M1.5 earthquake 57 km ESE of Adak, Alaska

Magnitude

1.5 (ml), micro

Local time

Mon, Sep 20, 2021, 12:46 AM HADT

UTC

2021-09-20 09:46:45 UTC

Depth

43.9 km (27.3 mi), shallow

Epicenter

51.660° N, 175.876° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

26

After

1. 1.883 km E of Adak, AlaskaMon, Sep 20, 12:58 AM HADT · 1832 days ago · 64 km deep · 36 km away
2. 1.561 km ESE of Adak, AlaskaMon, Sep 20, 7:14 AM HADT · 1832 days ago · 44 km deep · 7 km away
3. 2.970 km NE of Adak, AlaskaMon, Sep 20, 9:54 AM HADT · 1832 days ago · 228 km deep · 82 km away
4. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 20, 1:17 PM HADT · 1832 days ago · 36 km deep · 56 km away
5. 2.182 km ENE of Adak, AlaskaMon, Sep 20, 11:08 PM HADT · 1831 days ago · 90 km deep · 59 km away
6. 2.753 km SE of Adak, AlaskaWed, Sep 22, 8:40 PM HADT · 1830 days ago · 35 km deep · 27 km away
7. 1.559 km SE of Adak, AlaskaWed, Sep 22, 10:44 PM HADT · 1829 days ago · 26 km deep · 19 km away
8. 1.762 km SE of Adak, AlaskaThu, Sep 23, 1:35 AM HADT · 1829 days ago · 43 km deep · 18 km away
9. 1.664 km SSW of Atka, AlaskaThu, Sep 23, 6:54 AM HADT · 1829 days ago · 21 km deep · 93 km away
10. 1.579 km S of Adak, AlaskaThu, Sep 23, 7:08 AM HADT · 1829 days ago · 26 km deep · 67 km away
11. 1.945 km NE of Adak, AlaskaThu, Sep 23, 12:25 PM HADT · 1829 days ago · 135 km deep · 60 km away
12. 2.032 km E of Adak, AlaskaFri, Sep 24, 3:37 AM HADT · 1828 days ago · 75 km deep · 30 km away
13. 1.619 km SSW of Adak, AlaskaFri, Sep 24, 8:25 AM HADT · 1828 days ago · 75 km deep · 61 km away
14. 1.543 km S of Adak, AlaskaFri, Sep 24, 1:58 PM HADT · 1828 days ago · 43 km deep · 57 km away
15. 2.951 km SSW of Atka, AlaskaSat, Sep 25, 5:26 PM HADT · 1827 days ago · 35 km deep · 98 km away
16. 1.876 km ESE of Adak, AlaskaSat, Sep 25, 7:12 PM HADT · 1827 days ago · 20 km deep · 19 km away
17. 2.861 km SE of Adak, AlaskaSun, Sep 26, 10:39 PM HADT · 1825 days ago · 35 km deep · 31 km away
18. 1.653 km SE of Adak, AlaskaMon, Sep 27, 2:21 PM HADT · 1825 days ago · 32 km deep · 17 km away
19. 1.663 km SSW of Adak, AlaskaTue, Sep 28, 12:25 AM HADT · 1824 days ago · 20 km deep · 88 km away
20. 1.861 km SE of Adak, AlaskaTue, Sep 28, 3:03 PM HADT · 1824 days ago · 23 km deep · 21 km away
21. 3.837 km ENE of Adak, AlaskaThu, Sep 30, 4:32 PM HADT · 1822 days ago · 128 km deep · 39 km away
22. 2.623 km SSE of Adak, AlaskaFri, Oct 1, 6:13 AM HADT · 1821 days ago · 69 km deep · 42 km away
23. 4.749 km NE of Adak, AlaskaFri, Oct 1, 12:21 PM HADT · 1821 days ago · 129 km deep · 64 km away
24. 1.657 km ENE of Adak, AlaskaFri, Oct 1, 3:16 PM HADT · 1821 days ago · 86 km deep · 38 km away
25. 1.763 km SE of Adak, AlaskaFri, Oct 1, 8:15 PM HADT · 1821 days ago · 27 km deep · 20 km away
26. 1.926 km S of Adak, AlaskaSat, Oct 2, 2:49 PM HADT · 1820 days ago · 63 km deep · 48 km away
27. 1.967 km SE of Adak, AlaskaSun, Oct 3, 9:57 AM HADT · 1819 days ago · 22 km deep · 15 km away
28. 1.539 km SSE of Adak, AlaskaSun, Oct 3, 11:36 AM HADT · 1819 days ago · 26 km deep · 37 km away
29. 1.841 km NE of Adak, AlaskaMon, Oct 4, 12:39 PM HADT · 1818 days ago · 3 km deep · 51 km away
