M3.7 earthquake 23 km NNW of Nikolski, Alaska

Magnitude

3.7 (mb), minor

Local time

Wed, Jun 16, 2021, 7:36 AM AKDT

UTC

2021-06-16 15:36:41 UTC

Depth

174.7 km (108.5 mi), intermediate-depth

Epicenter

53.124° N, 169.038° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 9.8 km horizontally, 8.0 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

197°, poorly surrounded by stations

Stations used

33

• Unalaska, AlaskaPopulation 4,491. Forecast185 kmWSW

After

1. 3.554 km NNE of Nikolski, AlaskaThu, Jun 17, 6:58 PM AKDT · 1927 days ago · 109 km deep · 42 km away
2. 1.742 km WSW of Nikolski, AlaskaSun, Jun 27, 6:00 PM AKDT · 1917 days ago · 18 km deep · 47 km away
3. 2.154 km SSE of Nikolski, AlaskaSun, Jun 27, 6:53 PM AKDT · 1917 days ago · 51 km deep · 79 km away
4. 2.147 km WSW of Nikolski, AlaskaMon, Jun 28, 4:06 AM AKDT · 1917 days ago · 7 km deep · 48 km away
5. 3.375 km SW of Nikolski, AlaskaThu, Jul 1, 10:04 PM AKDT · 1913 days ago · 34 km deep · 81 km away
6. 1.946 km WSW of Nikolski, AlaskaSat, Jul 3, 6:16 AM AKDT · 1912 days ago · 7 km deep · 47 km away
7. 3.863 km W of Nikolski, AlaskaSat, Jul 3, 10:41 AM AKDT · 1911 days ago · 136 km deep · 51 km away
8. 2.057 km NNW of Nikolski, AlaskaSun, Jul 4, 12:30 PM AKDT · 1910 days ago · 159 km deep · 35 km away
9. 3.088 km WSW of Nikolski, AlaskaSun, Jul 4, 3:08 PM AKDT · 1910 days ago · 144 km deep · 85 km away
10. 2.231 km SSE of Nikolski, AlaskaWed, Jul 7, 2:43 AM AKDT · 1908 days ago · 75 km deep · 55 km away
11. 2.514 km SSE of Nikolski, AlaskaThu, Jul 8, 9:47 PM AKDT · 1906 days ago · 65 km deep · 38 km away
12. 1.876 km E of Nikolski, AlaskaFri, Jul 9, 5:13 PM AKDT · 1905 days ago · 36 km deep · 90 km away
13. 2.376 km NW of Nikolski, AlaskaMon, Jul 12, 8:45 AM AKDT · 1902 days ago · 223 km deep · 53 km away
14. 4.052 km E of Nikolski, AlaskaMon, Jul 12, 6:11 PM AKDT · 1902 days ago · 45 km deep · 69 km away · felt by 1
15. 1.533 km SSE of Nikolski, AlaskaWed, Jul 14, 6:14 AM AKDT · 1901 days ago · 41 km deep · 57 km away
16. 1.847 km ESE of Nikolski, AlaskaThu, Jul 15, 1:12 AM AKDT · 1900 days ago · 32 km deep · 69 km away
17. 2.315 km S of Nikolski, AlaskaSun, Jul 18, 4:33 AM AKDT · 1897 days ago · 62 km deep · 38 km away
18. 3.451 km SW of Nikolski, AlaskaMon, Jul 19, 8:28 AM AKDT · 1895 days ago · 17 km deep · 63 km away
19. 2.1Fox Islands, Aleutian Islands, AlaskaTue, Jul 20, 6:37 AM AKDT · 1895 days ago · 25 km deep · 86 km away
20. 2.249 km ESE of Nikolski, AlaskaWed, Jul 21, 4:32 PM AKDT · 1893 days ago · 27 km deep · 71 km away
21. 2.228 km E of Nikolski, AlaskaThu, Jul 22, 11:33 PM AKDT · 1892 days ago · 92 km deep · 45 km away
22. 2.061 km ESE of Nikolski, AlaskaFri, Jul 23, 1:50 AM AKDT · 1892 days ago · 19 km deep · 83 km away
23. 1.857 km SW of Nikolski, AlaskaFri, Jul 23, 6:59 PM AKDT · 1891 days ago · 32 km deep · 66 km away
24. 2.544 km SW of Nikolski, AlaskaSat, Jul 24, 11:42 PM AKDT · 1890 days ago · 33 km deep · 55 km away
25. 1.663 km SW of Nikolski, AlaskaSun, Jul 25, 12:51 AM AKDT · 1890 days ago · 27 km deep · 75 km away
26. 2.747 km SE of Nikolski, AlaskaMon, Jul 26, 3:44 PM AKDT · 1888 days ago · 33 km deep · 70 km away
27. 4.274 km WNW of Nikolski, AlaskaWed, Jul 28, 7:33 AM AKDT · 1887 days ago · 112 km deep · 60 km away
28. 2.756 km ESE of Nikolski, AlaskaWed, