M1.8 earthquake 54 km SW of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Sat, Oct 23, 2021, 3:06 AM HADT

UTC

2021-10-23 12:06:34 UTC

Depth

43.4 km (27.0 mi), shallow

Epicenter

51.470° N, 177.074° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

18

After

1. 2.133 km ESE of Adak, AlaskaSun, Oct 24, 3:51 PM HADT · 1797 days ago · 62 km deep · 66 km away
2. 2.072 km W of Adak, AlaskaSun, Oct 24, 7:10 PM HADT · 1797 days ago · 77 km deep · 52 km away
3. 1.8126 km WSW of Adak, AlaskaMon, Oct 25, 5:34 AM HADT · 1797 days ago · 11 km deep · 94 km away
4. 2.0108 km W of Adak, AlaskaMon, Oct 25, 9:12 AM HADT · 1797 days ago · 83 km deep · 90 km away
5. 1.7127 km WSW of Adak, AlaskaMon, Oct 25, 9:19 AM HADT · 1796 days ago · 7 km deep · 93 km away
6. 3.563 km ESE of Adak, AlaskaMon, Oct 25, 10:24 AM HADT · 1796 days ago · 35 km deep · 86 km away
7. 1.658 km SE of Adak, AlaskaMon, Oct 25, 6:18 PM HADT · 1796 days ago · 25 km deep · 75 km away
8. 1.935 km E of Adak, AlaskaMon, Oct 25, 11:39 PM HADT · 1796 days ago · 125 km deep · 78 km away
9. 1.760 km W of Adak, AlaskaTue, Oct 26, 3:02 AM HADT · 1796 days ago · 89 km deep · 50 km away
10. 1.843 km SSE of Adak, AlaskaTue, Oct 26, 9:22 AM HADT · 1795 days ago · 34 km deep · 52 km away
11. 2.759 km SSE of Adak, AlaskaTue, Oct 26, 11:33 AM HADT · 1795 days ago · 34 km deep · 61 km away
12. 1.843 km SSE of Adak, AlaskaTue, Oct 26, 8:06 PM HADT · 1795 days ago · 37 km deep · 43 km away
13. 3.2141 km WSW of Adak, AlaskaWed, Oct 27, 3:58 AM HADT · 1795 days ago · 31 km deep · 96 km away
14. 1.740 km SSE of Adak, AlaskaWed, Oct 27, 9:52 AM HADT · 1794 days ago · 36 km deep · 48 km away
15. 1.9123 km SW of Adak, AlaskaWed, Oct 27, 11:47 PM HADT · 1794 days ago · 22 km deep · 73 km away
16. 1.7100 km WSW of Adak, AlaskaThu, Oct 28, 12:22 AM HADT · 1794 days ago · 63 km deep · 64 km away
17. 3.2118 km SSW of Adak, AlaskaThu, Oct 28, 2:06 AM HADT · 1794 days ago · 33 km deep · 68 km away
18. 2.657 km ESE of Adak, AlaskaThu, Oct 28, 3:58 AM HADT · 1794 days ago · 68 km deep · 87 km away
19. 2.073 km SE of Adak, AlaskaThu, Oct 28, 2:20 PM HADT · 1793 days ago · 23 km deep · 87 km away
20. 1.972 km WSW of Adak, AlaskaThu, Oct 28, 2:26 PM HADT · 1793 days ago · 66 km deep · 43 km away
21. 1.752 km SW of Adak, AlaskaThu, Oct 28, 4:41 PM HADT · 1793 days ago · 38 km deep · 2 km away
22. 2.949 km SSW of Adak, AlaskaThu, Oct 28, 10:55 PM HADT · 1793 days ago · 50 km deep · 19 km away
23. 3.8119 km WSW of Adak, AlaskaFri, Oct 29, 2:47 AM HADT · 1793 days ago · 88 km deep · 84 km away
24. 1.634 km E of Adak, AlaskaFri, Oct 29, 10:54 PM HADT · 1792 days ago · 9 km deep · 81 km away
25. 1.8135 km SW of Adak, AlaskaSun, Oct 31, 12:10 AM HADT · 1791 days ago · 26 km deep · 85 km away
26. 3.775 km SW of Adak, AlaskaSun, Oct 31, 4:51 AM HADT · 1791 days ago · 35 km deep · 23 km away
27. 3.343 km ENE of Adak, AlaskaMon, Nov 1, 6:48 AM HADT · 1790 days ago · 180 km deep · 95 km away
28. 2.228 km NNW of Adak, AlaskaMon, Nov 1, 9:20 AM HADT · 1789 days ago · 110 km deep · 73 km away
29. 1.6Andreanof Islands, Aleutian Islands, AlaskaMon, Nov 1, 10:44 AM HADT · 1789 days ago · 8 km deep · 66 km away
