M2.5 earthquake 43 km NW of Atka, Alaska

Magnitude

2.5 (ml), micro

Local time

Fri, Sep 17, 2021, 10:43 AM HADT

UTC

2021-09-17 19:43:05 UTC

Depth

216.1 km (134.3 mi), intermediate-depth

Epicenter

52.456° N, 174.671° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

23

After

1. 1.883 km E of Adak, AlaskaMon, Sep 20, 12:58 AM HADT · 1830 days ago · 64 km deep · 87 km away
2. 2.332 km ESE of Atka, AlaskaMon, Sep 20, 8:44 AM HADT · 1830 days ago · 126 km deep · 74 km away
3. 2.970 km NE of Adak, AlaskaMon, Sep 20, 9:54 AM HADT · 1829 days ago · 228 km deep · 93 km away
4. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 20, 1:17 PM HADT · 1829 days ago · 36 km deep · 96 km away
5. 2.182 km ENE of Adak, AlaskaMon, Sep 20, 11:08 PM HADT · 1829 days ago · 90 km deep · 67 km away
6. 1.664 km SSW of Atka, AlaskaThu, Sep 23, 6:54 AM HADT · 1827 days ago · 21 km deep · 90 km away
7. 1.8Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 23, 1:31 PM HADT · 1826 days ago · 56 km deep · 75 km away
8. 2.951 km SSW of Atka, AlaskaSat, Sep 25, 5:26 PM HADT · 1824 days ago · 35 km deep · 78 km away
9. 2.632 km ESE of Atka, AlaskaSun, Sep 26, 4:38 AM HADT · 1824 days ago · 80 km deep · 74 km away
10. 1.657 km ENE of Adak, AlaskaFri, Oct 1, 3:16 PM HADT · 1818 days ago · 86 km deep · 93 km away
11. 1.975 km E of Adak, AlaskaTue, Oct 5, 3:27 AM HADT · 1815 days ago · 29 km deep · 93 km away
12. 3.633 km SSW of Atka, AlaskaWed, Oct 6, 10:09 AM HADT · 1813 days ago · 75 km deep · 67 km away
13. 1.966 km E of Adak, AlaskaFri, Oct 8, 4:51 PM HADT · 1811 days ago · 62 km deep · 95 km away
14. 3.050 km SSE of Atka, AlaskaSat, Oct 9, 1:45 PM HADT · 1810 days ago · 35 km deep · 91 km away
15. 3.884 km NE of Adak, AlaskaSat, Oct 9, 2:07 PM HADT · 1810 days ago · 182 km deep · 74 km away
16. 3.863 km WSW of Atka, AlaskaSun, Oct 10, 1:59 AM HADT · 1810 days ago · 81 km deep · 65 km away
17. 3.127 km SW of Atka, AlaskaSun, Oct 10, 10:21 AM HADT · 1809 days ago · 35 km deep · 52 km away
18. 2.165 km E of Adak, AlaskaSun, Oct 10, 11:04 AM HADT · 1809 days ago · 29 km deep · 100 km away
19. 3.134 km WSW of Atka, AlaskaThu, Oct 14, 2:52 AM HADT · 1806 days ago · 138 km deep · 47 km away
20. 1.959 km WNW of Atka, AlaskaFri, Oct 15, 5:05 AM HADT · 1805 days ago · 108 km deep · 21 km away
21. 1.822 km SW of Atka, AlaskaFri, Oct 15, 6:50 AM HADT · 1805 days ago · 72 km deep · 44 km away
22. 2.885 km ESE of Adak, AlaskaFri, Oct 15, 11:13 AM HADT · 1804 days ago · 52 km deep · 99 km away
23. 3.693 km ESE of Adak, AlaskaWed, Oct 20, 8:49 AM HADT · 1800 days ago · 24 km deep · 98 km away
24. 2.469 km WNW of Atka, AlaskaFri, Oct 22, 7:00 PM HADT · 1797 days ago · 120 km deep · 35 km away
25. 2.081 km ENE of Adak, AlaskaSat, Oct 23, 5:38 PM HADT · 1796 days ago · 115 km deep · 72 km away
26. 2.929 km SSW of Atka, AlaskaMon, Oct 25, 7:25 PM HADT · 1794 days ago · 10 km deep · 62 km away
27. 1.833 km SSW of Atka, AlaskaTue, Oct 26, 12:08 AM HADT · 1794 days ago · 71 km deep · 62 km away
28. 2.974 km W of Atka, AlaskaTue, Oct 26, 3:37 PM HADT · 1793 days ago · 252 km deep · 57 km away
29. 3.079 km NE of Atka, AlaskaWed, Oct 27, 4:53 PM HADT · 1792 days ago · 236 km deep · 87 km away
30. 2.062 km E of Adak, AlaskaThu, Oct 28, 1:08 PM HADT · 1791 days ago · 74 km deep · 92 km away
31. 2.678 km E of Adak, AlaskaFri, Oct 29, 9:40 AM HADT · 1790 days ago · 75 km deep · 86 km away
32. 2.345 km S of Atka, AlaskaSun, Oct 31, 12:36 AM HADT · 1789 days ago · 223 km deep · 79 km away
33. 1.627 km SW of Atka, AlaskaSun, Oct 31, 3:22 AM HADT · 1789 days ago · 67 km deep · 52 km away
34. 1.627 km SW of Atka, AlaskaSun, Oct 31, 3:22 AM HADT · 1789 days ago · 67 km deep · 52 km away
35. 2.675 km SSW of Atka, AlaskaWed, Nov 3, 8:06 PM HADT · 1785 days ago · 35 km deep · 93 km away
36. 1.872 km SW of Atka, AlaskaFri, Nov 5, 4:24 AM HADT · 1784 days ago · 17 km deep · 87 km away
37. 2.061 km SW of Atka, AlaskaMon, Nov 8, 5:49 AM HAST · 1781 days ago · 63 km deep · 73 km away
38. 2.451 km NE of Adak, AlaskaMon, Nov 8, 2:18 PM HAST · 1780 days ago · 172 km deep · 99 km away
39. 2.059 km SSW of Atka, AlaskaThu, Nov 11, 11:39 AM HAST · 1777 days ago · 17 km deep · 84 km away
40. 1.757 km WSW of Atka, AlaskaFri, Nov 12, 5:19 PM HAST · 1776 days ago · 75 km deep · 51 km away
41. 2.276 km NE of Adak, AlaskaFri, Nov 12, 7:22 PM HAST · 1776 days ago · 214 km deep · 75 km away
42. 2.034 km WSW of Atka, AlaskaFri, Nov 12, 8:19 PM HAST · 1776 days ago · 88 km deep · 41 km away
43. 2.142 km ESE of Atka, AlaskaSat, Nov 13, 2:46 PM HAST · 1775 days ago · 15 km deep · 83 km away
44. 4.058 km NNW of Atka, AlaskaSun, Nov 14, 11:47 AM HAST · 1774 days ago · 211 km deep · 33 km away
45. 1.771 km SW of Atka, AlaskaSun, Nov 14, 9:44 PM HAST · 1774 days ago · 35 km deep · 83 km away
46. 1.773 km WSW of Atka, AlaskaMon, Nov 15, 10:08 PM HAST · 1773 days ago · 74 km deep · 64 km away
47. 2.949 km SW of Atka, AlaskaTue, Nov 16, 2:38 AM HAST · 1773 days ago · 72 km deep · 68 km away
48. 1.951 km ESE of Atka, AlaskaTue, Nov 16, 4:26 AM HAST · 1773 days ago · 63 km deep · 92 km away

Before

1. 1.947 km SSW of Atka, AlaskaFri, Sep 17, 2:54 AM HADT · 1833 days ago · 53 km deep · 78 km away
2. 1.950 km SSW of Atka, AlaskaFri, Sep 10, 2:59 PM HADT · 1839 days ago · 61 km deep · 80 km away
3. 3.131 km S of Atka, AlaskaFri, Sep 10, 9:35 AM HADT · 1839 days ago · 4 km deep · 65 km away
4. 3.147 km S of Atka, AlaskaFri, Sep 10, 8:42 AM HADT · 1840 days ago · 27 km deep · 81 km away
5. 1.972 km SSW of Atka, AlaskaWed, Sep 8, 7:43 PM HADT · 1841 days ago · 22 km deep · 93 km away
6. 2.278 km ENE of Adak, AlaskaWed, Sep 8, 2:59 AM HADT · 1842 days ago · 236 km deep · 71 km away
7. 1.554 km ENE of Atka, AlaskaTue, Sep 7, 7:29 PM HADT · 1842 days ago · 4 km deep · 78 km away
8. 1.935 km NE of Atka, AlaskaTue, Sep 7, 3:14 PM HADT · 1842 days ago · 145 km deep · 58 km away
9. 2.114 km NW of Atka, AlaskaTue, Sep 7, 10:16 AM HADT · 1842 days ago · 155 km deep · 29 km away
10. 1.960 km ENE of Adak, AlaskaMon, Sep 6, 5:02 PM HADT · 1843 days ago · 150 km deep · 88 km away
11. 1.774 km ENE of Adak, AlaskaMon, Sep 6, 4:41 PM HADT · 1843 days ago · 137 km deep · 76 km away
12. 1.561 km W of Atka, AlaskaMon, Sep 6, 7:27 AM HADT · 1844 days ago · 13 km deep · 47 km away
13. 1.674 km ENE of Adak, AlaskaSun, Sep 5, 9:37 PM HADT · 1844 days ago · 149 km deep · 76 km away
14. 2.866 km S of Atka, AlaskaSun, Sep 5, 8:48 AM HADT · 1845 days ago · 35 km deep · 97 km away
15. 1.951 km ENE of Adak, AlaskaSun, Sep 5, 2:05 AM HADT · 1845 days ago · 163 km deep · 97 km away
16. 2.811 km NNE of Atka, AlaskaSat, Sep 4, 8:03 PM HADT · 1845 days ago · 10 km deep · 42 km away
17. 2.588 km ESE of Adak, AlaskaSat, Sep 4, 10:10 AM HADT · 1845 days ago · 58 km deep · 96 km away
18. 2.018 km W of Atka, AlaskaFri, Sep 3, 1:37 AM HADT · 1847 days ago · 170 km deep · 33 km away
19. 2.936 km ENE of Atka, AlaskaThu, Sep 2, 11:31 PM HADT · 1847 days ago · 179 km deep · 64 km away
20. 1.753 km SSE of Atka, AlaskaThu, Sep 2, 11:20 PM HADT · 1847 days ago · 35 km deep · 96 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021bybapdv. Read Thu, Sep 24, 2026, 5:48 AM UTC.