M1.5 earthquake 13 km N of Atka, Alaska

Magnitude

1.5 (ml), micro

Local time

Tue, Aug 10, 2021, 8:18 PM HADT

UTC

2021-08-11 05:18:27 UTC

Depth

5.4 km (3.3 mi), shallow

Epicenter

52.313° N, 174.210° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.25

Depth from

From location

Station coverage gap

214°, poorly surrounded by stations

Stations used

7

After

1. 2.114 km N of Atka, AlaskaWed, Aug 11, 12:50 AM HADT · 1870 days ago · 4 km deep · 2 km away
2. 2.315 km N of Atka, AlaskaWed, Aug 11, 12:56 AM HADT · 1870 days ago · 4 km deep · 3 km away
3. 1.613 km N of Atka, AlaskaWed, Aug 11, 8:32 AM HADT · 1869 days ago · 5 km deep · 1 km away
4. 2.015 km N of Atka, AlaskaWed, Aug 11, 10:31 AM HADT · 1869 days ago · 4 km deep · 3 km away
5. 2.890 km SE of Atka, AlaskaWed, Aug 11, 2:13 PM HADT · 1869 days ago · 35 km deep · 99 km away
6. 3.028 km WSW of Atka, AlaskaThu, Aug 12, 6:45 AM HADT · 1869 days ago · 71 km deep · 34 km away
7. 2.746 km S of Atka, AlaskaThu, Aug 12, 12:40 PM HADT · 1868 days ago · 35 km deep · 60 km away
8. 1.653 km SSW of Atka, AlaskaThu, Aug 12, 9:20 PM HADT · 1868 days ago · 15 km deep · 66 km away
9. 3.948 km E of Atka, AlaskaFri, Aug 13, 8:32 AM HADT · 1867 days ago · 105 km deep · 52 km away
10. 2.753 km E of Atka, AlaskaFri, Aug 13, 1:24 PM HADT · 1867 days ago · 10 km deep · 54 km away
11. 1.966 km E of Atka, AlaskaSat, Aug 14, 2:39 PM HADT · 1866 days ago · 129 km deep · 65 km away
12. 3.038 km SSE of Atka, AlaskaTue, Aug 17, 3:57 AM HADT · 1864 days ago · 67 km deep · 50 km away
13. 2.678 km ESE of Atka, AlaskaTue, Aug 17, 10:27 AM HADT · 1863 days ago · 44 km deep · 85 km away
14. 1.573 km WSW of Atka, AlaskaWed, Aug 18, 12:02 PM HADT · 1862 days ago · 64 km deep · 79 km away
15. 1.863 km W of Atka, AlaskaThu, Aug 19, 10:05 AM HADT · 1861 days ago · 170 km deep · 63 km away
16. 3.227 km E of Atka, AlaskaThu, Aug 19, 1:16 PM HADT · 1861 days ago · 19 km deep · 29 km away
17. 2.829 km NNE of Atka, AlaskaThu, Aug 19, 2:51 PM HADT · 1861 days ago · 217 km deep · 18 km away
18. 1.748 km E of Atka, AlaskaThu, Aug 19, 4:57 PM HADT · 1861 days ago · 16 km deep · 49 km away
19. 4.767 km ESE of Atka, AlaskaFri, Aug 20, 3:20 AM HADT · 1861 days ago · 79 km deep · 74 km away
20. 2.163 km ESE of Atka, AlaskaFri, Aug 20, 3:28 AM HADT · 1861 days ago · 74 km deep · 69 km away
21. 1.833 km E of Atka, AlaskaFri, Aug 20, 7:54 PM HADT · 1860 days ago · 13 km deep · 35 km away
22. 1.742 km SW of Atka, AlaskaSat, Aug 21, 3:05 AM HADT · 1860 days ago · 53 km deep · 53 km away
23. 2.853 km SSE of Atka, AlaskaSat, Aug 21, 4:18 AM HADT · 1860 days ago · 35 km deep · 66 km away
24. 1.967 km ESE of Atka, AlaskaSat, Aug 21, 6:34 AM HADT · 1860 days ago · 60 km deep · 75 km away
25. 2.059 km SSE of Atka, AlaskaSat, Aug 21, 8:00 AM HADT · 1859 days ago · 15 km deep · 72 km away
26. 3.349 km N of Atka, AlaskaSat, Aug 21, 12:45 PM HADT · 1859 days ago · 247 km deep · 37 km away
27. 3.2Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 21, 4:15 PM HADT · 1859 days ago · 35 km deep · 88 km away
28. 1.921 km SW of Atka, AlaskaSun, Aug 22, 12:28 AM HADT · 1859 days ago · 9 km deep · 31 km away
