M1.5 earthquake 136 km WSW of Adak, Alaska

Magnitude

1.5 (ml), micro

Local time

Sat, Nov 20, 2021, 3:03 PM HAST

UTC

2021-11-21 01:03:20 UTC

Depth

-1.8 km (-1.1 mi), shallow

Epicenter

51.612° N, 178.564° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 4.8 km in depth

Magnitude uncertainty

±0.28

Depth from

From location

Station coverage gap

180°

Stations used

8

After

1. 2.6213 km WSW of Adak, AlaskaSat, Nov 20, 3:13 PM HAST · 1771 days ago · 10 km deep · 83 km away
2. 1.6130 km WSW of Adak, AlaskaSun, Nov 21, 8:30 AM HAST · 1771 days ago · 25 km deep · 25 km away
3. 1.9Andreanof Islands, Aleutian Islands, AlaskaSun, Nov 21, 12:02 PM HAST · 1770 days ago · 20 km deep · 65 km away
4. 1.7120 km SW of Adak, AlaskaSun, Nov 21, 3:37 PM HAST · 1770 days ago · 26 km deep · 52 km away
5. 2.2212 km WSW of Adak, AlaskaSun, Nov 21, 7:45 PM HAST · 1770 days ago · 69 km deep · 76 km away
6. 1.898 km WSW of Adak, AlaskaSun, Nov 21, 10:27 PM HAST · 1770 days ago · 15 km deep · 51 km away
7. 2.398 km SW of Adak, AlaskaMon, Nov 22, 7:01 PM HAST · 1769 days ago · 34 km deep · 79 km away
8. 2.2129 km SW of Adak, AlaskaMon, Nov 22, 11:17 PM HAST · 1769 days ago · 19 km deep · 58 km away
9. 2.3216 km WSW of Adak, AlaskaTue, Nov 23, 8:26 PM HAST · 1768 days ago · 13 km deep · 85 km away
10. 1.9142 km WSW of Adak, AlaskaWed, Nov 24, 2:22 AM HAST · 1768 days ago · 26 km deep · 39 km away
11. 2.8221 km WSW of Adak, AlaskaWed, Nov 24, 5:39 AM HAST · 1768 days ago · 26 km deep · 90 km away
12. 2.0109 km W of Adak, AlaskaWed, Nov 24, 5:01 PM HAST · 1767 days ago · 37 km deep · 33 km away
13. 2.0142 km WSW of Adak, AlaskaWed, Nov 24, 5:55 PM HAST · 1767 days ago · 2 km deep · 16 km away
14. 2.9114 km WSW of Adak, AlaskaWed, Nov 24, 6:18 PM HAST · 1767 days ago · 15 km deep · 38 km away
15. 1.9146 km WSW of Adak, AlaskaThu, Nov 25, 4:59 AM HAST · 1767 days ago · 24 km deep · 29 km away
16. 1.9137 km WSW of Adak, AlaskaThu, Nov 25, 6:19 AM HAST · 1767 days ago · 45 km deep · 13 km away
17. 2.8147 km WSW of Adak, AlaskaThu, Nov 25, 9:39 AM HAST · 1767 days ago · 31 km deep · 44 km away
18. 2.880 km SW of Adak, AlaskaThu, Nov 25, 10:38 AM HAST · 1767 days ago · 42 km deep · 79 km away
19. 1.8136 km SW of Adak, AlaskaThu, Nov 25, 10:07 PM HAST · 1766 days ago · 41 km deep · 59 km away
20. 3.0197 km WSW of Adak, AlaskaThu, Nov 25, 11:49 PM HAST · 1766 days ago · 35 km deep · 71 km away
21. 1.7138 km WSW of Adak, AlaskaFri, Nov 26, 4:32 AM HAST · 1766 days ago · 23 km deep · 44 km away
22. 1.9187 km WSW of Adak, AlaskaFri, Nov 26, 7:17 AM HAST · 1766 days ago · 24 km deep · 53 km away
23. 2.1212 km WSW of Adak, AlaskaFri, Nov 26, 9:48 AM HAST · 1766 days ago · 9 km deep · 77 km away
24. 1.6132 km W of Adak, AlaskaFri, Nov 26, 3:29 PM HAST · 1765 days ago · 13 km deep · 10 km away
25. 2.1163 km WSW of Adak, AlaskaFri, Nov 26, 9:22 PM HAST · 1765 days ago · 26 km deep · 31 km away
26. 3.7200 km WSW of Adak, AlaskaSat, Nov 27, 9:23 PM HAST · 1764 days ago · 22 km deep · 74 km away
27. 2.6188 km W of Adak, AlaskaSun, Nov 28, 4:55 PM HAST · 1763 days ago · 96 km deep · 54 km away
28. 2.095 km WSW of Adak, AlaskaMon, Nov 29, 2:13 AM HAST · 1763 days ago · 13 km deep · 53 km away
