M1.9 earthquake 222 km WSW of Adak, Alaska

Magnitude

1.9 (ml), micro

Local time

Thu, Sep 23, 2021, 12:30 AM HADT

UTC

2021-09-23 09:30:26 UTC

Depth

12.0 km (7.5 mi), shallow

Epicenter

51.479° N, 179.794° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

26

After

1. 1.6165 km WSW of Adak, AlaskaThu, Sep 23, 12:37 AM HADT · 1827 days ago · 24 km deep · 81 km away
2. 1.5208 km WSW of Adak, AlaskaThu, Sep 23, 3:47 PM HADT · 1826 days ago · 22 km deep · 39 km away
3. 5.5185 km WSW of Adak, AlaskaThu, Sep 23, 10:02 PM HADT · 1826 days ago · 18 km deep · 66 km away
4. 3.2187 km WSW of Adak, AlaskaThu, Sep 23, 10:08 PM HADT · 1826 days ago · 33 km deep · 62 km away
5. 3.4184 km WSW of Adak, AlaskaThu, Sep 23, 10:13 PM HADT · 1826 days ago · 28 km deep · 67 km away
6. 1.7Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 23, 10:14 PM HADT · 1826 days ago · 21 km deep · 64 km away
7. 1.5Rat Islands, Aleutian Islands, AlaskaFri, Sep 24, 8:16 PM GMT+12 · 1826 days ago · 57 km deep · 33 km away
8. 6.1187 km WSW of Adak, AlaskaFri, Sep 24, 2:52 AM HADT · 1826 days ago · 18 km deep · 70 km away · felt by 7 · tsunami flag
9. 2.0191 km WSW of Adak, AlaskaFri, Sep 24, 3:54 AM HADT · 1826 days ago · 10 km deep · 77 km away
10. 2.0178 km WSW of Adak, AlaskaFri, Sep 24, 9:00 AM HADT · 1826 days ago · 22 km deep · 72 km away
11. 1.6191 km WSW of Adak, AlaskaFri, Sep 24, 11:13 AM HADT · 1826 days ago · 9 km deep · 73 km away
12. 2.0189 km WSW of Adak, AlaskaFri, Sep 24, 11:15 AM HADT · 1826 days ago · 20 km deep · 70 km away
13. 1.7188 km WSW of Adak, AlaskaFri, Sep 24, 11:28 AM HADT · 1826 days ago · 21 km deep · 64 km away
14. 1.8182 km WSW of Adak, AlaskaFri, Sep 24, 11:38 AM HADT · 1826 days ago · 26 km deep · 68 km away
15. 1.6221 km WSW of Adak, AlaskaSat, Sep 25, 6:53 PM HADT · 1824 days ago · 50 km deep · 6 km away
16. 2.0211 km W of Adak, AlaskaSat, Sep 25, 11:04 PM HADT · 1824 days ago · 104 km deep · 35 km away
17. 3.1190 km WSW of Adak, AlaskaSun, Sep 26, 4:56 AM HADT · 1824 days ago · 32 km deep · 54 km away
18. 3.1179 km WSW of Adak, AlaskaSun, Sep 26, 7:20 PM HADT · 1823 days ago · 63 km deep · 48 km away
19. 1.8133 km W of Adak, AlaskaMon, Sep 27, 9:28 AM HADT · 1823 days ago · 8 km deep · 89 km away
20. 1.7Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 27, 9:28 AM HADT · 1823 days ago · 21 km deep · 80 km away
21. 2.6247 km WSW of Adak, AlaskaTue, Sep 28, 3:55 PM GMT-12 · 1821 days ago · 13 km deep · 58 km away
22. 1.8Andreanof Islands, Aleutian Islands, AlaskaTue, Sep 28, 11:23 PM HADT · 1821 days ago · 15 km deep · 40 km away
23. 2.3172 km WSW of Adak, AlaskaThu, Sep 30, 10:30 PM HADT · 1819 days ago · 21 km deep · 56 km away
24. 2.8209 km WSW of Adak, AlaskaFri, Oct 1, 12:39 AM HADT · 1819 days ago · 5 km deep · 69 km away
25. 1.8207 km WSW of Adak, AlaskaFri, Oct 1, 11:11 PM HADT · 1818 days ago · 8 km deep · 57 km away
26. 1.7144 km WSW of Adak, AlaskaSat, Oct 2, 8:43 AM HADT · 1818 days ago · 24 km deep · 93 km away
27. 1.5174 km WSW of Adak, AlaskaSat, Oct 2, 10:24 PM HADT · 1817 days ago · 8 km deep · 51 km away
28. 1.9175 km WSW of Adak, AlaskaSun, Oct 3, 2:13 AM HADT · 1817 days ago · 20 km deep · 73 km away
29. 1.9132 km WSW of Adak, AlaskaTue, Oct 5, 9:08 AM HADT · 1815 days ago · 7 km deep · 90 km away