29. 2.318 km N of Atka, AlaskaSun, Aug 22, 4:59 AM HADT · 1859 days ago · 146 km deep · 6 km away
30. 1.934 km SSW of Atka, AlaskaSun, Aug 22, 10:38 PM HADT · 1858 days ago · 71 km deep · 46 km away
31. 1.739 km ESE of Atka, AlaskaMon, Aug 23, 6:40 AM HADT · 1858 days ago · 23 km deep · 47 km away
32. 1.529 km ESE of Atka, AlaskaMon, Aug 23, 3:36 PM HADT · 1857 days ago · 36 km deep · 36 km away
33. 1.74 km NNE of Atka, AlaskaMon, Aug 23, 3:50 PM HADT · 1857 days ago · 129 km deep · 9 km away
34. 2.8Andreanof Islands, Aleutian Islands, AlaskaWed, Aug 25, 12:10 AM HADT · 1856 days ago · 219 km deep · 36 km away
35. 1.542 km ESE of Atka, AlaskaWed, Aug 25, 3:39 PM HADT · 1855 days ago · 14 km deep · 50 km away
36. 1.773 km WSW of Atka, AlaskaThu, Aug 26, 10:45 AM HADT · 1854 days ago · 73 km deep · 78 km away
37. 2.983 km SE of Atka, AlaskaThu, Aug 26, 3:47 PM HADT · 1854 days ago · 35 km deep · 91 km away
38. 2.085 km SSE of Atka, AlaskaThu, Aug 26, 8:40 PM HADT · 1854 days ago · 4 km deep · 97 km away
39. 1.661 km SSE of Atka, AlaskaSat, Aug 28, 4:49 AM HADT · 1853 days ago · 25 km deep · 74 km away
40. 1.877 km ESE of Atka, AlaskaSat, Aug 28, 9:36 AM HADT · 1852 days ago · 34 km deep · 84 km away
41. 1.578 km W of Atka, AlaskaSat, Aug 28, 7:16 PM HADT · 1852 days ago · 110 km deep · 80 km away
42. 1.772 km WSW of Atka, AlaskaSun, Aug 29, 11:45 AM HADT · 1851 days ago · 122 km deep · 75 km away
43. 1.647 km ESE of Atka, AlaskaMon, Aug 30, 8:38 PM HADT · 1850 days ago · 11 km deep · 53 km away
44. 3.684 km E of Adak, AlaskaMon, Aug 30, 9:28 PM HADT · 1850 days ago · 64 km deep · 99 km away
45. 1.836 km NE of Atka, AlaskaTue, Aug 31, 6:11 AM HADT · 1850 days ago · 119 km deep · 28 km away
46. 1.753 km SSE of Atka, AlaskaThu, Sep 2, 11:20 PM HADT · 1847 days ago · 35 km deep · 66 km away
47. 2.936 km ENE of Atka, AlaskaThu, Sep 2, 11:31 PM HADT · 1847 days ago · 179 km deep · 32 km away
48. 2.018 km W of Atka, AlaskaFri, Sep 3, 1:37 AM HADT · 1847 days ago · 170 km deep · 23 km away
49. 2.811 km NNE of Atka, AlaskaSat, Sep 4, 8:03 PM HADT · 1845 days ago · 10 km deep · 7 km away
50. 2.866 km S of Atka, AlaskaSun, Sep 5, 8:48 AM HADT · 1844 days ago · 35 km deep · 79 km away
51. 1.674 km ENE of Adak, AlaskaSun, Sep 5, 9:37 PM HADT · 1844 days ago · 149 km deep · 98 km away
52. 1.561 km W of Atka, AlaskaMon, Sep 6, 7:27 AM HADT · 1844 days ago · 13 km deep · 64 km away
53. 1.774 km ENE of Adak, AlaskaMon, Sep 6, 4:41 PM HADT · 1843 days ago · 137 km deep · 98 km away
54. 2.114 km NW of Atka, AlaskaTue, Sep 7, 10:16 AM HADT · 1842 days ago · 155 km deep · 10 km away
55. 1.935 km NE of Atka, AlaskaTue, Sep 7, 3:14 PM HADT · 1842 days ago · 145 km deep · 29 km away
56. 1.554 km ENE of Atka, AlaskaTue, Sep 7, 7:29 PM HADT · 1842 days ago · 4 km deep · 49 km away
57. 2.278 km ENE of Adak, AlaskaWed, Sep 8, 2:59 AM HADT · 1842 days ago · 236 km deep · 94 km away
58. 1.972 km SSW of Atka, AlaskaWed, Sep 8, 7:43 PM HADT · 1841 days ago · 22 km deep · 84 km away
59. 3.689 km SW of Atka, AlaskaThu, Sep 9, 2:44 PM HADT · 1840 days ago · 35 km deep · 100 km away
60. 3.147 km S of Atka, AlaskaFri, Sep 10, 8:42 AM HADT · 1839 days ago · 27 km deep · 61 km away

