M1.6 earthquake 66 km SW of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Fri, Dec 3, 2021, 2:40 PM HAST

UTC

2021-12-04 00:40:35 UTC

Depth

39.9 km (24.8 mi), shallow

Epicenter

51.467° N, 177.330° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

16

After

1. 3.352 km SSE of Adak, AlaskaSat, Dec 4, 4:49 AM HAST · 1758 days ago · 35 km deep · 63 km away
2. 2.0136 km WSW of Adak, AlaskaSat, Dec 4, 1:28 PM HAST · 1758 days ago · 20 km deep · 74 km away
3. 2.868 km WSW of Adak, AlaskaSat, Dec 4, 3:45 PM HAST · 1758 days ago · 35 km deep · 18 km away
4. 1.856 km S of Adak, AlaskaSun, Dec 5, 9:05 AM HAST · 1757 days ago · 45 km deep · 60 km away
5. 2.0132 km W of Adak, AlaskaSun, Dec 5, 11:15 PM HAST · 1757 days ago · 15 km deep · 88 km away
6. 1.887 km WSW of Adak, AlaskaMon, Dec 6, 9:24 PM HAST · 1756 days ago · 36 km deep · 29 km away
7. 2.7144 km WSW of Adak, AlaskaTue, Dec 7, 9:33 AM HAST · 1755 days ago · 11 km deep · 84 km away
8. 1.7143 km W of Adak, AlaskaTue, Dec 7, 12:36 PM HAST · 1755 days ago · 8 km deep · 97 km away
9. 1.956 km SSE of Adak, AlaskaWed, Dec 8, 2:09 AM HAST · 1754 days ago · 16 km deep · 80 km away
10. 2.076 km SW of Adak, AlaskaWed, Dec 8, 5:08 AM HAST · 1754 days ago · 31 km deep · 14 km away
11. 2.8143 km WSW of Adak, AlaskaWed, Dec 8, 6:31 PM HAST · 1754 days ago · 32 km deep · 81 km away
12. 2.772 km SE of Adak, AlaskaThu, Dec 9, 12:13 AM HAST · 1754 days ago · 35 km deep · 98 km away
13. 1.963 km SSW of Adak, AlaskaThu, Dec 9, 8:04 AM HAST · 1753 days ago · 35 km deep · 30 km away
14. 1.538 km SW of Adak, AlaskaFri, Dec 10, 7:27 PM HAST · 1752 days ago · 26 km deep · 28 km away
15. 1.640 km SE of Adak, AlaskaFri, Dec 10, 11:15 PM HAST · 1752 days ago · 31 km deep · 73 km away
16. 1.6Andreanof Islands, Aleutian Islands, AlaskaSat, Dec 11, 1:20 AM HAST · 1752 days ago · 19 km deep · 74 km away
17. 1.592 km SW of Adak, AlaskaSat, Dec 11, 5:27 AM HAST · 1751 days ago · 32 km deep · 26 km away
18. 1.634 km SW of Adak, AlaskaSat, Dec 11, 7:17 AM HAST · 1751 days ago · 69 km deep · 33 km away
19. 1.668 km SW of Adak, AlaskaSat, Dec 11, 2:45 PM HAST · 1751 days ago · 36 km deep · 12 km away
20. 1.674 km SW of Adak, AlaskaSat, Dec 11, 6:47 PM HAST · 1751 days ago · 36 km deep · 8 km away
21. 2.339 km E of Adak, AlaskaSun, Dec 12, 5:23 PM HAST · 1750 days ago · 127 km deep · 95 km away
22. 2.676 km SSW of Adak, AlaskaMon, Dec 13, 7:30 AM HAST · 1749 days ago · 35 km deep · 26 km away
23. 1.839 km SSE of Adak, AlaskaMon, Dec 13, 11:01 AM HAST · 1749 days ago · 48 km deep · 63 km away
24. 4.089 km SW of Adak, AlaskaMon, Dec 13, 3:15 PM HAST · 1749 days ago · 35 km deep · 23 km away
25. 2.144 km SSE of Adak, AlaskaMon, Dec 13, 5:30 PM HAST · 1749 days ago · 33 km deep · 67 km away
26. 1.865 km SSE of Adak, AlaskaMon, Dec 13, 8:49 PM HAST · 1749 days ago · 26 km deep · 83 km away
27. 1.9133 km WSW of Adak, AlaskaMon, Dec 13, 9:00 PM HAST · 1749 days ago · 13 km deep · 70 km away
28. 1.8146 km WSW of Adak, AlaskaMon, Dec 13, 10:05 PM HAST · 1749 days ago · 24 km deep · 88 km away
29. 1.769 km SW of Adak, AlaskaWed, Dec 15, 4:15 PM HAST · 1747 days ago · 43 km deep · 8 km away
