M2.1 earthquake 91 km S of Atka, Alaska

Magnitude

2.1 (ml), micro

Local time

Sat, Oct 2, 2021, 8:27 AM HADT

UTC

2021-10-02 17:27:27 UTC

Depth

4.3 km (2.7 mi), shallow

Epicenter

51.381° N, 174.412° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

22

After

1. 1.967 km SE of Adak, AlaskaSun, Oct 3, 9:57 AM HADT · 1820 days ago · 22 km deep · 100 km away
2. 1.975 km E of Adak, AlaskaTue, Oct 5, 3:27 AM HADT · 1818 days ago · 29 km deep · 92 km away
3. 2.881 km SSE of Atka, AlaskaWed, Oct 6, 4:37 AM HADT · 1817 days ago · 35 km deep · 54 km away
4. 3.633 km SSW of Atka, AlaskaWed, Oct 6, 10:09 AM HADT · 1817 days ago · 75 km deep · 58 km away
5. 3.050 km SSE of Atka, AlaskaSat, Oct 9, 1:45 PM HADT · 1814 days ago · 35 km deep · 56 km away
6. 3.863 km WSW of Atka, AlaskaSun, Oct 10, 1:59 AM HADT · 1813 days ago · 81 km deep · 71 km away
7. 2.995 km S of Atka, AlaskaSun, Oct 10, 6:13 AM HADT · 1813 days ago · 17 km deep · 7 km away
8. 3.127 km SW of Atka, AlaskaSun, Oct 10, 10:21 AM HADT · 1813 days ago · 35 km deep · 69 km away
9. 4.981 km S of Atka, AlaskaMon, Oct 11, 9:25 AM HADT · 1812 days ago · 35 km deep · 11 km away
10. 3.134 km WSW of Atka, AlaskaThu, Oct 14, 2:52 AM HADT · 1809 days ago · 138 km deep · 74 km away
11. 1.890 km ESE of Adak, AlaskaThu, Oct 14, 11:52 PM HADT · 1808 days ago · 54 km deep · 73 km away
12. 1.822 km SW of Atka, AlaskaFri, Oct 15, 6:50 AM HADT · 1808 days ago · 72 km deep · 78 km away
13. 2.885 km ESE of Adak, AlaskaFri, Oct 15, 11:13 AM HADT · 1808 days ago · 52 km deep · 78 km away
14. 3.693 km ESE of Adak, AlaskaWed, Oct 20, 8:49 AM HADT · 1803 days ago · 24 km deep · 70 km away
15. 1.889 km SW of Atka, AlaskaMon, Oct 25, 12:09 PM HADT · 1798 days ago · 26 km deep · 46 km away
16. 2.929 km SSW of Atka, AlaskaMon, Oct 25, 7:25 PM HADT · 1798 days ago · 10 km deep · 63 km away
17. 1.833 km SSW of Atka, AlaskaTue, Oct 26, 12:08 AM HADT · 1797 days ago · 71 km deep · 60 km away
18. 1.982 km ESE of Adak, AlaskaWed, Oct 27, 9:07 PM HADT · 1795 days ago · 48 km deep · 81 km away
19. 1.985 km ESE of Adak, AlaskaThu, Oct 28, 4:08 AM HADT · 1795 days ago · 44 km deep · 78 km away
20. 4.069 km SSE of Atka, AlaskaThu, Oct 28, 9:38 AM HADT · 1795 days ago · 53 km deep · 42 km away
21. 2.073 km SE of Adak, AlaskaThu, Oct 28, 2:20 PM HADT · 1795 days ago · 23 km deep · 97 km away
22. 1.881 km ESE of Adak, AlaskaThu, Oct 28, 10:29 PM HADT · 1794 days ago · 55 km deep · 82 km away
23. 2.678 km E of Adak, AlaskaFri, Oct 29, 9:40 AM HADT · 1794 days ago · 75 km deep · 92 km away
24. 2.1178 km S of Atka, AlaskaSat, Oct 30, 7:32 PM HADT · 1793 days ago · 23 km deep · 88 km away
25. 2.345 km S of Atka, AlaskaSun, Oct 31, 12:36 AM HADT · 1792 days ago · 223 km deep · 46 km away
26. 1.627 km SW of Atka, AlaskaSun, Oct 31, 3:22 AM HADT · 1792 days ago · 67 km deep · 69 km away
27. 1.627 km SW of Atka, AlaskaSun, Oct 31, 3:22 AM HADT · 1792 days ago · 67 km deep · 69 km away
28. 1.980 km SSW of Atka, AlaskaSun, Oct 31, 5:53 AM HADT · 1792 days ago · 29 km deep · 26 km away
29. 2.7108 km S of Atka, AlaskaSun, Oct 31, 5:56 AM HADT · 1792 days ago · 28 km deep · 16 km away
