M1.7 earthquake 108 km S of Unalaska, Alaska

Magnitude

1.7 (ml), micro

Local time

Sun, Oct 31, 2021, 7:39 AM AKDT

UTC

2021-10-31 15:39:42 UTC

Depth

13.3 km (8.3 mi), shallow

Epicenter

52.901° N, 166.648° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

19

• Unalaska, AlaskaPopulation 4,491. Forecast108 kmS

After

1. 1.786 km SSW of Unalaska, AlaskaSun, Oct 31, 12:02 PM AKDT · 1792 days ago · 26 km deep · 50 km away
2. 2.077 km S of Unalaska, AlaskaSun, Oct 31, 3:11 PM AKDT · 1792 days ago · 26 km deep · 32 km away
3. 2.0127 km S of Unalaska, AlaskaSun, Oct 31, 7:31 PM AKDT · 1791 days ago · 6 km deep · 18 km away
4. 1.694 km SE of Unalaska, AlaskaMon, Nov 1, 7:02 AM AKDT · 1791 days ago · 22 km deep · 72 km away
5. 2.686 km ENE of Nikolski, AlaskaMon, Nov 1, 2:14 PM AKDT · 1791 days ago · 64 km deep · 73 km away
6. 1.774 km SSW of Unalaska, AlaskaMon, Nov 1, 10:31 PM AKDT · 1790 days ago · 42 km deep · 37 km away
7. 1.849 km SSE of Unalaska, AlaskaMon, Nov 1, 11:03 PM AKDT · 1790 days ago · 48 km deep · 70 km away
8. 1.964 km SSE of Unalaska, AlaskaTue, Nov 2, 3:10 PM AKDT · 1790 days ago · 35 km deep · 52 km away
9. 2.2114 km SSE of Unalaska, AlaskaWed, Nov 3, 10:55 AM AKDT · 1789 days ago · 21 km deep · 72 km away
10. 5.269 km ESE of Nikolski, AlaskaThu, Nov 4, 12:57 AM AKDT · 1788 days ago · 39 km deep · 90 km away · felt by 5 · tsunami flag
11. 2.181 km ESE of Nikolski, AlaskaThu, Nov 4, 1:08 AM AKDT · 1788 days ago · 25 km deep · 79 km away
12. 2.759 km SSW of Unalaska, AlaskaThu, Nov 4, 3:02 AM AKDT · 1788 days ago · 29 km deep · 58 km away
13. 1.768 km SE of Unalaska, AlaskaFri, Nov 5, 3:24 AM AKDT · 1787 days ago · 22 km deep · 83 km away
14. 2.298 km S of Unalaska, AlaskaFri, Nov 5, 4:43 PM AKDT · 1787 days ago · 26 km deep · 18 km away
15. 1.681 km SW of Unalaska, AlaskaSat, Nov 6, 3:37 PM AKDT · 1786 days ago · 13 km deep · 59 km away
16. 1.5103 km E of Nikolski, AlaskaSun, Nov 7, 1:37 AM AKDT · 1785 days ago · 26 km deep · 46 km away
17. 1.5105 km E of Nikolski, AlaskaSun, Nov 7, 1:26 AM AKST · 1785 days ago · 7 km deep · 44 km away
18. 3.282 km S of Unalaska, AlaskaSun, Nov 7, 3:34 AM AKST · 1785 days ago · 27 km deep · 27 km away
19. 2.182 km S of Unalaska, AlaskaSun, Nov 7, 4:59 AM AKST · 1785 days ago · 26 km deep · 26 km away
20. 1.623 km S of Unalaska, AlaskaSun, Nov 7, 8:31 PM AKST · 1784 days ago · 71 km deep · 86 km away
21. 1.623 km S of Unalaska, AlaskaSun, Nov 7, 8:31 PM AKST · 1784 days ago · 71 km deep · 86 km away
22. 3.986 km SSW of Unalaska, AlaskaTue, Nov 9, 4:07 AM AKST · 1783 days ago · 42 km deep · 42 km away
23. 1.894 km SSW of Unalaska, AlaskaTue, Nov 9, 8:36 AM AKST · 1783 days ago · 26 km deep · 32 km away
24. 3.1199 km S of Unalaska, AlaskaWed, Nov 10, 6:22 AM AKST · 1782 days ago · 10 km deep · 98 km away
25. 1.554 km SE of Unalaska, AlaskaWed, Nov 10, 4:24 PM AKST · 1782 days ago · 55 km deep · 93 km away
26. 1.845 km SW of Unalaska, AlaskaSat, Nov 13, 5:59 AM AKST · 1779 days ago · 10 km deep · 79 km away
27. 2.675 km SSW of Unalaska, AlaskaSat, Nov 13, 7:36 AM AKST · 1779 days ago · 41 km deep · 35 km away
28. 1.5100 km SSW of Unalaska, AlaskaSat, Nov 13, 3:54 PM AKST · 1779 days ago · 13 km deep · 24 km away
