M1.6 earthquake 28 km WSW of Unalaska, Alaska

Magnitude

1.6 (ml), micro

Local time

Fri, Aug 27, 2021, 11:55 PM AKDT

UTC

2021-08-28 07:55:11 UTC

Depth

111.0 km (69.0 mi), intermediate-depth

Epicenter

53.739° N, 166.904° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

22

• Unalaska, AlaskaPopulation 4,491. Forecast29 kmWSW

After

1. 2.066 km SW of Unalaska, AlaskaSat, Aug 28, 5:14 PM AKDT · 1851 days ago · 14 km deep · 38 km away
2. 2.218 km SSE of Unalaska, AlaskaMon, Aug 30, 3:41 AM AKDT · 1850 days ago · 115 km deep · 34 km away
3. 1.688 km SSW of Unalaska, AlaskaTue, Aug 31, 2:50 AM AKDT · 1849 days ago · 24 km deep · 68 km away
4. 2.674 km SSW of Unalaska, AlaskaTue, Aug 31, 8:47 AM AKDT · 1849 days ago · 55 km deep · 57 km away
5. 2.948 km SW of Unalaska, AlaskaThu, Sep 2, 6:59 AM AKDT · 1847 days ago · 96 km deep · 23 km away
6. 1.570 km SW of Unalaska, AlaskaFri, Sep 3, 12:45 AM AKDT · 1846 days ago · 31 km deep · 44 km away
7. 2.863 km SSW of Unalaska, AlaskaSat, Sep 4, 9:48 AM AKDT · 1845 days ago · 67 km deep · 42 km away
8. 2.184 km S of Unalaska, AlaskaSun, Sep 5, 9:18 PM AKDT · 1843 days ago · 26 km deep · 68 km away
9. 1.913 km S of Akutan, AlaskaMon, Sep 6, 12:58 AM AKDT · 1843 days ago · 111 km deep · 81 km away
10. 1.645 km ESE of Unalaska, AlaskaThu, Sep 9, 6:33 AM AKDT · 1840 days ago · 63 km deep · 66 km away
11. 1.552 km SW of Unalaska, AlaskaThu, Sep 9, 7:17 AM AKDT · 1840 days ago · 14 km deep · 25 km away
12. 1.578 km SW of Unalaska, AlaskaThu, Sep 9, 8:40 AM AKDT · 1840 days ago · 31 km deep · 50 km away
13. 1.825 km SE of Akutan, AlaskaThu, Sep 9, 6:48 PM AKDT · 1839 days ago · 72 km deep · 95 km away
14. 1.8102 km E of Nikolski, AlaskaFri, Sep 10, 12:35 AM AKDT · 1839 days ago · 25 km deep · 98 km away
15. 1.65 km SW of Akutan, AlaskaWed, Sep 15, 1:35 PM AKDT · 1833 days ago · 71 km deep · 81 km away
16. 1.620 km WSW of Dutch Harbor, AlaskaThu, Sep 16, 2:19 PM AKDT · 1832 days ago · 7 km deep · 13 km away
17. 1.521 km WSW of Dutch Harbor, AlaskaThu, Sep 16, 2:33 PM AKDT · 1832 days ago · 7 km deep · 12 km away
18. 1.621 km WSW of Dutch Harbor, AlaskaThu, Sep 16, 2:59 PM AKDT · 1832 days ago · 7 km deep · 13 km away
19. 1.720 km WSW of Dutch Harbor, AlaskaThu, Sep 16, 3:48 PM AKDT · 1832 days ago · 6 km deep · 12 km away
20. 1.652 km SE of Unalaska, AlaskaThu, Sep 16, 11:24 PM AKDT · 1832 days ago · 25 km deep · 62 km away
21. 1.651 km SW of Unalaska, AlaskaFri, Sep 17, 4:29 AM AKDT · 1832 days ago · 15 km deep · 24 km away
22. 1.981 km SSE of Unalaska, AlaskaFri, Sep 17, 9:22 AM AKDT · 1832 days ago · 25 km deep · 83 km away
23. 3.457 km SSE of Unalaska, AlaskaWed, Sep 22, 1:04 AM AKDT · 1827 days ago · 43 km deep · 65 km away
24. 2.684 km S of Unalaska, AlaskaThu, Sep 23, 5:59 AM AKDT · 1826 days ago · 35 km deep · 69 km away
25. 1.818 km WSW of Dutch Harbor, AlaskaThu, Sep 23, 11:34 PM AKDT · 1825 days ago · 7 km deep · 13 km away
26. 1.820 km WSW of Dutch Harbor, AlaskaThu, Sep 23, 11:59 PM AKDT · 1825 days ago · 5 km deep · 11 km away
27. 1.720 km WSW of Dutch Harbor, AlaskaFri, Sep 24, 12:54 AM AKDT · 1825 days ago · 5 km deep · 12 km away
28. 1.712 km W of Akutan, AlaskaFri, Sep 24, 5:30 AM AKDT · 1825 days ago · 5 km deep · 76 km away
