M1.7 earthquake 4 km NNE of Atka, Alaska

Magnitude

1.7 (ml), micro

Local time

Mon, Aug 23, 2021, 3:50 PM HADT

UTC

2021-08-24 00:50:14 UTC

Depth

128.8 km (80.0 mi), intermediate-depth

Epicenter

52.233° N, 174.165° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

24

After

1. 2.8Andreanof Islands, Aleutian Islands, AlaskaWed, Aug 25, 12:10 AM HADT · 1856 days ago · 219 km deep · 39 km away
2. 1.542 km ESE of Atka, AlaskaWed, Aug 25, 3:39 PM HADT · 1855 days ago · 14 km deep · 42 km away
3. 1.773 km WSW of Atka, AlaskaThu, Aug 26, 10:45 AM HADT · 1854 days ago · 73 km deep · 77 km away
4. 2.983 km SE of Atka, AlaskaThu, Aug 26, 3:47 PM HADT · 1854 days ago · 35 km deep · 83 km away
5. 2.085 km SSE of Atka, AlaskaThu, Aug 26, 8:40 PM HADT · 1854 days ago · 4 km deep · 88 km away
6. 1.661 km SSE of Atka, AlaskaSat, Aug 28, 4:49 AM HADT · 1853 days ago · 25 km deep · 64 km away
7. 1.877 km ESE of Atka, AlaskaSat, Aug 28, 9:36 AM HADT · 1852 days ago · 34 km deep · 77 km away
8. 1.578 km W of Atka, AlaskaSat, Aug 28, 7:16 PM HADT · 1852 days ago · 110 km deep · 81 km away
9. 1.772 km WSW of Atka, AlaskaSun, Aug 29, 11:45 AM HADT · 1851 days ago · 122 km deep · 76 km away
10. 1.647 km ESE of Atka, AlaskaMon, Aug 30, 8:38 PM HADT · 1850 days ago · 11 km deep · 46 km away
11. 3.684 km E of Adak, AlaskaMon, Aug 30, 9:28 PM HADT · 1850 days ago · 64 km deep · 97 km away
12. 1.836 km NE of Atka, AlaskaTue, Aug 31, 6:11 AM HADT · 1850 days ago · 119 km deep · 32 km away
13. 1.753 km SSE of Atka, AlaskaThu, Sep 2, 11:20 PM HADT · 1847 days ago · 35 km deep · 56 km away
14. 2.936 km ENE of Atka, AlaskaThu, Sep 2, 11:31 PM HADT · 1847 days ago · 179 km deep · 32 km away
15. 2.018 km W of Atka, AlaskaFri, Sep 3, 1:37 AM HADT · 1847 days ago · 170 km deep · 22 km away
16. 2.811 km NNE of Atka, AlaskaSat, Sep 4, 8:03 PM HADT · 1845 days ago · 10 km deep · 7 km away
17. 2.866 km S of Atka, AlaskaSun, Sep 5, 8:48 AM HADT · 1844 days ago · 35 km deep · 71 km away
18. 1.674 km ENE of Adak, AlaskaSun, Sep 5, 9:37 PM HADT · 1844 days ago · 149 km deep · 99 km away
19. 1.561 km W of Atka, AlaskaMon, Sep 6, 7:27 AM HADT · 1844 days ago · 13 km deep · 65 km away
20. 1.774 km ENE of Adak, AlaskaMon, Sep 6, 4:41 PM HADT · 1843 days ago · 137 km deep · 99 km away
21. 2.114 km NW of Atka, AlaskaTue, Sep 7, 10:16 AM HADT · 1842 days ago · 155 km deep · 14 km away
22. 1.935 km NE of Atka, AlaskaTue, Sep 7, 3:14 PM HADT · 1842 days ago · 145 km deep · 31 km away
23. 2.893 km SSE of Atka, AlaskaTue, Sep 7, 5:09 PM HADT · 1842 days ago · 35 km deep · 97 km away
24. 1.554 km ENE of Atka, AlaskaTue, Sep 7, 7:29 PM HADT · 1842 days ago · 4 km deep · 50 km away
25. 2.278 km ENE of Adak, AlaskaWed, Sep 8, 2:59 AM HADT · 1842 days ago · 236 km deep · 96 km away
26. 1.972 km SSW of Atka, AlaskaWed, Sep 8, 7:43 PM HADT · 1841 days ago · 22 km deep · 77 km away
27. 3.689 km SW of Atka, AlaskaThu, Sep 9, 2:44 PM HADT · 1840 days ago · 35 km deep · 95 km away
