M1.8 earthquake 102 km SW of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Thu, Dec 23, 2021, 3:17 AM HAST

UTC

2021-12-23 13:17:45 UTC

Depth

25.2 km (15.7 mi), shallow

Epicenter

51.224° N, 177.680° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

22

After

1. 1.5126 km W of Adak, AlaskaThu, Dec 23, 4:24 PM HAST · 1735 days ago · 10 km deep · 94 km away
2. 2.020 km SSE of Adak, AlaskaFri, Dec 24, 2:11 AM HAST · 1735 days ago · 62 km deep · 95 km away
3. 1.8134 km WSW of Adak, AlaskaSat, Dec 25, 3:45 AM HAST · 1734 days ago · 24 km deep · 51 km away
4. 1.550 km SW of Adak, AlaskaSat, Dec 25, 4:13 AM HAST · 1734 days ago · 16 km deep · 53 km away
5. 1.9101 km SW of Adak, AlaskaSat, Dec 25, 7:06 PM HAST · 1733 days ago · 29 km deep · 14 km away
6. 1.9127 km WSW of Adak, AlaskaMon, Dec 27, 10:28 AM HAST · 1732 days ago · 25 km deep · 51 km away
7. 2.074 km WSW of Adak, AlaskaMon, Dec 27, 10:43 AM HAST · 1731 days ago · 58 km deep · 35 km away
8. 1.852 km SW of Adak, AlaskaTue, Dec 28, 12:51 AM HAST · 1731 days ago · 35 km deep · 51 km away
9. 3.1155 km WSW of Adak, AlaskaWed, Dec 29, 1:28 AM HAST · 1730 days ago · 34 km deep · 68 km away
10. 1.9141 km SW of Adak, AlaskaWed, Dec 29, 3:55 AM HAST · 1730 days ago · 20 km deep · 41 km away
11. 2.777 km SSW of Adak, AlaskaFri, Dec 31, 11:45 AM HAST · 1727 days ago · 35 km deep · 46 km away
12. 2.190 km WSW of Adak, AlaskaFri, Dec 31, 1:10 PM HAST · 1727 days ago · 39 km deep · 29 km away
13. 2.3147 km S of Adak, AlaskaFri, Dec 31, 3:52 PM HAST · 1727 days ago · 26 km deep · 93 km away
14. 2.8123 km SW of Adak, AlaskaSat, Jan 1, 8:26 AM HAST · 1727 days ago · 35 km deep · 22 km away
15. 2.664 km S of Adak, AlaskaSun, Jan 2, 3:21 AM HAST · 1726 days ago · 35 km deep · 64 km away
16. 3.5134 km SW of Adak, AlaskaSun, Jan 2, 7:54 PM HAST · 1725 days ago · 33 km deep · 40 km away
17. 2.058 km SSE of Adak, AlaskaSun, Jan 2, 8:48 PM HAST · 1725 days ago · 20 km deep · 99 km away
18. 1.963 km SW of Adak, AlaskaSun, Jan 2, 11:26 PM HAST · 1725 days ago · 46 km deep · 39 km away
19. 3.7121 km WSW of Adak, AlaskaTue, Jan 4, 5:23 PM HAST · 1723 days ago · 33 km deep · 48 km away
20. 1.981 km WSW of Adak, AlaskaWed, Jan 5, 4:05 AM HAST · 1723 days ago · 27 km deep · 35 km away
21. 3.2Andreanof Islands, Aleutian Islands, AlaskaWed, Jan 5, 9:53 AM HAST · 1723 days ago · 35 km deep · 49 km away
22. 1.961 km SSW of Adak, AlaskaWed, Jan 5, 4:38 PM HAST · 1722 days ago · 47 km deep · 45 km away
23. 1.980 km WSW of Adak, AlaskaThu, Jan 6, 9:13 PM HAST · 1721 days ago · 43 km deep · 30 km away
24. 1.8128 km WSW of Adak, AlaskaFri, Jan 7, 2:10 PM HAST · 1720 days ago · 10 km deep · 61 km away
25. 2.769 km SSW of Adak, AlaskaFri, Jan 7, 5:59 PM HAST · 1720 days ago · 35 km deep · 48 km away
26. 1.5Andreanof Islands, Aleutian Islands, AlaskaFri, Jan 7, 7:19 PM HAST · 1720 days ago · 31 km deep · 97 km away
27. 1.8130 km WSW of Adak, AlaskaSat, Jan 8, 12:49 AM HAST · 1720 days ago · 32 km deep · 40 km away
28. 3.049 km SSE of Adak, AlaskaSat, Jan 8, 9:12 PM HAST · 1719 days ago · 35 km deep · 98 km away