29. 1.670 km SE of Unalaska, AlaskaFri, Sep 24, 10:36 AM AKDT · 1824 days ago · 25 km deep · 84 km away
30. 1.6Fox Islands, Aleutian Islands, AlaskaSun, Sep 26, 7:21 AM AKDT · 1823 days ago · 23 km deep · 27 km away
31. 3.2109 km SSW of Unalaska, AlaskaMon, Sep 27, 2:29 AM AKDT · 1822 days ago · 29 km deep · 92 km away
32. 2.156 km SW of Unalaska, AlaskaMon, Sep 27, 9:13 AM AKDT · 1822 days ago · 89 km deep · 29 km away
33. 3.085 km SSW of Unalaska, AlaskaMon, Sep 27, 12:21 PM AKDT · 1821 days ago · 35 km deep · 68 km away
34. 1.668 km SE of Unalaska, AlaskaMon, Sep 27, 3:13 PM AKDT · 1821 days ago · 23 km deep · 82 km away
35. 1.9107 km E of Nikolski, AlaskaWed, Sep 29, 3:05 PM AKDT · 1819 days ago · 14 km deep · 93 km away
36. 1.759 km SE of Unalaska, AlaskaFri, Oct 1, 6:31 PM AKDT · 1817 days ago · 13 km deep · 76 km away
37. 2.054 km SSW of Unalaska, AlaskaSun, Oct 3, 10:14 PM AKDT · 1815 days ago · 71 km deep · 32 km away
38. 1.566 km SE of Unalaska, AlaskaMon, Oct 4, 8:48 AM AKDT · 1815 days ago · 24 km deep · 75 km away
39. 1.976 km S of Akutan, AlaskaMon, Oct 4, 9:06 PM AKDT · 1814 days ago · 34 km deep · 94 km away
40. 1.651 km S of Akutan, AlaskaWed, Oct 6, 8:11 PM AKDT · 1812 days ago · 20 km deep · 75 km away
41. 1.781 km SSE of Unalaska, AlaskaWed, Oct 6, 10:00 PM AKDT · 1812 days ago · 26 km deep · 82 km away
42. 4.177 km SSW of Unalaska, AlaskaFri, Oct 8, 9:59 PM AKDT · 1810 days ago · 44 km deep · 60 km away
43. 1.966 km S of Akutan, AlaskaSat, Oct 9, 11:59 AM AKDT · 1809 days ago · 33 km deep · 83 km away
44. 2.088 km S of Unalaska, AlaskaSun, Oct 10, 9:20 PM AKDT · 1808 days ago · 41 km deep · 72 km away
45. 3.1106 km W of Dutch Harbor, AlaskaMon, Oct 11, 12:35 PM AKDT · 1807 days ago · 14 km deep · 87 km away
46. 3.091 km SW of Unalaska, AlaskaMon, Oct 11, 1:26 PM AKDT · 1807 days ago · 35 km deep · 65 km away
47. 2.010 km ENE of Unalaska, AlaskaWed, Oct 13, 4:43 PM AKDT · 1805 days ago · 92 km deep · 39 km away
48. 2.082 km SW of Unalaska, AlaskaWed, Oct 13, 5:37 PM AKDT · 1805 days ago · 73 km deep · 54 km away
49. 2.882 km S of Unalaska, AlaskaThu, Oct 14, 4:29 AM AKDT · 1805 days ago · 34 km deep · 67 km away
50. 3.887 km SSW of Unalaska, AlaskaThu, Oct 14, 12:19 PM AKDT · 1804 days ago · 35 km deep · 69 km away
51. 2.890 km S of Unalaska, AlaskaFri, Oct 15, 4:20 AM AKDT · 1804 days ago · 35 km deep · 75 km away
52. 3.685 km WSW of Unalaska, AlaskaSat, Oct 16, 2:26 PM AKDT · 1802 days ago · 113 km deep · 57 km away
53. 1.746 km SW of Unalaska, AlaskaTue, Oct 19, 2:32 PM AKDT · 1799 days ago · 18 km deep · 19 km away
54. 2.026 km ESE of Unalaska, AlaskaTue, Oct 19, 5:41 PM AKDT · 1799 days ago · 72 km deep · 50 km away
55. 3.686 km ENE of Nikolski, AlaskaWed, Oct 20, 9:00 AM AKDT · 1799 days ago · 76 km deep · 76 km away
56. 1.787 km SSW of Unalaska, AlaskaWed, Oct 20, 6:57 PM AKDT · 1798 days ago · 26 km deep · 68 km away
57. 1.719 km WSW of Dutch Harbor, AlaskaSun, Oct 24, 9:16 PM AKDT · 1794 days ago · 6 km deep · 12 km away
58. 2.051 km SSE of Akutan, AlaskaSun, Oct 24, 10:09 PM AKDT · 1794 days ago · 75 km deep · 100 km away
59. 2.270 km SE of Unalaska, AlaskaMon, Oct 25, 1:59 AM AKDT · 1794 days ago · 23 km deep · 84 km away
60. 2.014 km WSW of Dutch Harbor, AlaskaMon, Oct 25, 2:54 AM AKDT · 1794 days ago · 7 km deep · 17 km away