28. 3.147 km S of Atka, AlaskaFri, Sep 10, 8:42 AM HADT · 1839 days ago · 27 km deep · 52 km away
29. 3.131 km S of Atka, AlaskaFri, Sep 10, 9:35 AM HADT · 1839 days ago · 4 km deep · 36 km away
30. 1.950 km SSW of Atka, AlaskaFri, Sep 10, 2:59 PM HADT · 1839 days ago · 61 km deep · 56 km away
31. 2.687 km S of Atka, AlaskaFri, Sep 17, 1:22 AM HADT · 1833 days ago · 35 km deep · 91 km away
32. 1.947 km SSW of Atka, AlaskaFri, Sep 17, 2:54 AM HADT · 1833 days ago · 53 km deep · 52 km away
33. 2.543 km NW of Atka, AlaskaFri, Sep 17, 10:43 AM HADT · 1832 days ago · 216 km deep · 42 km away
34. 1.883 km E of Adak, AlaskaMon, Sep 20, 12:58 AM HADT · 1830 days ago · 64 km deep · 97 km away
35. 2.796 km SSE of Atka, AlaskaMon, Sep 20, 1:23 AM HADT · 1830 days ago · 35 km deep · 99 km away
36. 2.332 km ESE of Atka, AlaskaMon, Sep 20, 8:44 AM HADT · 1829 days ago · 126 km deep · 32 km away
37. 2.777 km SE of Atka, AlaskaMon, Sep 20, 10:12 AM HADT · 1829 days ago · 35 km deep · 78 km away
38. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 20, 1:17 PM HADT · 1829 days ago · 36 km deep · 92 km away
39. 2.182 km ENE of Adak, AlaskaMon, Sep 20, 11:08 PM HADT · 1829 days ago · 90 km deep · 92 km away
40. 3.464 km SSE of Atka, AlaskaTue, Sep 21, 2:03 AM HADT · 1829 days ago · 35 km deep · 68 km away
41. 1.664 km SSW of Atka, AlaskaThu, Sep 23, 6:54 AM HADT · 1827 days ago · 21 km deep · 69 km away
42. 1.8Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 23, 1:31 PM HADT · 1826 days ago · 56 km deep · 41 km away
43. 2.951 km SSW of Atka, AlaskaSat, Sep 25, 5:26 PM HADT · 1824 days ago · 35 km deep · 57 km away
44. 2.632 km ESE of Atka, AlaskaSun, Sep 26, 4:38 AM HADT · 1824 days ago · 80 km deep · 32 km away
45. 2.191 km S of Atka, AlaskaSat, Oct 2, 8:27 AM HADT · 1817 days ago · 4 km deep · 96 km away
46. 1.993 km ESE of Atka, AlaskaSat, Oct 2, 9:11 PM HADT · 1817 days ago · 58 km deep · 94 km away
47. 2.881 km SSE of Atka, AlaskaWed, Oct 6, 4:37 AM HADT · 1814 days ago · 35 km deep · 84 km away
48. 3.633 km SSW of Atka, AlaskaWed, Oct 6, 10:09 AM HADT · 1813 days ago · 75 km deep · 38 km away
49. 3.050 km SSE of Atka, AlaskaSat, Oct 9, 1:45 PM HADT · 1810 days ago · 35 km deep · 53 km away
50. 3.863 km WSW of Atka, AlaskaSun, Oct 10, 1:59 AM HADT · 1810 days ago · 81 km deep · 67 km away
51. 2.995 km S of Atka, AlaskaSun, Oct 10, 6:13 AM HADT · 1810 days ago · 17 km deep · 100 km away
52. 3.127 km SW of Atka, AlaskaSun, Oct 10, 10:21 AM HADT · 1809 days ago · 35 km deep · 32 km away
53. 4.981 km S of Atka, AlaskaMon, Oct 11, 9:25 AM HADT · 1808 days ago · 35 km deep · 86 km away
54. 3.134 km WSW of Atka, AlaskaThu, Oct 14, 2:52 AM HADT · 1806 days ago · 138 km deep · 39 km away
55. 1.959 km WNW of Atka, AlaskaFri, Oct 15, 5:05 AM HADT · 1805 days ago · 108 km deep · 60 km away
56. 1.822 km SW of Atka, AlaskaFri, Oct 15, 6:50 AM HADT · 1805 days ago · 72 km deep · 27 km away