30. 1.978 km WSW of Adak, AlaskaWed, Dec 15, 11:48 PM HAST · 1747 days ago · 73 km deep · 33 km away
31. 1.764 km SSE of Adak, AlaskaThu, Dec 16, 3:46 AM HAST · 1746 days ago · 23 km deep · 78 km away
32. 1.855 km SSE of Adak, AlaskaThu, Dec 16, 4:40 AM HAST · 1746 days ago · 26 km deep · 66 km away
33. 4.029 km SSW of Adak, AlaskaThu, Dec 16, 9:48 AM HAST · 1746 days ago · 71 km deep · 39 km away
34. 2.943 km S of Adak, AlaskaFri, Dec 17, 3:52 PM HAST · 1745 days ago · 35 km deep · 47 km away
35. 2.9108 km WSW of Adak, AlaskaFri, Dec 17, 8:02 PM HAST · 1745 days ago · 48 km deep · 48 km away
36. 3.2101 km SW of Adak, AlaskaSun, Dec 19, 3:07 PM HAST · 1743 days ago · 31 km deep · 37 km away
37. 1.862 km SE of Adak, AlaskaMon, Dec 20, 2:54 AM HAST · 1742 days ago · 24 km deep · 94 km away
38. 1.7134 km WSW of Adak, AlaskaMon, Dec 20, 3:22 AM HAST · 1742 days ago · 28 km deep · 77 km away
39. 1.656 km SE of Adak, AlaskaMon, Dec 20, 3:55 AM HAST · 1742 days ago · 25 km deep · 85 km away
40. 3.4132 km WSW of Adak, AlaskaMon, Dec 20, 4:32 AM HAST · 1742 days ago · 74 km deep · 78 km away
41. 1.761 km SE of Adak, AlaskaMon, Dec 20, 7:27 AM HAST · 1742 days ago · 26 km deep · 93 km away
42. 1.679 km WSW of Adak, AlaskaMon, Dec 20, 10:34 AM HAST · 1742 days ago · 56 km deep · 29 km away
43. 1.953 km S of Adak, AlaskaMon, Dec 20, 8:31 PM HAST · 1742 days ago · 23 km deep · 55 km away
44. 1.951 km S of Adak, AlaskaTue, Dec 21, 10:51 AM HAST · 1741 days ago · 25 km deep · 58 km away
45. 1.777 km WSW of Adak, AlaskaTue, Dec 21, 3:43 PM HAST · 1741 days ago · 26 km deep · 20 km away
46. 2.746 km S of Adak, AlaskaTue, Dec 21, 9:43 PM HAST · 1741 days ago · 52 km deep · 57 km away
47. 1.646 km SSE of Adak, AlaskaWed, Dec 22, 3:48 PM HAST · 1740 days ago · 31 km deep · 69 km away
48. 2.6105 km W of Adak, AlaskaWed, Dec 22, 3:59 PM HAST · 1740 days ago · 90 km deep · 64 km away
49. 1.9128 km WSW of Adak, AlaskaWed, Dec 22, 5:26 PM HAST · 1740 days ago · 13 km deep · 78 km away
50. 1.5124 km WSW of Adak, AlaskaWed, Dec 22, 9:38 PM HAST · 1740 days ago · 24 km deep · 67 km away
51. 1.8114 km WSW of Adak, AlaskaWed, Dec 22, 10:37 PM HAST · 1740 days ago · 50 km deep · 56 km away
52. 2.116 km NNE of Adak, AlaskaWed, Dec 22, 11:27 PM HAST · 1740 days ago · 110 km deep · 81 km away
53. 2.0130 km WSW of Adak, AlaskaThu, Dec 23, 2:51 AM HAST · 1739 days ago · 59 km deep · 73 km away
54. 1.8102 km SW of Adak, AlaskaThu, Dec 23, 3:17 AM HAST · 1739 days ago · 25 km deep · 36 km away
55. 1.5126 km W of Adak, AlaskaThu, Dec 23, 4:24 PM HAST · 1739 days ago · 10 km deep · 93 km away
56. 2.020 km SSE of Adak, AlaskaFri, Dec 24, 2:11 AM HAST · 1738 days ago · 62 km deep · 60 km away
57. 2.156 km SE of Adak, AlaskaFri, Dec 24, 10:59 AM HAST · 1738 days ago · 26 km deep · 84 km away
58. 1.8134 km WSW of Adak, AlaskaSat, Dec 25, 3:45 AM HAST · 1737 days ago · 24 km deep · 74 km away
59. 1.550 km SW of Adak, AlaskaSat, Dec 25, 4:13 AM HAST · 1737 days ago · 16 km deep · 16 km away
60. 1.9101 km SW of Adak, AlaskaSat, Dec 25, 7:06 PM HAST · 1737 days ago · 29 km deep · 36 km away

