3, 6:10 AM HADT · 1847 days ago · 7 km deep · 98 km away
27. 1.6234 km WSW of Adak, AlaskaFri, Sep 3, 6:11 AM HADT · 1847 days ago · 13 km deep · 100 km away
28. 1.5124 km WSW of Adak, AlaskaFri, Sep 3, 6:19 AM HADT · 1847 days ago · 7 km deep · 15 km away
29. 1.8231 km WSW of Adak, AlaskaFri, Sep 3, 8:43 AM HADT · 1847 days ago · 13 km deep · 97 km away
30. 3.0123 km WSW of Adak, AlaskaSat, Sep 4, 3:07 PM HADT · 1846 days ago · 33 km deep · 20 km away
31. 1.8124 km WSW of Adak, AlaskaSat, Sep 4, 6:04 PM HADT · 1846 days ago · 70 km deep · 17 km away
32. 1.9134 km W of Adak, AlaskaSat, Sep 4, 10:19 PM HADT · 1845 days ago · 113 km deep · 46 km away
33. 1.7189 km WSW of Adak, AlaskaSun, Sep 5, 12:44 AM HADT · 1845 days ago · 3 km deep · 59 km away
34. 1.6124 km W of Adak, AlaskaSun, Sep 5, 1:14 AM HADT · 1845 days ago · 11 km deep · 37 km away
35. 1.766 km SW of Adak, AlaskaSun, Sep 5, 5:37 PM HADT · 1845 days ago · 74 km deep · 76 km away
36. 2.8199 km WSW of Adak, AlaskaMon, Sep 6, 6:00 AM HADT · 1844 days ago · 16 km deep · 70 km away
37. 1.5225 km W of Adak, AlaskaTue, Sep 7, 5:19 AM HADT · 1843 days ago · 73 km deep · 94 km away
38. 1.6124 km SW of Adak, AlaskaTue, Sep 7, 6:53 AM HADT · 1843 days ago · 26 km deep · 51 km away
39. 2.9177 km WSW of Adak, AlaskaTue, Sep 7, 6:21 PM HADT · 1843 days ago · 30 km deep · 48 km away
40. 1.5185 km W of Adak, AlaskaTue, Sep 7, 8:33 PM HADT · 1842 days ago · 15 km deep · 66 km away
41. 1.8114 km WSW of Adak, AlaskaTue, Sep 7, 9:55 PM HADT · 1842 days ago · 15 km deep · 24 km away
42. 1.649 km SW of Adak, AlaskaTue, Sep 7, 11:09 PM HADT · 1842 days ago · 44 km deep · 99 km away
43. 1.6168 km WSW of Adak, AlaskaTue, Sep 7, 11:43 PM HADT · 1842 days ago · 26 km deep · 42 km away
44. 1.5155 km W of Adak, AlaskaWed, Sep 8, 6:01 AM HADT · 1842 days ago · 2 km deep · 41 km away
45. 2.9126 km SW of Adak, AlaskaThu, Sep 9, 2:23 PM HADT · 1841 days ago · 35 km deep · 51 km away
46. 2.1147 km SW of Adak, AlaskaThu, Sep 9, 2:43 PM HADT · 1841 days ago · 26 km deep · 58 km away
47. 1.5Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 9, 8:27 PM HADT · 1840 days ago · 59 km deep · 72 km away
48. 1.7169 km W of Adak, AlaskaFri, Sep 10, 10:30 PM HADT · 1839 days ago · 12 km deep · 47 km away
49. 1.5153 km WSW of Adak, AlaskaSat, Sep 11, 6:04 AM HADT · 1839 days ago · 14 km deep · 17 km away
50. 1.6146 km W of Adak, AlaskaSun, Sep 12, 6:49 AM HADT · 1838 days ago · 16 km deep · 34 km away
51. 2.7133 km W of Adak, AlaskaSun, Sep 12, 11:47 AM HADT · 1838 days ago · 141 km deep · 47 km away
52. 1.782 km W of Adak, AlaskaMon, Sep 13, 3:35 AM HADT · 1837 days ago · 12 km deep · 61 km away
53. 1.8184 km WSW of Adak, AlaskaMon, Sep 13, 5:14 AM HADT · 1837 days ago · 22 km deep · 51 km away
54. 3.692 km SW of Adak, AlaskaMon, Sep 13, 6:44 AM HADT · 1837 days ago · 35 km deep · 60 km away
55. 1.6194 km WSW of Adak, AlaskaMon, Sep 13, 9:09 AM HADT · 1837 days ago · 20 km deep · 56 km away
56. 1.553 km SW of Adak, AlaskaMon, Sep 13, 9:31 AM HADT · 1837 days ago · 46 km deep · 94 km away
57. 2.8223 km W of Adak, AlaskaMon, Sep 13, 1:06 PM HADT · 1837 days ago · 78 km deep · 90 km away
58. 1.565 km SW of Adak, AlaskaWed, Sep 15, 5:52 PM HADT · 1835 days ago · 23 km deep · 84 km away
59. 2.0133 km W of Adak, AlaskaWed, Sep 15, 7:55 PM HADT · 1834 days ago · 15 km deep · 23 km away
60. 2.1136 km W of Adak, AKWed, Sep 15, 7:55 PM HADT · 1834 days ago · 17 km deep · 23 km away