Before

1. 1.529 km ESE of Atka, AlaskaMon, Aug 23, 3:36 PM HADT · 1857 days ago · 36 km deep · 28 km away
2. 1.690 km SSE of Atka, AlaskaMon, Aug 23, 3:23 PM HADT · 1857 days ago · 41 km deep · 94 km away
3. 1.739 km ESE of Atka, AlaskaMon, Aug 23, 6:40 AM HADT · 1858 days ago · 23 km deep · 39 km away
4. 1.934 km SSW of Atka, AlaskaSun, Aug 22, 10:38 PM HADT · 1858 days ago · 71 km deep · 39 km away
5. 2.318 km N of Atka, AlaskaSun, Aug 22, 4:59 AM HADT · 1859 days ago · 146 km deep · 15 km away
6. 1.921 km SW of Atka, AlaskaSun, Aug 22, 12:28 AM HADT · 1859 days ago · 9 km deep · 26 km away
7. 3.2Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 21, 4:15 PM HADT · 1859 days ago · 35 km deep · 81 km away
8. 3.349 km N of Atka, AlaskaSat, Aug 21, 12:45 PM HADT · 1859 days ago · 247 km deep · 46 km away
9. 2.059 km SSE of Atka, AlaskaSat, Aug 21, 8:00 AM HADT · 1860 days ago · 15 km deep · 62 km away
10. 1.967 km ESE of Atka, AlaskaSat, Aug 21, 6:34 AM HADT · 1860 days ago · 60 km deep · 67 km away
11. 2.853 km SSE of Atka, AlaskaSat, Aug 21, 4:18 AM HADT · 1860 days ago · 35 km deep · 57 km away
12. 1.742 km SW of Atka, AlaskaSat, Aug 21, 3:05 AM HADT · 1860 days ago · 53 km deep · 47 km away
13. 1.833 km E of Atka, AlaskaFri, Aug 20, 7:54 PM HADT · 1860 days ago · 13 km deep · 30 km away
14. 2.163 km ESE of Atka, AlaskaFri, Aug 20, 3:28 AM HADT · 1861 days ago · 74 km deep · 62 km away
15. 4.767 km ESE of Atka, AlaskaFri, Aug 20, 3:20 AM HADT · 1861 days ago · 79 km deep · 67 km away
16. 1.748 km E of Atka, AlaskaThu, Aug 19, 4:57 PM HADT · 1861 days ago · 16 km deep · 45 km away
17. 2.829 km NNE of Atka, AlaskaThu, Aug 19, 2:51 PM HADT · 1861 days ago · 217 km deep · 25 km away
18. 3.227 km E of Atka, AlaskaThu, Aug 19, 1:16 PM HADT · 1861 days ago · 19 km deep · 25 km away
19. 1.863 km W of Atka, AlaskaThu, Aug 19, 10:05 AM HADT · 1861 days ago · 170 km deep · 66 km away
20. 1.573 km WSW of Atka, AlaskaWed, Aug 18, 12:02 PM HADT · 1862 days ago · 64 km deep · 77 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021aub4nfj. Read Thu, Sep 24, 2026, 4:36 AM UTC.