29. 2.5113 km WSW of Adak, AlaskaMon, Nov 29, 9:54 AM HAST · 1763 days ago · 66 km deep · 39 km away
30. 2.3184 km WSW of Adak, AlaskaMon, Nov 29, 6:37 PM HAST · 1762 days ago · 23 km deep · 52 km away
31. 1.9115 km SW of Adak, AlaskaMon, Nov 29, 10:12 PM HAST · 1762 days ago · 21 km deep · 63 km away
32. 1.9143 km WSW of Adak, AlaskaTue, Nov 30, 2:29 PM HAST · 1761 days ago · 7 km deep · 50 km away
33. 2.994 km SW of Adak, AlaskaWed, Dec 1, 7:55 AM HAST · 1761 days ago · 35 km deep · 87 km away
34. 1.8Andreanof Islands, Aleutian Islands, AlaskaWed, Dec 1, 3:06 PM HAST · 1760 days ago · 13 km deep · 60 km away
35. 2.787 km SW of Adak, AlaskaWed, Dec 1, 9:56 PM HAST · 1760 days ago · 37 km deep · 69 km away
36. 2.588 km SW of Adak, AlaskaWed, Dec 1, 9:57 PM HAST · 1760 days ago · 35 km deep · 69 km away
37. 1.984 km SW of Adak, AlaskaThu, Dec 2, 9:43 AM HAST · 1760 days ago · 53 km deep · 67 km away
38. 1.7133 km WSW of Adak, AlaskaThu, Dec 2, 1:41 PM HAST · 1759 days ago · 7 km deep · 12 km away
39. 2.1130 km SW of Adak, AlaskaThu, Dec 2, 5:16 PM HAST · 1759 days ago · 26 km deep · 90 km away
40. 1.666 km SW of Adak, AlaskaFri, Dec 3, 2:40 PM HAST · 1758 days ago · 40 km deep · 87 km away
41. 2.0136 km WSW of Adak, AlaskaSat, Dec 4, 1:28 PM HAST · 1757 days ago · 20 km deep · 41 km away
42. 2.868 km WSW of Adak, AlaskaSat, Dec 4, 3:45 PM HAST · 1757 days ago · 35 km deep · 73 km away
43. 2.8192 km WSW of Adak, AlaskaSun, Dec 5, 2:03 AM HAST · 1757 days ago · 65 km deep · 56 km away
44. 2.0132 km W of Adak, AlaskaSun, Dec 5, 11:15 PM HAST · 1756 days ago · 15 km deep · 11 km away
45. 1.887 km WSW of Adak, AlaskaMon, Dec 6, 9:24 PM HAST · 1755 days ago · 36 km deep · 58 km away
46. 2.7144 km WSW of Adak, AlaskaTue, Dec 7, 9:33 AM HAST · 1755 days ago · 11 km deep · 33 km away
47. 1.7143 km W of Adak, AlaskaTue, Dec 7, 12:36 PM HAST · 1754 days ago · 8 km deep · 11 km away
48. 2.076 km SW of Adak, AlaskaWed, Dec 8, 5:08 AM HAST · 1754 days ago · 31 km deep · 73 km away
49. 2.8143 km WSW of Adak, AlaskaWed, Dec 8, 6:31 PM HAST · 1753 days ago · 32 km deep · 40 km away
50. 1.592 km SW of Adak, AlaskaSat, Dec 11, 5:27 AM HAST · 1751 days ago · 32 km deep · 76 km away
51. 1.668 km SW of Adak, AlaskaSat, Dec 11, 2:45 PM HAST · 1750 days ago · 36 km deep · 96 km away
52. 1.674 km SW of Adak, AlaskaSat, Dec 11, 6:47 PM HAST · 1750 days ago · 36 km deep · 81 km away
53. 2.7230 km W of Adak, AlaskaSat, Dec 11, 7:00 PM HAST · 1750 days ago · 99 km deep · 98 km away
54. 4.089 km SW of Adak, AlaskaMon, Dec 13, 3:15 PM HAST · 1748 days ago · 35 km deep · 75 km away
55. 1.9133 km WSW of Adak, AlaskaMon, Dec 13, 9:00 PM HAST · 1748 days ago · 13 km deep · 48 km away
56. 1.8146 km WSW of Adak, AlaskaMon, Dec 13, 10:05 PM HAST · 1748 days ago · 24 km deep · 26 km away
57. 1.769 km SW of Adak, AlaskaWed, Dec 15, 4:15 PM HAST · 1746 days ago · 43 km deep · 79 km away
58. 1.978 km WSW of Adak, AlaskaWed, Dec 15, 11:48 PM HAST · 1746 days ago · 73 km deep · 59 km away
59. 2.9108 km WSW of Adak, AlaskaFri, Dec 17, 8:02 PM HAST · 1744 days ago · 48 km deep · 44 km away
60. 3.2101 km SW of Adak, AlaskaSun, Dec 19, 3:07 PM HAST · 1742 days ago · 31 km deep · 87 km away

