M1.6 earthquake 165 km WSW of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Thu, Sep 23, 2021, 12:37 AM HADT

UTC

2021-09-23 09:37:38 UTC

Depth

24.0 km (14.9 mi), shallow

Epicenter

51.176° N, 178.735° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

17

After

1. 1.788 km WSW of Adak, AlaskaThu, Sep 23, 4:09 AM HADT · 1827 days ago · 60 km deep · 77 km away
2. 2.0133 km W of Adak, AlaskaThu, Sep 23, 2:46 PM HADT · 1826 days ago · 132 km deep · 94 km away
3. 3.1121 km WSW of Adak, AlaskaThu, Sep 23, 3:00 PM HADT · 1826 days ago · 78 km deep · 58 km away
4. 1.5208 km WSW of Adak, AlaskaThu, Sep 23, 3:47 PM HADT · 1826 days ago · 22 km deep · 50 km away
5. 5.5185 km WSW of Adak, AlaskaThu, Sep 23, 10:02 PM HADT · 1826 days ago · 18 km deep · 21 km away
6. 3.2187 km WSW of Adak, AlaskaThu, Sep 23, 10:08 PM HADT · 1826 days ago · 33 km deep · 24 km away
7. 3.4184 km WSW of Adak, AlaskaThu, Sep 23, 10:13 PM HADT · 1826 days ago · 28 km deep · 20 km away
8. 1.7Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 23, 10:14 PM HADT · 1826 days ago · 21 km deep · 21 km away
9. 1.692 km WSW of Adak, AlaskaFri, Sep 24, 1:02 AM HADT · 1826 days ago · 13 km deep · 73 km away
10. 6.1187 km WSW of Adak, AlaskaFri, Sep 24, 2:52 AM HADT · 1826 days ago · 18 km deep · 22 km away · felt by 7 · tsunami flag
11. 2.0191 km WSW of Adak, AlaskaFri, Sep 24, 3:54 AM HADT · 1826 days ago · 10 km deep · 28 km away
12. 2.0178 km WSW of Adak, AlaskaFri, Sep 24, 9:00 AM HADT · 1826 days ago · 22 km deep · 14 km away
13. 1.6191 km WSW of Adak, AlaskaFri, Sep 24, 11:13 AM HADT · 1826 days ago · 9 km deep · 27 km away
14. 2.0189 km WSW of Adak, AlaskaFri, Sep 24, 11:15 AM HADT · 1826 days ago · 20 km deep · 24 km away
15. 1.7188 km WSW of Adak, AlaskaFri, Sep 24, 11:28 AM HADT · 1826 days ago · 21 km deep · 24 km away
16. 1.8182 km WSW of Adak, AlaskaFri, Sep 24, 11:38 AM HADT · 1826 days ago · 26 km deep · 18 km away
17. 2.1110 km SW of Adak, AlaskaSat, Sep 25, 5:21 PM HADT · 1824 days ago · 26 km deep · 65 km away
18. 1.6221 km WSW of Adak, AlaskaSat, Sep 25, 6:53 PM HADT · 1824 days ago · 50 km deep · 76 km away
19. 2.0211 km W of Adak, AlaskaSat, Sep 25, 11:04 PM HADT · 1824 days ago · 104 km deep · 95 km away
20. 3.1190 km WSW of Adak, AlaskaSun, Sep 26, 4:56 AM HADT · 1824 days ago · 32 km deep · 29 km away
21. 3.1179 km WSW of Adak, AlaskaSun, Sep 26, 7:20 PM HADT · 1823 days ago · 63 km deep · 37 km away
22. 1.8133 km W of Adak, AlaskaMon, Sep 27, 9:28 AM HADT · 1823 days ago · 8 km deep · 59 km away
23. 1.7Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 27, 9:28 AM HADT · 1823 days ago · 21 km deep · 55 km away
24. 3.9177 km SSW of Adak, AlaskaMon, Sep 27, 1:03 PM HADT · 1823 days ago · 10 km deep · 90 km away
25. 2.6247 km WSW of Adak, AlaskaTue, Sep 28, 3:55 PM GMT-12 · 1821 days ago · 13 km deep · 83 km away
26. 1.8Andreanof Islands, Aleutian Islands, AlaskaTue, Sep 28, 11:23 PM HADT · 1821 days ago · 15 km deep · 52 km away
27. 2.3179 km SSW of Adak, AlaskaWed, Sep 29, 12:04 AM HADT · 1821 days ago · 25 km deep · 92 km away
28. 3.1135 km WSW of Adak, AlaskaWed, Sep 29, 12:55 AM HADT · 1821 days ago · 30 km deep · 33 km away
29. 2.1102 km WSW of Adak, AlaskaThu, Sep 30, 2:54 AM HADT · 1820 days ago · 8 km deep · 66 km away
30. 2.3172 km WSW of Adak, AlaskaThu, Sep 30, 10:30 PM HADT · 1819 days ago · 21 km deep · 30 km away
31. 2.8209 km WSW of Adak, AlaskaFri, Oct 1, 12:39 AM HADT · 1819 days ago · 5 km deep · 44 km away
32. 1.8207 km WSW of Adak, AlaskaFri, Oct 1, 11:11 PM HADT · 1818 days ago · 8 km deep · 43 km away
33. 1.7144 km WSW of Adak, AlaskaSat, Oct 2, 8:43 AM HADT · 1818 days ago · 24 km deep · 20 km away
34. 2.7116 km WSW of Adak, AlaskaSat, Oct 2, 10:35 AM HADT · 1818 days ago · 13 km deep · 51 km away
35. 3.9116 km WSW of Adak, AlaskaSat, Oct 2, 4:45 PM HADT · 1817 days ago · 35 km deep · 50 km away
36. 1.5174 km WSW of Adak, AlaskaSat, Oct 2, 10:24 PM HADT · 1817 days ago · 8 km deep · 38 km away
37. 1.9175 km WSW of Adak, AlaskaSun, Oct 3, 2:13 AM HADT · 1817 days ago · 20 km deep · 11 km away
38. 1.8133 km SW of Adak, AlaskaSun, Oct 3, 12:33 PM HADT · 1817 days ago · 25 km deep · 35 km away
39. 3.1140 km SW of Adak, AlaskaTue, Oct 5, 5:42 AM HADT · 1815 days ago · 28 km deep · 35 km away
40. 1.9132 km WSW of Adak, AlaskaTue, Oct 5, 9:08 AM HADT · 1815 days ago · 7 km deep · 51 km away
41. 2.3130 km SW of Adak, AlaskaTue, Oct 5, 12:57 PM HADT · 1815 days ago · 28 km deep · 49 km away
42. 2.5134 km WSW of Adak, AlaskaTue, Oct 5, 6:49 PM HADT · 1814 days ago · 21 km deep · 50 km away
43. 3.9246 km WSW of Adak, AlaskaWed, Oct 6, 11:56 AM GMT-12 · 1813 days ago · 10 km deep · 83 km away
44. 2.5194 km WSW of Adak, AlaskaWed, Oct 6, 5:45 PM HADT · 1813 days ago · 18 km deep · 30 km away
45. 1.8112 km SW of Adak, AlaskaWed, Oct 6, 8:53 PM HADT · 1813 days ago · 18 km deep · 78 km away
46. 1.6111 km SW of Adak, AlaskaWed, Oct 6, 8:56 PM HADT · 1813 days ago · 26 km deep · 74 km away
47. 1.6106 km SW of Adak, AlaskaWed, Oct 6, 9:54 PM HADT · 1813 days ago · 23 km deep · 65 km away
48. 1.6111 km SW of Adak, AlaskaWed, Oct 6, 10:02 PM HADT · 1813 days ago · 15 km deep · 70 km away
49. 1.8121 km SW of Adak, AlaskaWed, Oct 6, 11:19 PM HADT · 1813 days ago · 21 km deep · 51 km away
50. 2.5105 km WSW of Adak, AlaskaThu, Oct 7, 2:25 AM HADT · 1813 days ago · 48 km deep · 59 km away
51. 2.9132 km WSW of Adak, AlaskaThu, Oct 7, 9:36 PM HADT · 1812 days ago · 10 km deep · 50 km away
52. 1.981 km WSW of Adak, AlaskaThu, Oct 7, 10:05 PM HADT · 1812 days ago · 30 km deep · 83 km away
53. 3.270 km SW of Adak, AlaskaFri, Oct 8, 7:10 AM HADT · 1812 days ago · 49 km deep · 98 km away
54. 1.7163 km WSW of Adak, AlaskaFri, Oct 8, 9:25 AM HADT · 1812 days ago · 16 km deep · 45 km away
55. 2.6128 km WSW of Adak, AlaskaSat, Oct 9, 8:09 PM HADT · 1810 days ago · 19 km deep · 43 km away
56. 2.6154 km WSW of Adak, AlaskaSat, Oct 9, 10:07 PM HADT · 1810 days ago · 21 km deep · 38 km away
57. 1.782 km W of Adak, AlaskaSun, Oct 10, 7:57 AM HADT · 1810 days ago · 10 km deep · 98 km away
58. 2.5182 km WSW of Adak, AlaskaSun, Oct 10, 2:04 PM HADT · 1809 days ago · 29 km deep · 27 km away
59. 3.0116 km WSW of Adak, AlaskaSun, Oct 10, 4:26 PM HADT · 1809 days ago · 34 km deep · 49 km away
60. 1.9244 km WSW of Adak, AlaskaMon, Oct 11, 6:57 PM GMT+12 · 1809 days ago · 48 km deep · 97 km away

The first 60 of 147.

Before

1. 1.9222 km WSW of Adak, AlaskaThu, Sep 23, 12:30 AM HADT · 1827 days ago · 12 km deep · 81 km away
2. 1.8129 km WSW of Adak, AlaskaWed, Sep 22, 8:38 PM HADT · 1827 days ago · 11 km deep · 47 km away
3. 1.9129 km W of Adak, AlaskaWed, Sep 22, 5:02 PM HADT · 1827 days ago · 13 km deep · 60 km away
4. 2.7221 km WSW of Adak, AlaskaWed, Sep 22, 2:02 PM HADT · 1827 days ago · 15 km deep · 58 km away
5. 2.5219 km WSW of Adak, AlaskaWed, Sep 22, 12:43 PM HADT · 1828 days ago · 26 km deep · 55 km away
6. 1.896 km SW of Adak, AlaskaWed, Sep 22, 10:24 AM HADT · 1828 days ago · 33 km deep · 70 km away
7. 2.0168 km WSW of Adak, AlaskaWed, Sep 22, 8:04 AM HADT · 1828 days ago · 26 km deep · 26 km away
8. 1.872 km WSW of Adak, AlaskaTue, Sep 21, 3:44 AM HADT · 1829 days ago · 14 km deep · 93 km away
9. 1.9100 km WSW of Adak, AlaskaMon, Sep 20, 5:19 PM HADT · 1829 days ago · 58 km deep · 65 km away
10. 2.1135 km W of Adak, AlaskaMon, Sep 20, 7:27 AM HADT · 1830 days ago · 133 km deep · 95 km away
11. 2.8220 km WSW of Adak, AlaskaMon, Sep 20, 3:56 AM HADT · 1830 days ago · 22 km deep · 56 km away
12. 1.6124 km WSW of Adak, AlaskaMon, Sep 20, 3:25 AM HADT · 1830 days ago · 15 km deep · 42 km away
13. 1.688 km SW of Adak, AlaskaMon, Sep 20, 2:38 AM HADT · 1830 days ago · 37 km deep · 80 km away
14. 1.5114 km WSW of Adak, AlaskaSun, Sep 19, 11:41 AM HADT · 1831 days ago · 14 km deep · 53 km away
15. 2.0114 km WSW of Adak, AlaskaSun, Sep 19, 8:47 AM HADT · 1831 days ago · 48 km deep · 51 km away
16. 2.7201 km WSW of Adak, AlaskaSat, Sep 18, 9:41 PM HADT · 1831 days ago · 16 km deep · 37 km away
17. 2.068 km SW of Adak, AlaskaFri, Sep 17, 12:31 AM HADT · 1833 days ago · 35 km deep · 97 km away
18. 2.7215 km W of Adak, AlaskaThu, Sep 16, 3:18 AM HADT · 1834 days ago · 73 km deep · 82 km away
19. 2.1136 km W of Adak, AKWed, Sep 15, 7:55 PM HADT · 1834 days ago · 17 km deep · 60 km away
20. 2.0133 km W of Adak, AlaskaWed, Sep 15, 7:55 PM HADT · 1834 days ago · 15 km deep · 60 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021c82j8af. Read Thu, Sep 24, 2026, 9:38 AM UTC.