M1.7 earthquake 100 km WSW of Adak, Alaska

Magnitude

1.7 (ml), micro

Local time

Thu, Oct 28, 2021, 12:22 AM HADT

UTC

2021-10-28 09:22:56 UTC

Depth

62.6 km (38.9 mi), shallow

Epicenter

51.537° N, 177.988° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

11

After

1. 3.2118 km SSW of Adak, AlaskaThu, Oct 28, 2:06 AM HADT · 1792 days ago · 33 km deep · 96 km away
2. 3.6Andreanof Islands, Aleutian Islands, AlaskaThu, Oct 28, 11:23 AM HADT · 1792 days ago · 82 km deep · 42 km away
3. 1.972 km WSW of Adak, AlaskaThu, Oct 28, 2:26 PM HADT · 1791 days ago · 66 km deep · 28 km away
4. 1.752 km SW of Adak, AlaskaThu, Oct 28, 4:41 PM HADT · 1791 days ago · 38 km deep · 64 km away
5. 2.949 km SSW of Adak, AlaskaThu, Oct 28, 10:55 PM HADT · 1791 days ago · 50 km deep · 83 km away
6. 3.8119 km WSW of Adak, AlaskaFri, Oct 29, 2:47 AM HADT · 1791 days ago · 88 km deep · 20 km away
7. 1.8147 km WSW of Adak, AlaskaSat, Oct 30, 6:09 AM HADT · 1790 days ago · 29 km deep · 48 km away
8. 1.8135 km SW of Adak, AlaskaSun, Oct 31, 12:10 AM HADT · 1789 days ago · 26 km deep · 51 km away
9. 3.775 km SW of Adak, AlaskaSun, Oct 31, 4:51 AM HADT · 1789 days ago · 35 km deep · 48 km away
10. 1.6Andreanof Islands, Aleutian Islands, AlaskaMon, Nov 1, 10:44 AM HADT · 1788 days ago · 8 km deep · 38 km away
11. 2.076 km WSW of Adak, AlaskaWed, Nov 3, 6:05 PM HADT · 1785 days ago · 26 km deep · 30 km away
12. 3.6108 km WSW of Adak, AlaskaThu, Nov 4, 6:43 AM HADT · 1785 days ago · 34 km deep · 18 km away
13. 1.684 km W of Adak, AlaskaThu, Nov 4, 7:26 AM HADT · 1785 days ago · 13 km deep · 37 km away
14. 1.5100 km WSW of Adak, AlaskaThu, Nov 4, 8:15 PM HADT · 1784 days ago · 22 km deep · 15 km away
15. 1.560 km SSW of Adak, AlaskaFri, Nov 5, 3:09 AM HADT · 1784 days ago · 32 km deep · 70 km away
16. 2.5159 km WSW of Adak, AlaskaFri, Nov 5, 2:35 PM HADT · 1783 days ago · 72 km deep · 58 km away
17. 1.7148 km W of Adak, AlaskaFri, Nov 5, 5:10 PM HADT · 1783 days ago · 13 km deep · 59 km away
18. 1.698 km SW of Adak, AlaskaSat, Nov 6, 12:32 AM HADT · 1783 days ago · 45 km deep · 28 km away
19. 2.080 km WSW of Adak, AlaskaSat, Nov 6, 5:11 PM HADT · 1782 days ago · 26 km deep · 26 km away
20. 1.853 km S of Adak, AlaskaSun, Nov 7, 6:53 AM HAST · 1782 days ago · 26 km deep · 98 km away
21. 3.1161 km WSW of Adak, AlaskaSun, Nov 7, 10:04 PM HAST · 1781 days ago · 10 km deep · 60 km away
22. 1.9169 km WSW of Adak, AlaskaMon, Nov 8, 5:10 AM HAST · 1781 days ago · 21 km deep · 68 km away
23. 1.862 km W of Adak, AlaskaMon, Nov 8, 5:21 AM HAST · 1781 days ago · 87 km deep · 43 km away
24. 3.1174 km WSW of Adak, AlaskaMon, Nov 8, 6:25 AM HAST · 1781 days ago · 31 km deep · 74 km away
25. 2.0181 km W of Adak, AlaskaMon, Nov 8, 6:55 AM HAST · 1781 days ago · 77 km deep · 90 km away
26. 1.623 km SSW of Adak, AlaskaMon, Nov 8, 3:29 PM HAST · 1780 days ago · 62 km deep · 88 km away
27. 1.768 km S of Adak, AlaskaMon, Nov 8, 10:03 PM HAST · 1780 days ago · 22 km deep · 97 km away
28. 2.9132 km WNW of Adak, AlaskaTue, Nov 9, 6:39 AM HAST · 1780 days ago · 179 km deep · 89 km away
29. 2.879 km WSW of Adak, AlaskaWed, Nov 10, 8:17 AM HAST · 1779 days ago · 35 km deep · 26 km away