29. 3.539 km SSE of Unalaska, AlaskaSat, Nov 13, 4:50 PM AKST · 1779 days ago · 65 km deep · 78 km away
30. 1.629 km S of Unalaska, AlaskaMon, Nov 15, 1:36 AM AKST · 1777 days ago · 13 km deep · 80 km away
31. 1.854 km E of Nikolski, AlaskaMon, Nov 15, 6:12 PM AKST · 1776 days ago · 74 km deep · 94 km away
32. 2.290 km SW of Unalaska, AlaskaTue, Nov 16, 11:51 AM AKST · 1776 days ago · 53 km deep · 59 km away
33. 1.965 km S of Unalaska, AlaskaTue, Nov 16, 11:39 PM AKST · 1775 days ago · 71 km deep · 43 km away
34. 2.0107 km ESE of Nikolski, AlaskaWed, Nov 17, 12:10 AM AKST · 1775 days ago · 15 km deep · 72 km away
35. 1.791 km SSW of Unalaska, AlaskaThu, Nov 18, 4:19 AM AKST · 1774 days ago · 26 km deep · 30 km away
36. 1.824 km S of Unalaska, AlaskaThu, Nov 18, 11:25 AM AKST · 1774 days ago · 25 km deep · 84 km away
37. 2.390 km SE of Unalaska, AlaskaFri, Nov 19, 10:08 PM AKST · 1772 days ago · 46 km deep · 76 km away
38. 1.892 km SSW of Unalaska, AlaskaSat, Nov 20, 3:22 AM AKST · 1772 days ago · 46 km deep · 50 km away
39. 2.172 km E of Nikolski, AlaskaSun, Nov 21, 3:56 PM AKST · 1771 days ago · 35 km deep · 76 km away
40. 2.983 km SSW of Unalaska, AlaskaTue, Nov 23, 1:42 AM AKST · 1769 days ago · 35 km deep · 53 km away
41. 1.641 km SW of Unalaska, AlaskaWed, Nov 24, 12:46 AM AKST · 1768 days ago · 68 km deep · 76 km away
42. 2.270 km SSE of Unalaska, AlaskaThu, Nov 25, 2:20 PM AKST · 1767 days ago · 37 km deep · 51 km away
43. 1.656 km SW of Unalaska, AlaskaThu, Nov 25, 4:49 PM AKST · 1767 days ago · 71 km deep · 69 km away
44. 2.0140 km S of Unalaska, AlaskaSat, Nov 27, 1:51 PM AKST · 1765 days ago · 26 km deep · 38 km away
45. 2.988 km S of Unalaska, AlaskaSat, Nov 27, 10:47 PM AKST · 1764 days ago · 61 km deep · 24 km away
46. 2.197 km E of Nikolski, AlaskaMon, Nov 29, 5:06 AM AKST · 1763 days ago · 26 km deep · 52 km away
47. 2.2103 km E of Nikolski, AlaskaMon, Nov 29, 6:23 PM AKST · 1762 days ago · 26 km deep · 45 km away
48. 1.985 km ENE of Nikolski, AlaskaTue, Nov 30, 1:50 AM AKST · 1762 days ago · 53 km deep · 72 km away
49. 1.776 km SW of Unalaska, AlaskaWed, Dec 1, 4:07 AM AKST · 1761 days ago · 11 km deep · 71 km away
50. 1.673 km S of Akutan, AlaskaWed, Dec 1, 10:06 PM AKST · 1760 days ago · 17 km deep · 94 km away
51. 2.7107 km E of Nikolski, AlaskaThu, Dec 2, 2:05 PM AKST · 1760 days ago · 35 km deep · 42 km away
52. 1.987 km ENE of Nikolski, AlaskaSat, Dec 4, 4:19 AM AKST · 1758 days ago · 56 km deep · 73 km away
53. 1.654 km SW of Unalaska, AlaskaSat, Dec 4, 9:04 PM AKST · 1757 days ago · 13 km deep · 77 km away
54. 2.066 km SE of Unalaska, AlaskaSun, Dec 5, 8:38 PM AKST · 1756 days ago · 39 km deep · 88 km away
55. 1.877 km SE of Unalaska, AlaskaWed, Dec 8, 4:23 PM AKST · 1754 days ago · 20 km deep · 78 km away
56. 2.268 km SE of Unalaska, AlaskaSat, Dec 11, 1:33 PM AKST · 1751 days ago · 29 km deep · 76 km away
57. 2.173 km SE of Unalaska, AlaskaMon, Dec 13, 2:07 PM AKST · 1749 days ago · 21 km deep · 90 km away
58. 1.964 km SW of Unalaska, AlaskaMon, Dec 13, 5:06 PM AKST · 1749 days ago · 75 km deep · 77 km away
59. 1.8117 km SSW of Unalaska, AlaskaTue, Dec 14, 9:26 AM AKST · 1748 days ago · 17 km deep · 18 km away
60. 2.7129 km SSE of Unalaska, AlaskaWed, Dec 15, 12:35 AM AKST · 1747 days ago · 10 km deep · 76 km away