The first 60 of 135.

Before

1. 2.156 km W of Adak, AlaskaSat, Nov 20, 9:34 AM HAST · 1772 days ago · 101 km deep · 79 km away
2. 1.9143 km WSW of Adak, AlaskaSat, Nov 20, 8:56 AM HAST · 1772 days ago · 23 km deep · 16 km away
3. 1.888 km WSW of Adak, AlaskaFri, Nov 19, 11:58 PM HAST · 1772 days ago · 14 km deep · 58 km away
4. 2.2204 km WSW of Adak, AlaskaFri, Nov 19, 11:31 AM HAST · 1773 days ago · 44 km deep · 70 km away
5. 1.8211 km W of Adak, AlaskaFri, Nov 19, 1:39 AM HAST · 1773 days ago · 72 km deep · 77 km away
6. 1.7126 km SW of Adak, AlaskaThu, Nov 18, 3:15 PM HAST · 1773 days ago · 51 km deep · 49 km away
7. 1.8180 km WSW of Adak, AlaskaThu, Nov 18, 2:09 PM HAST · 1773 days ago · 26 km deep · 54 km away
8. 1.6129 km WSW of Adak, AlaskaThu, Nov 18, 11:00 AM HAST · 1774 days ago · 25 km deep · 43 km away
9. 1.7126 km WSW of Adak, AlaskaThu, Nov 18, 9:43 AM HAST · 1774 days ago · 13 km deep · 37 km away
10. 2.8112 km WSW of Adak, AlaskaThu, Nov 18, 7:21 AM HAST · 1774 days ago · 22 km deep · 42 km away
11. 5.0128 km WSW of Adak, AlaskaWed, Nov 17, 11:50 PM HAST · 1774 days ago · 48 km deep · 32 km away · felt by 1
12. 1.9149 km WSW of Adak, AlaskaWed, Nov 17, 11:47 PM HAST · 1774 days ago · 24 km deep · 34 km away
13. 2.0173 km WSW of Adak, AlaskaWed, Nov 17, 11:18 PM HAST · 1774 days ago · 23 km deep · 52 km away
14. 1.8139 km SW of Adak, AlaskaWed, Nov 17, 7:19 PM HAST · 1774 days ago · 22 km deep · 50 km away
15. 1.7143 km SW of Adak, AlaskaWed, Nov 17, 4:07 PM HAST · 1774 days ago · 26 km deep · 54 km away
16. 1.5116 km WSW of Adak, AlaskaWed, Nov 17, 2:47 PM HAST · 1774 days ago · 28 km deep · 34 km away
17. 1.6132 km WSW of Adak, AlaskaWed, Nov 17, 1:20 PM HAST · 1774 days ago · 23 km deep · 40 km away
18. 1.571 km SW of Adak, AlaskaTue, Nov 16, 10:24 PM HAST · 1775 days ago · 38 km deep · 75 km away
19. 1.7143 km WSW of Adak, AlaskaMon, Nov 15, 7:53 PM HAST · 1776 days ago · 24 km deep · 43 km away
20. 2.1226 km WSW of Adak, AlaskaMon, Nov 15, 5:15 PM HAST · 1776 days ago · 13 km deep · 97 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91424881. Read Sun, Sep 27, 2026, 9:27 AM UTC.