30. 2.5134 km WSW of Adak, AlaskaTue, Oct 5, 6:49 PM HADT · 1814 days ago · 21 km deep · 88 km away
31. 3.9246 km WSW of Adak, AlaskaWed, Oct 6, 11:56 AM GMT-12 · 1813 days ago · 10 km deep · 52 km away
32. 1.8244 km W of Adak, AlaskaThu, Oct 7, 1:26 PM GMT+12 · 1813 days ago · 61 km deep · 23 km away
33. 2.5194 km WSW of Adak, AlaskaWed, Oct 6, 5:45 PM HADT · 1813 days ago · 18 km deep · 60 km away
34. 2.5Rat Islands, Aleutian Islands, AlaskaThu, Oct 7, 2:56 PM GMT+12 · 1813 days ago · 77 km deep · 96 km away
35. 2.9132 km WSW of Adak, AlaskaThu, Oct 7, 9:36 PM HADT · 1812 days ago · 10 km deep · 90 km away
36. 2.4Rat Islands, Aleutian Islands, AlaskaFri, Oct 8, 7:53 PM GMT+12 · 1812 days ago · 70 km deep · 82 km away
37. 2.8266 km W of Adak, AlaskaSat, Oct 9, 1:32 AM GMT+12 · 1812 days ago · 86 km deep · 54 km away
38. 1.7163 km WSW of Adak, AlaskaFri, Oct 8, 9:25 AM HADT · 1812 days ago · 16 km deep · 60 km away
39. 2.6128 km WSW of Adak, AlaskaSat, Oct 9, 8:09 PM HADT · 1810 days ago · 19 km deep · 98 km away
40. 2.6154 km WSW of Adak, AlaskaSat, Oct 9, 10:07 PM HADT · 1810 days ago · 21 km deep · 69 km away
41. 2.1290 km W of Adak, AlaskaMon, Oct 11, 4:45 AM GMT+12 · 1810 days ago · 28 km deep · 69 km away
42. 2.5182 km WSW of Adak, AlaskaSun, Oct 10, 2:04 PM HADT · 1809 days ago · 29 km deep · 54 km away
43. 1.9244 km WSW of Adak, AlaskaMon, Oct 11, 6:57 PM GMT+12 · 1809 days ago · 48 km deep · 22 km away
44. 3.1216 km W of Adak, AlaskaWed, Oct 13, 11:18 PM HADT · 1806 days ago · 110 km deep · 35 km away
45. 2.7157 km WSW of Adak, AlaskaThu, Oct 14, 3:24 AM HADT · 1806 days ago · 95 km deep · 65 km away
46. 3.0199 km WSW of Adak, AlaskaThu, Oct 14, 3:39 AM HADT · 1806 days ago · 10 km deep · 66 km away
47. 2.8Rat Islands, Aleutian Islands, AlaskaFri, Oct 15, 1:24 AM GMT+12 · 1806 days ago · 73 km deep · 89 km away
48. 4.0Rat Islands, Aleutian Islands, AlaskaFri, Oct 15, 6:31 AM GMT+12 · 1806 days ago · 67 km deep · 97 km away
49. 2.9139 km W of Adak, AlaskaFri, Oct 15, 9:55 AM HADT · 1805 days ago · 24 km deep · 90 km away
50. 3.2181 km WSW of Adak, AlaskaSat, Oct 16, 5:11 AM HADT · 1804 days ago · 30 km deep · 47 km away
51. 4.1194 km WSW of Adak, AlaskaSun, Oct 17, 4:08 PM HADT · 1802 days ago · 42 km deep · 59 km away
52. 3.3231 km WSW of Adak, AlaskaTue, Oct 19, 12:48 PM HADT · 1800 days ago · 6 km deep · 57 km away
53. 5.1Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 3:10 PM GMT+12 · 1797 days ago · 55 km deep · 95 km away · felt by 1
54. 1.9Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 3:25 PM GMT+12 · 1797 days ago · 21 km deep · 91 km away
55. 1.9Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 5:15 PM GMT+12 · 1797 days ago · 39 km deep · 96 km away
56. 3.2Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 5:19 PM GMT+12 · 1797 days ago · 44 km deep · 99 km away
57. 3.3Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 5:58 PM GMT+12 · 1797 days ago · 41 km deep · 98 km away
58. 1.6Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 6:21 PM GMT+12 · 1797 days ago · 2 km deep · 82 km away
59. 2.0Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 8:21 PM GMT+12 · 1797 days ago · 41 km deep · 96 km away
60. 1.8Rat Islands, Aleutian Islands, AlaskaSat, Oct 23, 10:17 PM GMT+12 · 1797 days ago · 24 km deep · 98 km away