30. 2.5139 km SW of Adak, AlaskaThu, Nov 11, 7:45 AM HAST · 1778 days ago · 35 km deep · 48 km away
31. 1.8130 km WSW of Adak, AlaskaThu, Nov 11, 11:36 AM HAST · 1778 days ago · 26 km deep · 35 km away
32. 1.841 km W of Adak, AlaskaThu, Nov 11, 12:16 PM HAST · 1777 days ago · 90 km deep · 63 km away
33. 3.8Andreanof Islands, Aleutian Islands, AlaskaThu, Nov 11, 2:00 PM HAST · 1777 days ago · 21 km deep · 35 km away
34. 2.0138 km W of Adak, AlaskaFri, Nov 12, 12:08 PM HAST · 1776 days ago · 141 km deep · 65 km away
35. 1.866 km SSW of Adak, AlaskaFri, Nov 12, 4:03 PM HAST · 1776 days ago · 31 km deep · 75 km away
36. 1.5108 km SW of Adak, AlaskaFri, Nov 12, 4:12 PM HAST · 1776 days ago · 25 km deep · 40 km away
37. 1.7119 km SW of Adak, AlaskaFri, Nov 12, 10:08 PM HAST · 1776 days ago · 26 km deep · 40 km away
38. 1.7113 km WSW of Adak, AlaskaSat, Nov 13, 1:54 PM HAST · 1775 days ago · 18 km deep · 13 km away
39. 1.745 km SW of Adak, AlaskaSat, Nov 13, 9:20 PM HAST · 1775 days ago · 47 km deep · 62 km away
40. 2.0Andreanof Islands, Aleutian Islands, AlaskaSun, Nov 14, 1:39 AM HAST · 1775 days ago · 34 km deep · 28 km away
41. 1.7143 km WSW of Adak, AlaskaMon, Nov 15, 7:53 PM HAST · 1773 days ago · 24 km deep · 45 km away
42. 1.571 km SW of Adak, AlaskaTue, Nov 16, 10:24 PM HAST · 1772 days ago · 38 km deep · 35 km away
43. 1.6132 km WSW of Adak, AlaskaWed, Nov 17, 1:20 PM HAST · 1771 days ago · 23 km deep · 35 km away
44. 1.5116 km WSW of Adak, AlaskaWed, Nov 17, 2:47 PM HAST · 1771 days ago · 28 km deep · 17 km away
45. 1.7143 km SW of Adak, AlaskaWed, Nov 17, 4:07 PM HAST · 1771 days ago · 26 km deep · 50 km away
46. 1.8139 km SW of Adak, AlaskaWed, Nov 17, 7:19 PM HAST · 1771 days ago · 22 km deep · 45 km away
47. 2.0173 km WSW of Adak, AlaskaWed, Nov 17, 11:18 PM HAST · 1771 days ago · 23 km deep · 73 km away
48. 1.9149 km WSW of Adak, AlaskaWed, Nov 17, 11:47 PM HAST · 1771 days ago · 24 km deep · 49 km away
49. 5.0128 km WSW of Adak, AlaskaWed, Nov 17, 11:50 PM HAST · 1771 days ago · 48 km deep · 29 km away · felt by 1
50. 2.8112 km WSW of Adak, AlaskaThu, Nov 18, 7:21 AM HAST · 1771 days ago · 22 km deep · 17 km away
51. 1.7126 km WSW of Adak, AlaskaThu, Nov 18, 9:43 AM HAST · 1771 days ago · 13 km deep · 28 km away
52. 1.6129 km WSW of Adak, AlaskaThu, Nov 18, 11:00 AM HAST · 1771 days ago · 25 km deep · 34 km away
53. 1.8180 km WSW of Adak, AlaskaThu, Nov 18, 2:09 PM HAST · 1770 days ago · 26 km deep · 80 km away
54. 1.7126 km SW of Adak, AlaskaThu, Nov 18, 3:15 PM HAST · 1770 days ago · 51 km deep · 34 km away
55. 2.560 km SSW of Adak, AlaskaThu, Nov 18, 7:55 PM HAST · 1770 days ago · 35 km deep · 65 km away
56. 1.888 km WSW of Adak, AlaskaFri, Nov 19, 11:58 PM HAST · 1769 days ago · 14 km deep · 18 km away
57. 1.9143 km WSW of Adak, AlaskaSat, Nov 20, 8:56 AM HAST · 1769 days ago · 23 km deep · 43 km away
58. 2.156 km W of Adak, AlaskaSat, Nov 20, 9:34 AM HAST · 1769 days ago · 101 km deep · 46 km away
59. 1.5136 km WSW of Adak, AlaskaSat, Nov 20, 3:03 PM HAST · 1768 days ago · -2 km deep · 41 km away
60. 1.6130 km WSW of Adak, AlaskaSun, Nov 21, 8:30 AM HAST · 1768 days ago · 25 km deep · 30 km away