30. 2.790 km SSW of Atka, AlaskaSun, Oct 31, 6:04 AM HADT · 1792 days ago · 35 km deep · 16 km away
31. 4.097 km S of Atka, AlaskaTue, Nov 2, 9:14 AM HADT · 1790 days ago · 12 km deep · 21 km away
32. 3.983 km SSE of Atka, AlaskaTue, Nov 2, 11:41 PM HADT · 1789 days ago · 35 km deep · 37 km away
33. 2.483 km S of Atka, AlaskaWed, Nov 3, 1:11 AM HADT · 1789 days ago · 25 km deep · 9 km away
34. 2.4112 km SSE of Atka, AlaskaWed, Nov 3, 5:50 AM HADT · 1789 days ago · 37 km deep · 53 km away
35. 2.675 km SSW of Atka, AlaskaWed, Nov 3, 8:06 PM HADT · 1789 days ago · 35 km deep · 37 km away
36. 2.5103 km ESE of Adak, AlaskaThu, Nov 4, 12:31 PM HADT · 1788 days ago · 35 km deep · 60 km away
37. 1.872 km SW of Atka, AlaskaFri, Nov 5, 4:24 AM HADT · 1787 days ago · 17 km deep · 45 km away
38. 2.8111 km SSE of Atka, AlaskaSat, Nov 6, 12:01 AM HADT · 1786 days ago · 35 km deep · 66 km away
39. 3.4103 km SE of Atka, AlaskaSat, Nov 6, 7:38 PM HADT · 1786 days ago · 35 km deep · 92 km away
40. 2.061 km SW of Atka, AlaskaMon, Nov 8, 5:49 AM HAST · 1784 days ago · 63 km deep · 56 km away
41. 3.0102 km S of Atka, AlaskaMon, Nov 8, 5:04 PM HAST · 1784 days ago · 10 km deep · 18 km away
42. 1.575 km SE of Adak, AlaskaMon, Nov 8, 7:10 PM HAST · 1784 days ago · 23 km deep · 95 km away
43. 1.770 km SE of Adak, AlaskaWed, Nov 10, 3:38 PM HAST · 1782 days ago · 22 km deep · 97 km away
44. 2.059 km SSW of Atka, AlaskaThu, Nov 11, 11:39 AM HAST · 1781 days ago · 17 km deep · 37 km away
45. 2.2122 km S of Atka, AlaskaThu, Nov 11, 4:15 PM HAST · 1781 days ago · 30 km deep · 33 km away
46. 1.757 km WSW of Atka, AlaskaFri, Nov 12, 5:19 PM HAST · 1780 days ago · 75 km deep · 84 km away
47. 2.034 km WSW of Atka, AlaskaFri, Nov 12, 8:19 PM HAST · 1779 days ago · 88 km deep · 81 km away
48. 1.976 km ESE of Adak, AlaskaSat, Nov 13, 2:52 AM HAST · 1779 days ago · 57 km deep · 87 km away
49. 2.1164 km S of Atka, AlaskaSat, Nov 13, 3:20 AM HAST · 1779 days ago · 14 km deep · 79 km away
50. 2.142 km ESE of Atka, AlaskaSat, Nov 13, 2:46 PM HAST · 1779 days ago · 15 km deep · 95 km away
51. 1.771 km SW of Atka, AlaskaSun, Nov 14, 9:44 PM HAST · 1777 days ago · 35 km deep · 52 km away
52. 1.773 km WSW of Atka, AlaskaMon, Nov 15, 10:08 PM HAST · 1776 days ago · 74 km deep · 88 km away
53. 2.949 km SW of Atka, AlaskaTue, Nov 16, 2:38 AM HAST · 1776 days ago · 72 km deep · 54 km away
54. 1.951 km ESE of Atka, AlaskaTue, Nov 16, 4:26 AM HAST · 1776 days ago · 63 km deep · 100 km away
55. 1.657 km WSW of Atka, AlaskaTue, Nov 16, 8:58 PM HAST · 1775 days ago · 70 km deep · 74 km away
56. 2.087 km SW of Atka, AlaskaWed, Nov 17, 12:07 AM HAST · 1775 days ago · 15 km deep · 44 km away
57. 2.847 km S of Atka, AlaskaWed, Nov 17, 1:00 AM HAST · 1775 days ago · 68 km deep · 49 km away
58. 1.817 km SSW of Atka, AlaskaWed, Nov 17, 4:52 PM HAST · 1775 days ago · 76 km deep · 74 km away
59. 1.596 km ESE of Adak, AlaskaWed, Nov 17, 10:43 PM HAST · 1774 days ago · 22 km deep · 66 km away
60. 1.952 km SE of Atka, AlaskaThu, Nov 18, 1:56 AM HAST · 1774 days ago · 55 km deep · 65 km away