29. 3.498 km SW of Adak, AlaskaSun, Jan 9, 10:22 AM HAST · 1719 days ago · 35 km deep · 14 km away
30. 1.946 km S of Adak, AlaskaMon, Jan 10, 4:01 PM HAST · 1717 days ago · 26 km deep · 74 km away
31. 3.024 km SSE of Adak, AlaskaWed, Jan 12, 7:35 PM HAST · 1715 days ago · 73 km deep · 95 km away
32. 2.621 km S of Adak, AlaskaThu, Jan 13, 4:26 AM HAST · 1715 days ago · 35 km deep · 88 km away
33. 2.080 km SW of Adak, AlaskaThu, Jan 13, 12:53 PM HAST · 1714 days ago · 45 km deep · 25 km away
34. 1.5130 km WSW of Adak, AlaskaThu, Jan 13, 2:39 PM HAST · 1714 days ago · 7 km deep · 74 km away
35. 1.785 km SW of Adak, AlaskaThu, Jan 13, 5:47 PM HAST · 1714 days ago · 25 km deep · 17 km away
36. 1.582 km SW of Adak, AlaskaFri, Jan 14, 4:31 AM HAST · 1714 days ago · 30 km deep · 21 km away
37. 3.0142 km WSW of Adak, AlaskaFri, Jan 14, 6:21 AM HAST · 1714 days ago · 84 km deep · 78 km away
38. 1.766 km SSW of Adak, AlaskaFri, Jan 14, 10:35 AM HAST · 1714 days ago · 34 km deep · 45 km away
39. 1.6128 km WSW of Adak, AlaskaFri, Jan 14, 3:29 PM HAST · 1713 days ago · 22 km deep · 51 km away
40. 2.230 km SSW of Adak, AlaskaFri, Jan 14, 3:40 PM HAST · 1713 days ago · 62 km deep · 76 km away
41. 1.668 km SSW of Adak, AlaskaFri, Jan 14, 5:37 PM HAST · 1713 days ago · 26 km deep · 45 km away
42. 3.2123 km SW of Adak, AlaskaSat, Jan 15, 5:19 AM HAST · 1713 days ago · 35 km deep · 31 km away
43. 2.075 km WSW of Adak, AlaskaSun, Jan 16, 4:37 AM HAST · 1712 days ago · 72 km deep · 50 km away
44. 1.988 km WSW of Adak, AlaskaSun, Jan 16, 4:39 PM HAST · 1711 days ago · 38 km deep · 32 km away
45. 1.745 km SW of Adak, AlaskaSun, Jan 16, 7:07 PM HAST · 1711 days ago · 52 km deep · 57 km away
46. 1.715 km SW of Adak, AlaskaSun, Jan 16, 8:58 PM HAST · 1711 days ago · 66 km deep · 87 km away
47. 2.3120 km W of Adak, AlaskaSun, Jan 16, 9:11 PM HAST · 1711 days ago · 106 km deep · 88 km away
48. 1.846 km SSE of Adak, AlaskaSun, Jan 16, 10:06 PM HAST · 1711 days ago · 32 km deep · 96 km away
49. 2.9131 km SW of Adak, AlaskaMon, Jan 17, 3:28 AM HAST · 1711 days ago · 28 km deep · 35 km away
50. 1.833 km S of Adak, AlaskaMon, Jan 17, 7:13 AM HAST · 1711 days ago · 46 km deep · 84 km away
51. 1.773 km WSW of Adak, AlaskaMon, Jan 17, 9:24 AM HAST · 1711 days ago · 64 km deep · 34 km away
52. 1.861 km SSW of Adak, AlaskaMon, Jan 17, 12:53 PM HAST · 1710 days ago · 46 km deep · 47 km away
53. 1.946 km S of Adak, AlaskaMon, Jan 17, 4:15 PM HAST · 1710 days ago · 42 km deep · 83 km away
54. 2.795 km SW of Adak, AlaskaTue, Jan 18, 2:48 AM HAST · 1710 days ago · 35 km deep · 12 km away
55. 1.9153 km WSW of Adak, AlaskaWed, Jan 19, 2:34 AM HAST · 1709 days ago · 38 km deep · 75 km away
56. 3.383 km WSW of Adak, AlaskaThu, Jan 20, 7:01 PM HAST · 1707 days ago · 76 km deep · 38 km away
57. 2.195 km S of Adak, AlaskaFri, Jan 21, 6:34 AM HAST · 1707 days ago · 26 km deep · 92 km away
58. 1.777 km WSW of Adak, AlaskaFri, Jan 21, 5:44 PM HAST · 1706 days ago · 32 km deep · 35 km away
59. 1.772 km SSE of Adak, AlaskaFri, Jan 21, 7:07 PM HAST · 1706 days ago · 2 km deep · 92 km away
60. 1.7111 km SW of Adak, AlaskaFri, Jan 21, 9:45 PM HAST · 1706 days ago · 21 km deep · 10 km away