The first 60 of 139.

Before

1. 1.9123 km SW of Adak, AlaskaWed, Oct 27, 11:47 PM HADT · 1792 days ago · 22 km deep · 43 km away
2. 3.2141 km WSW of Adak, AlaskaWed, Oct 27, 3:58 AM HADT · 1793 days ago · 31 km deep · 43 km away
3. 1.760 km W of Adak, AlaskaTue, Oct 26, 3:02 AM HADT · 1794 days ago · 89 km deep · 47 km away
4. 1.7127 km WSW of Adak, AlaskaMon, Oct 25, 9:19 AM HADT · 1795 days ago · 7 km deep · 29 km away
5. 2.0108 km W of Adak, AlaskaMon, Oct 25, 9:12 AM HADT · 1795 days ago · 83 km deep · 40 km away
6. 1.8126 km WSW of Adak, AlaskaMon, Oct 25, 5:34 AM HADT · 1795 days ago · 11 km deep · 30 km away
7. 1.9172 km WSW of Adak, AlaskaMon, Oct 25, 4:43 AM HADT · 1795 days ago · 22 km deep · 72 km away
8. 2.072 km W of Adak, AlaskaSun, Oct 24, 7:10 PM HADT · 1795 days ago · 77 km deep · 33 km away
9. 1.854 km SW of Adak, AlaskaSat, Oct 23, 3:06 AM HADT · 1797 days ago · 43 km deep · 64 km away
10. 1.8123 km WSW of Adak, AlaskaFri, Oct 22, 11:27 PM HADT · 1797 days ago · 17 km deep · 24 km away
11. 1.7117 km WSW of Adak, AlaskaFri, Oct 22, 10:16 PM HADT · 1797 days ago · 29 km deep · 18 km away
12. 3.1Andreanof Islands, Aleutian Islands, AlaskaFri, Oct 22, 3:33 AM HADT · 1798 days ago · 146 km deep · 64 km away
13. 4.1194 km WSW of Adak, AlaskaSun, Oct 17, 4:08 PM HADT · 1802 days ago · 42 km deep · 94 km away
14. 3.2181 km WSW of Adak, AlaskaSat, Oct 16, 5:11 AM HADT · 1804 days ago · 30 km deep · 81 km away
15. 1.652 km SW of Adak, AlaskaFri, Oct 15, 11:10 AM HADT · 1805 days ago · 39 km deep · 63 km away
16. 2.9139 km W of Adak, AlaskaFri, Oct 15, 9:55 AM HADT · 1805 days ago · 24 km deep · 60 km away
17. 1.8Andreanof Islands, Aleutian Islands, AlaskaFri, Oct 15, 3:14 AM HADT · 1805 days ago · 26 km deep · 72 km away
18. 3.2157 km SW of Adak, AlaskaThu, Oct 14, 4:17 AM HADT · 1806 days ago · 33 km deep · 84 km away
19. 3.0199 km WSW of Adak, AlaskaThu, Oct 14, 3:39 AM HADT · 1806 days ago · 10 km deep · 99 km away
20. 2.7157 km WSW of Adak, AlaskaThu, Oct 14, 3:24 AM HADT · 1806 days ago · 95 km deep · 61 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021dty9780. Read Thu, Sep 24, 2026, 9:19 AM UTC.