The first 60 of 74.

Before

1. 2.632 km ESE of Atka, AlaskaSun, Sep 26, 4:38 AM HADT · 1827 days ago · 80 km deep · 91 km away
2. 1.876 km ESE of Adak, AlaskaSat, Sep 25, 7:12 PM HADT · 1828 days ago · 20 km deep · 88 km away
3. 2.951 km SSW of Atka, AlaskaSat, Sep 25, 5:26 PM HADT · 1828 days ago · 35 km deep · 42 km away
4. 1.8Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 23, 1:31 PM HADT · 1830 days ago · 56 km deep · 56 km away
5. 1.664 km SSW of Atka, AlaskaThu, Sep 23, 6:54 AM HADT · 1830 days ago · 21 km deep · 31 km away
6. 3.464 km SSE of Atka, AlaskaTue, Sep 21, 2:03 AM HADT · 1832 days ago · 35 km deep · 45 km away
7. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 20, 1:17 PM HADT · 1833 days ago · 36 km deep · 53 km away
8. 2.777 km SE of Atka, AlaskaMon, Sep 20, 10:12 AM HADT · 1833 days ago · 35 km deep · 89 km away
9. 2.332 km ESE of Atka, AlaskaMon, Sep 20, 8:44 AM HADT · 1833 days ago · 126 km deep · 92 km away
10. 2.796 km SSE of Atka, AlaskaMon, Sep 20, 1:23 AM HADT · 1833 days ago · 35 km deep · 40 km away
11. 1.883 km E of Adak, AlaskaMon, Sep 20, 12:58 AM HADT · 1833 days ago · 64 km deep · 85 km away
12. 1.777 km SE of Adak, AlaskaSun, Sep 19, 9:09 PM HADT · 1833 days ago · 23 km deep · 91 km away
13. 2.7105 km SSE of Atka, AlaskaSun, Sep 19, 8:14 PM HADT · 1834 days ago · 35 km deep · 70 km away
14. 3.0135 km SSW of Atka, AlaskaFri, Sep 17, 8:34 AM HADT · 1836 days ago · 14 km deep · 49 km away
15. 1.947 km SSW of Atka, AlaskaFri, Sep 17, 2:54 AM HADT · 1836 days ago · 53 km deep · 44 km away
16. 2.687 km S of Atka, AlaskaFri, Sep 17, 1:22 AM HADT · 1836 days ago · 35 km deep · 17 km away
17. 3.1110 km SE of Atka, AlaskaMon, Sep 13, 3:54 AM HADT · 1840 days ago · 35 km deep · 90 km away
18. 1.950 km SSW of Atka, AlaskaFri, Sep 10, 2:59 PM HADT · 1843 days ago · 61 km deep · 42 km away
19. 3.131 km S of Atka, AlaskaFri, Sep 10, 9:35 AM HADT · 1843 days ago · 4 km deep · 61 km away
20. 3.147 km S of Atka, AlaskaFri, Sep 10, 8:42 AM HADT · 1843 days ago · 27 km deep · 44 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021cn32ns4. Read Sun, Sep 27, 2026, 5:27 PM UTC.