30. 2.087 km S of Adak, AlaskaTue, Nov 2, 4:42 PM HADT · 1788 days ago · 16 km deep · 60 km away
31. 2.076 km WSW of Adak, AlaskaWed, Nov 3, 6:05 PM HADT · 1787 days ago · 26 km deep · 34 km away
32. 3.6108 km WSW of Adak, AlaskaThu, Nov 4, 6:43 AM HADT · 1787 days ago · 34 km deep · 64 km away
33. 1.684 km W of Adak, AlaskaThu, Nov 4, 7:26 AM HADT · 1787 days ago · 13 km deep · 70 km away
34. 2.060 km ESE of Adak, AlaskaThu, Nov 4, 12:10 PM HADT · 1786 days ago · 39 km deep · 86 km away
35. 1.5100 km WSW of Adak, AlaskaThu, Nov 4, 8:15 PM HADT · 1786 days ago · 22 km deep · 71 km away
36. 1.560 km SSW of Adak, AlaskaFri, Nov 5, 3:09 AM HADT · 1786 days ago · 32 km deep · 10 km away
37. 3.153 km SSE of Adak, AlaskaFri, Nov 5, 4:50 AM HADT · 1786 days ago · 35 km deep · 58 km away
38. 1.665 km SSE of Adak, AlaskaFri, Nov 5, 11:01 AM HADT · 1785 days ago · 25 km deep · 59 km away
39. 3.128 km ESE of Adak, AlaskaFri, Nov 5, 8:41 PM HADT · 1785 days ago · 71 km deep · 63 km away
40. 1.698 km SW of Adak, AlaskaSat, Nov 6, 12:32 AM HADT · 1785 days ago · 45 km deep · 50 km away
41. 2.080 km WSW of Adak, AlaskaSat, Nov 6, 5:11 PM HADT · 1784 days ago · 26 km deep · 38 km away
42. 1.853 km S of Adak, AlaskaSun, Nov 7, 6:53 AM HAST · 1784 days ago · 26 km deep · 34 km away
43. 1.946 km SSE of Adak, AlaskaSun, Nov 7, 10:42 PM HAST · 1783 days ago · 40 km deep · 40 km away
44. 1.862 km W of Adak, AlaskaMon, Nov 8, 5:21 AM HAST · 1783 days ago · 87 km deep · 49 km away
45. 1.757 km SSE of Adak, AlaskaMon, Nov 8, 5:38 AM HAST · 1783 days ago · 16 km deep · 49 km away
46. 1.655 km SSE of Adak, AlaskaMon, Nov 8, 8:58 AM HAST · 1782 days ago · 26 km deep · 60 km away
47. 1.623 km SSW of Adak, AlaskaMon, Nov 8, 3:29 PM HAST · 1782 days ago · 62 km deep · 32 km away
48. 1.575 km SE of Adak, AlaskaMon, Nov 8, 7:10 PM HAST · 1782 days ago · 23 km deep · 90 km away
49. 1.768 km S of Adak, AlaskaMon, Nov 8, 10:03 PM HAST · 1782 days ago · 22 km deep · 37 km away
50. 2.879 km WSW of Adak, AlaskaWed, Nov 10, 8:17 AM HAST · 1780 days ago · 35 km deep · 38 km away
51. 1.861 km SE of Adak, AlaskaWed, Nov 10, 12:28 PM HAST · 1780 days ago · 5 km deep · 71 km away
52. 1.770 km SE of Adak, AlaskaWed, Nov 10, 3:38 PM HAST · 1780 days ago · 22 km deep · 89 km away
53. 2.050 km E of Adak, AlaskaThu, Nov 11, 4:46 AM HAST · 1780 days ago · 81 km deep · 89 km away
54. 2.5139 km SW of Adak, AlaskaThu, Nov 11, 7:45 AM HAST · 1780 days ago · 35 km deep · 91 km away
55. 1.8130 km WSW of Adak, AlaskaThu, Nov 11, 11:36 AM HAST · 1779 days ago · 26 km deep · 84 km away
56. 1.841 km W of Adak, AlaskaThu, Nov 11, 12:16 PM HAST · 1779 days ago · 90 km deep · 44 km away
57. 3.8Andreanof Islands, Aleutian Islands, AlaskaThu, Nov 11, 2:00 PM HAST · 1779 days ago · 21 km deep · 98 km away
58. 2.965 km SE of Adak, AlaskaThu, Nov 11, 5:21 PM HAST · 1779 days ago · 35 km deep · 72 km away
59. 1.866 km SSW of Adak, AlaskaFri, Nov 12, 4:03 PM HAST · 1778 days ago · 31 km deep · 19 km away
60. 1.5108 km SW of Adak, AlaskaFri, Nov 12, 4:12 PM HAST · 1778 days ago · 25 km deep · 57 km away