The first 60 of 154.

Before

1. 2.0130 km WSW of Adak, AlaskaThu, Dec 23, 2:51 AM HAST · 1736 days ago · 59 km deep · 55 km away
2. 1.8114 km WSW of Adak, AlaskaWed, Dec 22, 10:37 PM HAST · 1736 days ago · 50 km deep · 40 km away
3. 1.5124 km WSW of Adak, AlaskaWed, Dec 22, 9:38 PM HAST · 1736 days ago · 24 km deep · 49 km away
4. 1.9128 km WSW of Adak, AlaskaWed, Dec 22, 5:26 PM HAST · 1736 days ago · 13 km deep · 68 km away
5. 2.6105 km W of Adak, AlaskaWed, Dec 22, 3:59 PM HAST · 1736 days ago · 90 km deep · 65 km away
6. 1.646 km SSE of Adak, AlaskaWed, Dec 22, 3:48 PM HAST · 1736 days ago · 31 km deep · 99 km away
7. 2.746 km S of Adak, AlaskaTue, Dec 21, 9:43 PM HAST · 1737 days ago · 52 km deep · 85 km away
8. 1.777 km WSW of Adak, AlaskaTue, Dec 21, 3:43 PM HAST · 1737 days ago · 26 km deep · 34 km away
9. 1.951 km S of Adak, AlaskaTue, Dec 21, 10:51 AM HAST · 1737 days ago · 25 km deep · 85 km away
10. 1.953 km S of Adak, AlaskaMon, Dec 20, 8:31 PM HAST · 1738 days ago · 23 km deep · 81 km away
11. 1.679 km WSW of Adak, AlaskaMon, Dec 20, 10:34 AM HAST · 1739 days ago · 56 km deep · 41 km away
12. 3.4132 km WSW of Adak, AlaskaMon, Dec 20, 4:32 AM HAST · 1739 days ago · 74 km deep · 63 km away
13. 1.7134 km WSW of Adak, AlaskaMon, Dec 20, 3:22 AM HAST · 1739 days ago · 28 km deep · 58 km away
14. 3.2101 km SW of Adak, AlaskaSun, Dec 19, 3:07 PM HAST · 1739 days ago · 31 km deep · 12 km away
15. 3.1178 km SSW of Adak, AlaskaSat, Dec 18, 2:38 AM HAST · 1741 days ago · 10 km deep · 99 km away
16. 2.9108 km WSW of Adak, AlaskaFri, Dec 17, 8:02 PM HAST · 1741 days ago · 48 km deep · 32 km away
17. 2.943 km S of Adak, AlaskaFri, Dec 17, 3:52 PM HAST · 1741 days ago · 35 km deep · 77 km away
18. 4.029 km SSW of Adak, AlaskaThu, Dec 16, 9:48 AM HAST · 1743 days ago · 71 km deep · 75 km away
19. 1.855 km SSE of Adak, AlaskaThu, Dec 16, 4:40 AM HAST · 1743 days ago · 26 km deep · 92 km away
20. 1.978 km WSW of Adak, AlaskaWed, Dec 15, 11:48 PM HAST · 1743 days ago · 73 km deep · 47 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021gemp8dw. Read Thu, Sep 24, 2026, 8:04 AM UTC.