The first 60 of 126.

Before

1. 1.8129 km WSW of Adak, AlaskaWed, Sep 22, 8:38 PM HADT · 1827 days ago · 11 km deep · 95 km away
2. 1.9129 km W of Adak, AlaskaWed, Sep 22, 5:02 PM HADT · 1827 days ago · 13 km deep · 93 km away
3. 2.7221 km WSW of Adak, AlaskaWed, Sep 22, 2:02 PM HADT · 1827 days ago · 15 km deep · 49 km away
4. 2.5219 km WSW of Adak, AlaskaWed, Sep 22, 12:43 PM HADT · 1827 days ago · 26 km deep · 55 km away
5. 2.0168 km WSW of Adak, AlaskaWed, Sep 22, 8:04 AM HADT · 1828 days ago · 26 km deep · 61 km away
6. 1.6Rat Islands, Aleutian Islands, AlaskaWed, Sep 22, 7:27 AM GMT+12 · 1829 days ago · 30 km deep · 96 km away
7. 4.0257 km WSW of Adak, AlaskaWed, Sep 22, 6:48 AM GMT+12 · 1829 days ago · 106 km deep · 35 km away
8. 1.8Rat Islands, Aleutian Islands, AlaskaWed, Sep 22, 4:16 AM GMT+12 · 1829 days ago · 56 km deep · 88 km away
9. 1.5Rat Islands, Aleutian Islands, AlaskaTue, Sep 21, 12:35 PM GMT+12 · 1829 days ago · 7 km deep · 98 km away
10. 1.9252 km W of Adak, AlaskaTue, Sep 21, 8:56 AM GMT+12 · 1830 days ago · 95 km deep · 52 km away
11. 2.8220 km WSW of Adak, AlaskaMon, Sep 20, 3:56 AM HADT · 1830 days ago · 22 km deep · 50 km away
12. 2.7201 km WSW of Adak, AlaskaSat, Sep 18, 9:41 PM HADT · 1831 days ago · 16 km deep · 60 km away
13. 2.7215 km W of Adak, AlaskaThu, Sep 16, 3:18 AM HADT · 1834 days ago · 73 km deep · 13 km away
14. 2.1136 km W of Adak, AKWed, Sep 15, 7:55 PM HADT · 1834 days ago · 17 km deep · 87 km away
15. 2.0133 km W of Adak, AlaskaWed, Sep 15, 7:55 PM HADT · 1834 days ago · 15 km deep · 89 km away
16. 2.8223 km W of Adak, AlaskaMon, Sep 13, 1:06 PM HADT · 1836 days ago · 78 km deep · 10 km away
17. 1.6194 km WSW of Adak, AlaskaMon, Sep 13, 9:09 AM HADT · 1837 days ago · 20 km deep · 38 km away
18. 1.8184 km WSW of Adak, AlaskaMon, Sep 13, 5:14 AM HADT · 1837 days ago · 22 km deep · 63 km away
19. 2.7133 km W of Adak, AlaskaSun, Sep 12, 11:47 AM HADT · 1838 days ago · 141 km deep · 97 km away
20. 1.6146 km W of Adak, AlaskaSun, Sep 12, 6:49 AM HADT · 1838 days ago · 16 km deep · 79 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak021c82hpaz. Read Thu, Sep 24, 2026, 8:59 AM UTC.