30. 1.975 km E of Adak, AlaskaTue, Oct 5, 3:27 AM HADT · 1817 days ago · 29 km deep · 29 km away
31. 1.9Andreanof Islands, Aleutian Islands, AlaskaWed, Oct 6, 8:43 PM HADT · 1816 days ago · 24 km deep · 89 km away
32. 3.340 km SE of Adak, AlaskaFri, Oct 8, 8:19 AM HADT · 1814 days ago · 35 km deep · 25 km away
33. 1.966 km E of Adak, AlaskaFri, Oct 8, 4:51 PM HADT · 1814 days ago · 62 km deep · 27 km away
34. 1.745 km W of Adak, AlaskaSat, Oct 9, 2:34 AM HADT · 1813 days ago · 92 km deep · 98 km away
35. 3.884 km NE of Adak, AlaskaSat, Oct 9, 2:07 PM HADT · 1813 days ago · 182 km deep · 83 km away
36. 3.863 km WSW of Atka, AlaskaSun, Oct 10, 1:59 AM HADT · 1812 days ago · 81 km deep · 67 km away
37. 1.9Andreanof Islands, Aleutian Islands, AlaskaSun, Oct 10, 2:41 AM HADT · 1812 days ago · 23 km deep · 30 km away
38. 2.165 km E of Adak, AlaskaSun, Oct 10, 11:04 AM HADT · 1812 days ago · 29 km deep · 21 km away
39. 2.961 km SSW of Adak, AlaskaMon, Oct 11, 12:26 AM HADT · 1811 days ago · 51 km deep · 78 km away
40. 3.746 km S of Adak, AlaskaTue, Oct 12, 8:23 AM HADT · 1810 days ago · 35 km deep · 58 km away
41. 2.855 km S of Adak, AlaskaTue, Oct 12, 10:43 PM HADT · 1809 days ago · 32 km deep · 68 km away
42. 3.144 km SSE of Adak, AlaskaThu, Oct 14, 1:39 AM HADT · 1808 days ago · 33 km deep · 31 km away
43. 3.134 km WSW of Atka, AlaskaThu, Oct 14, 2:52 AM HADT · 1808 days ago · 138 km deep · 95 km away
44. 1.646 km S of Adak, AlaskaThu, Oct 14, 11:27 PM HADT · 1807 days ago · 30 km deep · 49 km away
45. 1.890 km ESE of Adak, AlaskaThu, Oct 14, 11:52 PM HADT · 1807 days ago · 54 km deep · 35 km away
46. 2.560 km SE of Adak, AlaskaFri, Oct 15, 9:05 AM HADT · 1807 days ago · 36 km deep · 32 km away
47. 1.652 km SW of Adak, AlaskaFri, Oct 15, 11:10 AM HADT · 1807 days ago · 39 km deep · 85 km away
48. 2.885 km ESE of Adak, AlaskaFri, Oct 15, 11:13 AM HADT · 1807 days ago · 52 km deep · 31 km away
49. 3.050 km ESE of Adak, AlaskaWed, Oct 20, 8:10 AM HADT · 1802 days ago · 3 km deep · 9 km away · felt by 1
50. 3.693 km ESE of Adak, AlaskaWed, Oct 20, 8:49 AM HADT · 1802 days ago · 24 km deep · 39 km away
51. 2.469 km WNW of Atka, AlaskaFri, Oct 22, 7:00 PM HADT · 1800 days ago · 120 km deep · 94 km away
52. 1.854 km SW of Adak, AlaskaSat, Oct 23, 3:06 AM HADT · 1799 days ago · 43 km deep · 85 km away
53. 2.081 km ENE of Adak, AlaskaSat, Oct 23, 5:38 PM HADT · 1799 days ago · 115 km deep · 51 km away
54. 2.133 km ESE of Adak, AlaskaSun, Oct 24, 3:51 PM HADT · 1798 days ago · 62 km deep · 24 km away
55. 3.563 km ESE of Adak, AlaskaMon, Oct 25, 10:24 AM HADT · 1797 days ago · 35 km deep · 8 km away
56. 1.889 km SW of Atka, AlaskaMon, Oct 25, 12:09 PM HADT · 1797 days ago · 26 km deep · 60 km away
57. 1.658 km SE of Adak, AlaskaMon, Oct 25, 6:18 PM HADT · 1797 days ago · 25 km deep · 17 km away
58. 1.935 km E of Adak, AlaskaMon, Oct 25, 11:39 PM HADT · 1796 days ago · 125 km deep · 27 km away
59. 1.843 km SSE of Adak, AlaskaTue, Oct 26, 9:22 AM HADT · 1796 days ago · 34 km deep · 35 km away
60. 2.759 km SSE of Adak, AlaskaTue, Oct 26, 11:33 AM HADT · 1796 days ago · 34 km deep · 35 km away

