M1.6 earthquake 63 km SSW of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Tue, Sep 28, 2021, 12:25 AM HADT

UTC

2021-09-28 09:25:30 UTC

Depth

19.5 km (12.1 mi), shallow

Epicenter

51.373° N, 177.066° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

21

After

1. 1.861 km SE of Adak, AlaskaTue, Sep 28, 3:03 PM HADT · 1822 days ago · 23 km deep · 75 km away
2. 3.1135 km WSW of Adak, AlaskaWed, Sep 29, 12:55 AM HADT · 1821 days ago · 30 km deep · 86 km away
3. 2.1102 km WSW of Adak, AlaskaThu, Sep 30, 2:54 AM HADT · 1820 days ago · 8 km deep · 70 km away
4. 3.837 km ENE of Adak, AlaskaThu, Sep 30, 4:32 PM HADT · 1819 days ago · 128 km deep · 94 km away
5. 2.623 km SSE of Adak, AlaskaFri, Oct 1, 6:13 AM HADT · 1819 days ago · 69 km deep · 53 km away
6. 1.763 km SE of Adak, AlaskaFri, Oct 1, 8:15 PM HADT · 1818 days ago · 27 km deep · 78 km away
7. 1.7144 km WSW of Adak, AlaskaSat, Oct 2, 8:43 AM HADT · 1818 days ago · 24 km deep · 99 km away
8. 2.7116 km WSW of Adak, AlaskaSat, Oct 2, 10:35 AM HADT · 1818 days ago · 13 km deep · 80 km away
9. 1.926 km S of Adak, AlaskaSat, Oct 2, 2:49 PM HADT · 1818 days ago · 63 km deep · 45 km away
10. 3.9116 km WSW of Adak, AlaskaSat, Oct 2, 4:45 PM HADT · 1817 days ago · 35 km deep · 69 km away
11. 1.967 km SE of Adak, AlaskaSun, Oct 3, 9:57 AM HADT · 1817 days ago · 22 km deep · 87 km away
12. 1.539 km SSE of Adak, AlaskaSun, Oct 3, 11:36 AM HADT · 1817 days ago · 26 km deep · 52 km away
13. 1.8133 km SW of Adak, AlaskaSun, Oct 3, 12:33 PM HADT · 1817 days ago · 25 km deep · 84 km away
14. 3.1140 km SW of Adak, AlaskaTue, Oct 5, 5:42 AM HADT · 1815 days ago · 28 km deep · 87 km away
15. 2.3130 km SW of Adak, AlaskaTue, Oct 5, 12:57 PM HADT · 1815 days ago · 28 km deep · 75 km away
16. 1.9Andreanof Islands, Aleutian Islands, AlaskaWed, Oct 6, 8:43 PM HADT · 1813 days ago · 24 km deep · 5 km away
17. 1.8112 km SW of Adak, AlaskaWed, Oct 6, 8:53 PM HADT · 1813 days ago · 18 km deep · 51 km away
18. 1.6111 km SW of Adak, AlaskaWed, Oct 6, 8:56 PM HADT · 1813 days ago · 26 km deep · 51 km away
19. 1.6106 km SW of Adak, AlaskaWed, Oct 6, 9:54 PM HADT · 1813 days ago · 23 km deep · 54 km away
20. 1.6111 km SW of Adak, AlaskaWed, Oct 6, 10:02 PM HADT · 1813 days ago · 15 km deep · 53 km away
21. 1.8121 km SW of Adak, AlaskaWed, Oct 6, 11:19 PM HADT · 1813 days ago · 21 km deep · 68 km away
22. 2.5105 km WSW of Adak, AlaskaThu, Oct 7, 2:25 AM HADT · 1813 days ago · 48 km deep · 66 km away
23. 1.981 km WSW of Adak, AlaskaThu, Oct 7, 10:05 PM HADT · 1812 days ago · 30 km deep · 46 km away
24. 3.270 km SW of Adak, AlaskaFri, Oct 8, 7:10 AM HADT · 1812 days ago · 49 km deep · 25 km away
25. 3.340 km SE of Adak, AlaskaFri, Oct 8, 8:19 AM HADT · 1812 days ago · 35 km deep · 64 km away
26. 1.745 km W of Adak, AlaskaSat, Oct 9, 2:34 AM HADT · 1811 days ago · 92 km deep · 51 km away
27. 2.6128 km WSW of Adak, AlaskaSat, Oct 9, 8:09 PM HADT · 1810 days ago · 19 km deep · 92 km away
28. 1.9Andreanof Islands, Aleutian Islands, AlaskaSun, Oct 10, 2:41 AM HADT · 1810 days ago · 23 km deep · 64 km away
29. 1.782 km W of Adak, AlaskaSun, Oct 10, 7:57 AM HADT · 1810 days ago · 10 km deep · 76 km away