The first 60 of 151.

Before

1. 3.4142 km WSW of Adak, AlaskaWed, Aug 25, 2:08 PM HADT · 1856 days ago · 17 km deep · 14 km away
2. 2.5Andreanof Islands, Aleutian Islands, AlaskaTue, Aug 24, 6:05 PM HADT · 1857 days ago · 35 km deep · 70 km away
3. 1.9201 km WSW of Adak, AlaskaTue, Aug 24, 12:02 PM HADT · 1857 days ago · 70 km deep · 66 km away
4. 3.6134 km WSW of Adak, AlaskaTue, Aug 24, 9:33 AM HADT · 1857 days ago · 41 km deep · 27 km away
5. 1.9135 km WSW of Adak, AlaskaTue, Aug 24, 3:05 AM HADT · 1857 days ago · 35 km deep · 28 km away
6. 1.9194 km WSW of Adak, AlaskaMon, Aug 23, 6:57 PM HADT · 1858 days ago · 13 km deep · 61 km away
7. 1.5121 km SW of Adak, AlaskaMon, Aug 23, 5:48 PM HADT · 1858 days ago · 25 km deep · 51 km away
8. 1.8106 km WSW of Adak, AlaskaMon, Aug 23, 2:28 PM HADT · 1858 days ago · 26 km deep · 44 km away
9. 1.7132 km WSW of Adak, AlaskaMon, Aug 23, 10:57 AM HADT · 1858 days ago · 27 km deep · 28 km away
10. 2.055 km WSW of Adak, AlaskaMon, Aug 23, 2:13 AM HADT · 1858 days ago · 75 km deep · 82 km away
11. 1.550 km W of Adak, AlaskaSun, Aug 22, 9:16 PM HADT · 1858 days ago · 126 km deep · 96 km away
12. 1.9203 km W of Adak, AlaskaSun, Aug 22, 3:39 PM HADT · 1859 days ago · 119 km deep · 86 km away
13. 1.5133 km WSW of Adak, AlaskaSun, Aug 22, 8:39 AM HADT · 1859 days ago · 7 km deep · 13 km away
14. 1.5133 km WSW of Adak, AlaskaSun, Aug 22, 6:17 AM HADT · 1859 days ago · 26 km deep · 29 km away
15. 2.5135 km WSW of Adak, AlaskaSun, Aug 22, 4:32 AM HADT · 1859 days ago · 35 km deep · 31 km away
16. 1.5132 km WSW of Adak, AlaskaSun, Aug 22, 3:05 AM HADT · 1859 days ago · 25 km deep · 28 km away
17. 1.8133 km WSW of Adak, AlaskaSun, Aug 22, 2:53 AM HADT · 1859 days ago · 25 km deep · 29 km away
18. 3.4133 km WSW of Adak, AlaskaSun, Aug 22, 2:50 AM HADT · 1859 days ago · 35 km deep · 28 km away
19. 2.8132 km WSW of Adak, AlaskaSun, Aug 22, 2:47 AM HADT · 1859 days ago · 35 km deep · 23 km away
20. 4.0131 km WSW of Adak, AlaskaSun, Aug 22, 2:46 AM HADT · 1859 days ago · 35 km deep · 26 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021axm99xa. Read Thu, Sep 24, 2026, 3:49 PM UTC.