The first 60 of 171.

Before

1. 1.8123 km WSW of Adak, AlaskaFri, Oct 22, 11:27 PM HADT · 1799 days ago · 17 km deep · 81 km away
2. 1.7117 km WSW of Adak, AlaskaFri, Oct 22, 10:16 PM HADT · 1799 days ago · 29 km deep · 76 km away
3. 3.050 km ESE of Adak, AlaskaWed, Oct 20, 8:10 AM HADT · 1802 days ago · 3 km deep · 84 km away · felt by 1
4. 1.652 km SW of Adak, AlaskaFri, Oct 15, 11:10 AM HADT · 1806 days ago · 39 km deep · 3 km away
5. 2.560 km SE of Adak, AlaskaFri, Oct 15, 9:05 AM HADT · 1807 days ago · 36 km deep · 65 km away
6. 1.8Andreanof Islands, Aleutian Islands, AlaskaFri, Oct 15, 3:14 AM HADT · 1807 days ago · 26 km deep · 80 km away
7. 1.646 km S of Adak, AlaskaThu, Oct 14, 11:27 PM HADT · 1807 days ago · 30 km deep · 39 km away
8. 3.144 km SSE of Adak, AlaskaThu, Oct 14, 1:39 AM HADT · 1808 days ago · 33 km deep · 55 km away
9. 1.990 km SW of Adak, AlaskaWed, Oct 13, 3:46 AM HADT · 1809 days ago · 16 km deep · 44 km away
10. 2.855 km S of Adak, AlaskaTue, Oct 12, 10:43 PM HADT · 1809 days ago · 32 km deep · 25 km away
11. 3.746 km S of Adak, AlaskaTue, Oct 12, 8:23 AM HADT · 1810 days ago · 35 km deep · 30 km away
12. 2.961 km SSW of Adak, AlaskaMon, Oct 11, 12:26 AM HADT · 1811 days ago · 51 km deep · 20 km away
13. 1.769 km WSW of Adak, AlaskaSun, Oct 10, 11:08 PM HADT · 1811 days ago · 25 km deep · 36 km away
14. 3.0116 km WSW of Adak, AlaskaSun, Oct 10, 4:26 PM HADT · 1811 days ago · 34 km deep · 76 km away
15. 1.782 km W of Adak, AlaskaSun, Oct 10, 7:57 AM HADT · 1812 days ago · 10 km deep · 68 km away
16. 1.9Andreanof Islands, Aleutian Islands, AlaskaSun, Oct 10, 2:41 AM HADT · 1812 days ago · 23 km deep · 64 km away
17. 2.6128 km WSW of Adak, AlaskaSat, Oct 9, 8:09 PM HADT · 1812 days ago · 19 km deep · 91 km away
18. 1.745 km W of Adak, AlaskaSat, Oct 9, 2:34 AM HADT · 1813 days ago · 92 km deep · 41 km away
19. 3.340 km SE of Adak, AlaskaFri, Oct 8, 8:19 AM HADT · 1814 days ago · 35 km deep · 61 km away
20. 3.270 km SW of Adak, AlaskaFri, Oct 8, 7:10 AM HADT · 1814 days ago · 49 km deep · 22 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021dlq9aef. Read Sat, Sep 26, 2026, 5:42 AM UTC.