30. 3.0116 km WSW of Adak, AlaskaSun, Oct 10, 4:26 PM HADT · 1809 days ago · 34 km deep · 77 km away
31. 1.769 km WSW of Adak, AlaskaSun, Oct 10, 11:08 PM HADT · 1809 days ago · 25 km deep · 43 km away
32. 2.961 km SSW of Adak, AlaskaMon, Oct 11, 12:26 AM HADT · 1809 days ago · 51 km deep · 14 km away
33. 3.746 km S of Adak, AlaskaTue, Oct 12, 8:23 AM HADT · 1808 days ago · 35 km deep · 31 km away
34. 2.855 km S of Adak, AlaskaTue, Oct 12, 10:43 PM HADT · 1807 days ago · 32 km deep · 22 km away
35. 1.990 km SW of Adak, AlaskaWed, Oct 13, 3:46 AM HADT · 1807 days ago · 16 km deep · 44 km away
36. 3.144 km SSE of Adak, AlaskaThu, Oct 14, 1:39 AM HADT · 1806 days ago · 33 km deep · 57 km away
37. 3.2157 km SW of Adak, AlaskaThu, Oct 14, 4:17 AM HADT · 1806 days ago · 33 km deep · 97 km away
38. 1.646 km S of Adak, AlaskaThu, Oct 14, 11:27 PM HADT · 1805 days ago · 30 km deep · 39 km away
39. 1.8Andreanof Islands, Aleutian Islands, AlaskaFri, Oct 15, 3:14 AM HADT · 1805 days ago · 26 km deep · 72 km away
40. 2.560 km SE of Adak, AlaskaFri, Oct 15, 9:05 AM HADT · 1805 days ago · 36 km deep · 64 km away
41. 1.652 km SW of Adak, AlaskaFri, Oct 15, 11:10 AM HADT · 1805 days ago · 39 km deep · 14 km away
42. 3.050 km ESE of Adak, AlaskaWed, Oct 20, 8:10 AM HADT · 1800 days ago · 3 km deep · 88 km away · felt by 1
43. 1.7117 km WSW of Adak, AlaskaFri, Oct 22, 10:16 PM HADT · 1797 days ago · 29 km deep · 77 km away
44. 1.8123 km WSW of Adak, AlaskaFri, Oct 22, 11:27 PM HADT · 1797 days ago · 17 km deep · 81 km away
45. 1.854 km SW of Adak, AlaskaSat, Oct 23, 3:06 AM HADT · 1797 days ago · 43 km deep · 11 km away
46. 2.133 km ESE of Adak, AlaskaSun, Oct 24, 3:51 PM HADT · 1796 days ago · 62 km deep · 70 km away
47. 2.072 km W of Adak, AlaskaSun, Oct 24, 7:10 PM HADT · 1795 days ago · 77 km deep · 60 km away
48. 1.8126 km WSW of Adak, AlaskaMon, Oct 25, 5:34 AM HADT · 1795 days ago · 11 km deep · 96 km away
49. 2.0108 km W of Adak, AlaskaMon, Oct 25, 9:12 AM HADT · 1795 days ago · 83 km deep · 97 km away
50. 1.7127 km WSW of Adak, AlaskaMon, Oct 25, 9:19 AM HADT · 1795 days ago · 7 km deep · 95 km away
51. 3.563 km ESE of Adak, AlaskaMon, Oct 25, 10:24 AM HADT · 1795 days ago · 35 km deep · 88 km away
52. 1.658 km SE of Adak, AlaskaMon, Oct 25, 6:18 PM HADT · 1794 days ago · 25 km deep · 76 km away
53. 1.935 km E of Adak, AlaskaMon, Oct 25, 11:39 PM HADT · 1794 days ago · 125 km deep · 84 km away
54. 1.760 km W of Adak, AlaskaTue, Oct 26, 3:02 AM HADT · 1794 days ago · 89 km deep · 60 km away
55. 1.843 km SSE of Adak, AlaskaTue, Oct 26, 9:22 AM HADT · 1794 days ago · 34 km deep · 54 km away
56. 2.759 km SSE of Adak, AlaskaTue, Oct 26, 11:33 AM HADT · 1794 days ago · 34 km deep · 61 km away
57. 1.843 km SSE of Adak, AlaskaTue, Oct 26, 8:06 PM HADT · 1793 days ago · 37 km deep · 44 km away
58. 3.2141 km WSW of Adak, AlaskaWed, Oct 27, 3:58 AM HADT · 1793 days ago · 31 km deep · 94 km away
59. 1.740 km SSE of Adak, AlaskaWed, Oct 27, 9:52 AM HADT · 1793 days ago · 36 km deep · 51 km away
60. 1.9123 km SW of Adak, AlaskaWed, Oct 27, 11:47 PM HADT · 1792 days ago · 22 km deep · 69 km away