The first 60 of 77.

Before

1. 2.014 km N of Atka, AlaskaTue, Aug 10, 6:11 PM HADT · 1870 days ago · 5 km deep · 2 km away
2. 2.114 km N of Atka, AlaskaTue, Aug 10, 5:27 PM HADT · 1870 days ago · 5 km deep · 2 km away
3. 1.815 km N of Atka, AlaskaTue, Aug 10, 4:52 PM HADT · 1870 days ago · 3 km deep · 3 km away
4. 1.813 km N of Atka, AlaskaTue, Aug 10, 4:33 PM HADT · 1870 days ago · 4 km deep · 1 km away
5. 2.068 km SE of Atka, AlaskaTue, Aug 10, 3:11 PM HADT · 1870 days ago · 23 km deep · 79 km away
6. 3.160 km SSW of Atka, AlaskaTue, Aug 10, 2:40 PM HADT · 1870 days ago · 224 km deep · 72 km away
7. 1.685 km SW of Atka, AlaskaTue, Aug 10, 1:23 PM HADT · 1870 days ago · 25 km deep · 95 km away
8. 2.122 km SSW of Atka, AlaskaMon, Aug 9, 10:37 PM HADT · 1871 days ago · 152 km deep · 34 km away
9. 1.930 km SSW of Atka, AlaskaSun, Aug 8, 12:47 PM HADT · 1872 days ago · 65 km deep · 42 km away
10. 1.867 km WSW of Atka, AlaskaSat, Aug 7, 10:40 AM HADT · 1873 days ago · 69 km deep · 74 km away
11. 2.766 km S of Atka, AlaskaFri, Aug 6, 11:17 AM HADT · 1874 days ago · 35 km deep · 80 km away
12. 1.727 km E of Atka, AlaskaWed, Aug 4, 10:47 AM HADT · 1876 days ago · 5 km deep · 31 km away
13. 3.150 km S of Atka, AlaskaWed, Aug 4, 7:32 AM HADT · 1877 days ago · 10 km deep · 63 km away
14. 2.782 km SE of Atka, AlaskaTue, Aug 3, 12:44 PM HADT · 1877 days ago · 21 km deep · 91 km away
15. 3.110 km NW of Atka, AlaskaTue, Aug 3, 5:56 AM HADT · 1878 days ago · 210 km deep · 10 km away
16. 1.911 km S of Atka, AlaskaSun, Aug 1, 10:53 PM HADT · 1879 days ago · 74 km deep · 24 km away
17. 2.741 km SSW of Atka, AlaskaSun, Aug 1, 5:11 PM HADT · 1879 days ago · 210 km deep · 53 km away
18. 1.912 km S of Atka, AlaskaSat, Jul 31, 3:14 PM HADT · 1880 days ago · 24 km deep · 25 km away
19. 1.685 km WSW of Atka, AlaskaFri, Jul 30, 5:25 AM HADT · 1882 days ago · 78 km deep · 89 km away
20. 3.074 km NW of Atka, AlaskaFri, Jul 30, 1:44 AM HADT · 1882 days ago · 206 km deep · 65 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91037918. Read Thu, Sep 24, 2026, 4:03 AM UTC.