The first 60 of 79.

Before

1. 1.890 km E of Nikolski, AlaskaSun, Oct 31, 5:39 AM AKDT · 1792 days ago · 51 km deep · 59 km away
2. 3.676 km S of Unalaska, AlaskaSun, Oct 31, 4:43 AM AKDT · 1792 days ago · 35 km deep · 32 km away
3. 1.8109 km SE of Unalaska, AlaskaSun, Oct 31, 4:08 AM AKDT · 1792 days ago · 15 km deep · 72 km away
4. 2.074 km SSW of Unalaska, AlaskaFri, Oct 29, 1:54 AM AKDT · 1794 days ago · 26 km deep · 36 km away
5. 3.470 km SSW of Unalaska, AlaskaThu, Oct 28, 11:39 PM AKDT · 1794 days ago · 30 km deep · 41 km away
6. 3.172 km SSW of Unalaska, AlaskaThu, Oct 28, 11:00 PM AKDT · 1794 days ago · 35 km deep · 39 km away
7. 4.477 km S of Unalaska, AlaskaThu, Oct 28, 10:28 PM AKDT · 1794 days ago · 10 km deep · 32 km away
8. 1.9Fox Islands, Aleutian Islands, AlaskaThu, Oct 28, 9:55 PM AKDT · 1794 days ago · 21 km deep · 35 km away
9. 2.590 km S of Unalaska, AlaskaThu, Oct 28, 2:44 AM AKDT · 1795 days ago · 29 km deep · 18 km away
10. 2.270 km SE of Unalaska, AlaskaMon, Oct 25, 1:59 AM AKDT · 1798 days ago · 23 km deep · 87 km away
11. 2.9102 km E of Nikolski, AlaskaSat, Oct 23, 6:57 PM AKDT · 1799 days ago · 35 km deep · 49 km away
12. 3.0102 km E of Nikolski, AlaskaSat, Oct 23, 6:13 PM AKDT · 1800 days ago · 35 km deep · 48 km away
13. 3.199 km E of Nikolski, AlaskaSat, Oct 23, 5:54 PM AKDT · 1800 days ago · 35 km deep · 51 km away
14. 3.0138 km SE of Unalaska, AlaskaSat, Oct 23, 1:54 AM AKDT · 1800 days ago · 8 km deep · 88 km away
15. 1.787 km SSW of Unalaska, AlaskaWed, Oct 20, 6:57 PM AKDT · 1802 days ago · 26 km deep · 33 km away
16. 3.686 km ENE of Nikolski, AlaskaWed, Oct 20, 9:00 AM AKDT · 1803 days ago · 76 km deep · 77 km away
17. 1.746 km SW of Unalaska, AlaskaTue, Oct 19, 2:32 PM AKDT · 1804 days ago · 18 km deep · 83 km away
18. 2.890 km S of Unalaska, AlaskaFri, Oct 15, 4:20 AM AKDT · 1808 days ago · 35 km deep · 21 km away
19. 3.887 km SSW of Unalaska, AlaskaThu, Oct 14, 12:19 PM AKDT · 1809 days ago · 35 km deep · 30 km away
20. 2.882 km S of Unalaska, AlaskaThu, Oct 14, 4:29 AM AKDT · 1809 days ago · 34 km deep · 28 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021dz0jge9. Read Sun, Sep 27, 2026, 2:10 PM UTC.