The first 60 of 145.

Before

1. 1.653 km SE of Adak, AlaskaMon, Sep 27, 2:21 PM HADT · 1823 days ago · 32 km deep · 73 km away
2. 2.861 km SE of Adak, AlaskaSun, Sep 26, 10:39 PM HADT · 1823 days ago · 35 km deep · 66 km away
3. 2.1110 km SW of Adak, AlaskaSat, Sep 25, 5:21 PM HADT · 1824 days ago · 26 km deep · 55 km away
4. 1.543 km S of Adak, AlaskaFri, Sep 24, 1:58 PM HADT · 1826 days ago · 43 km deep · 31 km away
5. 1.619 km SSW of Adak, AlaskaFri, Sep 24, 8:25 AM HADT · 1826 days ago · 75 km deep · 44 km away
6. 2.032 km E of Adak, AlaskaFri, Sep 24, 3:37 AM HADT · 1826 days ago · 75 km deep · 83 km away
7. 1.692 km WSW of Adak, AlaskaFri, Sep 24, 1:02 AM HADT · 1826 days ago · 13 km deep · 53 km away
8. 3.1121 km WSW of Adak, AlaskaThu, Sep 23, 3:00 PM HADT · 1827 days ago · 78 km deep · 93 km away
9. 1.579 km S of Adak, AlaskaThu, Sep 23, 7:08 AM HADT · 1827 days ago · 26 km deep · 48 km away
10. 1.788 km WSW of Adak, AlaskaThu, Sep 23, 4:09 AM HADT · 1827 days ago · 60 km deep · 52 km away
11. 1.762 km SE of Adak, AlaskaThu, Sep 23, 1:35 AM HADT · 1827 days ago · 43 km deep · 78 km away
12. 1.559 km SE of Adak, AlaskaWed, Sep 22, 10:44 PM HADT · 1827 days ago · 26 km deep · 75 km away
13. 2.753 km SE of Adak, AlaskaWed, Sep 22, 8:40 PM HADT · 1827 days ago · 35 km deep · 64 km away
14. 1.8129 km WSW of Adak, AlaskaWed, Sep 22, 8:38 PM HADT · 1827 days ago · 11 km deep · 96 km away
15. 1.896 km SW of Adak, AlaskaWed, Sep 22, 10:24 AM HADT · 1828 days ago · 33 km deep · 51 km away
16. 1.872 km WSW of Adak, AlaskaTue, Sep 21, 3:44 AM HADT · 1829 days ago · 14 km deep · 39 km away
17. 1.9100 km WSW of Adak, AlaskaMon, Sep 20, 5:19 PM HADT · 1829 days ago · 58 km deep · 59 km away
18. 1.561 km ESE of Adak, AlaskaMon, Sep 20, 7:14 AM HADT · 1830 days ago · 44 km deep · 95 km away
19. 1.6124 km WSW of Adak, AlaskaMon, Sep 20, 3:25 AM HADT · 1830 days ago · 15 km deep · 85 km away
20. 1.688 km SW of Adak, AlaskaMon, Sep 20, 2:38 AM HADT · 1830 days ago · 37 km deep · 39 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021cgc5dnk. Read Thu, Sep 24, 2026, 12:37 PM UTC.