The first 60 of 122.

Before

1. 1.541 km SSE of Adak, AlaskaMon, Sep 20, 12:42 AM HADT · 1832 days ago · 36 km deep · 36 km away
2. 1.777 km SE of Adak, AlaskaSun, Sep 19, 9:09 PM HADT · 1833 days ago · 23 km deep · 24 km away
3. 1.644 km SSW of Adak, AlaskaSun, Sep 19, 7:25 PM HADT · 1833 days ago · 36 km deep · 64 km away
4. 3.224 km SSW of Adak, AlaskaFri, Sep 17, 12:40 PM HADT · 1835 days ago · 77 km deep · 58 km away
5. 3.0135 km SSW of Atka, AlaskaFri, Sep 17, 8:34 AM HADT · 1835 days ago · 14 km deep · 96 km away
6. 1.660 km SE of Adak, AlaskaTue, Sep 14, 6:47 PM HADT · 1838 days ago · 13 km deep · 31 km away
7. 1.756 km SE of Adak, AlaskaTue, Sep 14, 6:24 PM HADT · 1838 days ago · 13 km deep · 30 km away
8. 1.553 km SW of Adak, AlaskaMon, Sep 13, 9:31 AM HADT · 1839 days ago · 46 km deep · 90 km away
9. 2.957 km SSE of Adak, AlaskaSun, Sep 12, 5:44 AM HADT · 1840 days ago · 35 km deep · 32 km away
10. 3.7101 km ESE of Adak, AlaskaFri, Sep 10, 5:00 AM HADT · 1842 days ago · 35 km deep · 44 km away
11. 3.689 km SW of Atka, AlaskaThu, Sep 9, 2:44 PM HADT · 1843 days ago · 35 km deep · 57 km away
12. 1.651 km E of Adak, AlaskaWed, Sep 8, 9:32 PM HADT · 1844 days ago · 93 km deep · 33 km away
13. 1.972 km SSW of Atka, AlaskaWed, Sep 8, 7:43 PM HADT · 1844 days ago · 22 km deep · 82 km away
14. 2.7105 km SSE of Adak, AlaskaWed, Sep 8, 10:00 AM HADT · 1844 days ago · 10 km deep · 85 km away
15. 1.739 km NE of Adak, AlaskaWed, Sep 8, 3:11 AM HADT · 1844 days ago · 132 km deep · 55 km away
16. 2.278 km ENE of Adak, AlaskaWed, Sep 8, 2:59 AM HADT · 1844 days ago · 236 km deep · 55 km away
17. 1.649 km SW of Adak, AlaskaTue, Sep 7, 11:09 PM HADT · 1844 days ago · 44 km deep · 86 km away
18. 1.962 km SE of Adak, AlaskaTue, Sep 7, 9:12 AM HADT · 1845 days ago · 26 km deep · 28 km away
19. 1.663 km SSE of Adak, AlaskaMon, Sep 6, 11:07 PM HADT · 1845 days ago · 19 km deep · 40 km away
20. 1.960 km ENE of Adak, AlaskaMon, Sep 6, 5:02 PM HADT · 1846 days ago · 150 km deep · 47 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021c33z4s0. Read Sat, Sep 26, 2026, 6:44 PM UTC.