The first 60 of 187.

Before

1. 2.840 km SSE of Adak, AlaskaFri, Dec 3, 1:09 AM HAST · 1760 days ago · 52 km deep · 66 km away
2. 2.1130 km SW of Adak, AlaskaThu, Dec 2, 5:16 PM HAST · 1760 days ago · 26 km deep · 66 km away
3. 1.7133 km WSW of Adak, AlaskaThu, Dec 2, 1:41 PM HAST · 1760 days ago · 7 km deep · 80 km away
4. 1.984 km SW of Adak, AlaskaThu, Dec 2, 9:43 AM HAST · 1760 days ago · 53 km deep · 21 km away
5. 1.861 km SSW of Adak, AlaskaThu, Dec 2, 1:56 AM HAST · 1761 days ago · 40 km deep · 25 km away
6. 2.260 km SSE of Adak, AlaskaThu, Dec 2, 1:31 AM HAST · 1761 days ago · 26 km deep · 63 km away
7. 2.588 km SW of Adak, AlaskaWed, Dec 1, 9:57 PM HAST · 1761 days ago · 35 km deep · 23 km away
8. 2.787 km SW of Adak, AlaskaWed, Dec 1, 9:56 PM HAST · 1761 days ago · 37 km deep · 23 km away
9. 2.131 km SE of Adak, AlaskaWed, Dec 1, 9:49 PM HAST · 1761 days ago · 81 km deep · 69 km away
10. 2.994 km SW of Adak, AlaskaWed, Dec 1, 7:55 AM HAST · 1761 days ago · 35 km deep · 30 km away
11. 1.9143 km WSW of Adak, AlaskaTue, Nov 30, 2:29 PM HAST · 1762 days ago · 7 km deep · 80 km away
12. 1.7Andreanof Islands, Aleutian Islands, AlaskaTue, Nov 30, 5:25 AM HAST · 1762 days ago · 35 km deep · 41 km away
13. 1.9115 km SW of Adak, AlaskaMon, Nov 29, 10:12 PM HAST · 1763 days ago · 21 km deep · 50 km away
14. 2.574 km SSE of Adak, AlaskaMon, Nov 29, 5:54 PM HAST · 1763 days ago · 26 km deep · 71 km away
15. 2.5113 km WSW of Adak, AlaskaMon, Nov 29, 9:54 AM HAST · 1763 days ago · 66 km deep · 53 km away
16. 3.445 km S of Adak, AlaskaMon, Nov 29, 3:06 AM HAST · 1763 days ago · 35 km deep · 48 km away
17. 2.223 km SE of Adak, AlaskaMon, Nov 29, 2:54 AM HAST · 1763 days ago · 114 km deep · 69 km away
18. 2.095 km WSW of Adak, AlaskaMon, Nov 29, 2:13 AM HAST · 1763 days ago · 13 km deep · 36 km away
19. 3.454 km SE of Adak, AlaskaSat, Nov 27, 6:47 PM HAST · 1765 days ago · 36 km deep · 85 km away
20. 2.536 km E of Adak, AlaskaSat, Nov 27, 5:40 PM HAST · 1765 days ago · 130 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021fizvy9q. Read Sun, Sep 27, 2026, 11:27 PM UTC.