The first 60 of 62.

Before

1. 1.518 km S of Akutan, AlaskaFri, Aug 27, 3:32 PM AKDT · 1852 days ago · 79 km deep · 77 km away
2. 1.767 km SE of Unalaska, AlaskaTue, Aug 24, 8:58 PM AKDT · 1855 days ago · 26 km deep · 80 km away
3. 2.661 km SSE of Unalaska, AlaskaSun, Aug 22, 5:57 PM AKDT · 1857 days ago · 35 km deep · 67 km away
4. 1.954 km SW of Unalaska, AlaskaSun, Aug 22, 2:54 PM AKDT · 1857 days ago · 13 km deep · 26 km away
5. 1.861 km SSE of Akutan, AlaskaSat, Aug 21, 11:26 PM AKDT · 1858 days ago · 63 km deep · 96 km away
6. 1.629 km SSE of Akutan, AlaskaSat, Aug 21, 3:01 AM AKDT · 1859 days ago · 64 km deep · 83 km away
7. 1.617 km SSW of Unalaska, AlaskaSat, Aug 21, 12:26 AM AKDT · 1859 days ago · 77 km deep · 20 km away
8. 2.721 km S of Akutan, AlaskaThu, Aug 19, 7:00 AM AKDT · 1861 days ago · 87 km deep · 77 km away
9. 1.595 km E of Nikolski, AlaskaWed, Aug 18, 2:48 PM AKDT · 1861 days ago · 49 km deep · 98 km away
10. 1.5Fox Islands, Aleutian Islands, AlaskaTue, Aug 17, 4:42 AM AKDT · 1863 days ago · 42 km deep · 56 km away
11. 1.786 km SSW of Unalaska, AlaskaSat, Aug 14, 2:17 PM AKDT · 1865 days ago · 26 km deep · 69 km away
12. 1.743 km SW of Unalaska, AlaskaSat, Aug 14, 8:23 AM AKDT · 1866 days ago · 8 km deep · 17 km away
13. 2.615 km ESE of Akutan, AlaskaThu, Aug 12, 8:42 AM AKDT · 1868 days ago · 82 km deep · 96 km away
14. 1.669 km SE of Unalaska, AlaskaTue, Aug 10, 10:35 PM AKDT · 1869 days ago · 26 km deep · 82 km away
15. 1.658 km SW of Unalaska, AlaskaTue, Aug 10, 5:45 AM AKDT · 1870 days ago · 74 km deep · 34 km away
16. 1.582 km SSW of Unalaska, AlaskaMon, Aug 9, 6:52 PM AKDT · 1870 days ago · 25 km deep · 63 km away
17. 1.792 km E of Nikolski, AlaskaMon, Aug 9, 6:03 AM AKDT · 1871 days ago · 26 km deep · 93 km away
18. 1.949 km SSE of Unalaska, AlaskaSat, Aug 7, 6:51 PM AKDT · 1872 days ago · 60 km deep · 56 km away
19. 3.426 km ESE of Unalaska, AlaskaFri, Aug 6, 4:28 PM AKDT · 1873 days ago · 83 km deep · 47 km away
20. 1.789 km SSW of Unalaska, AlaskaWed, Aug 4, 10:44 PM AKDT · 1875 days ago · 26 km deep · 70 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021b11h511. Read Wed, Sep 23, 2026, 5:31 AM UTC.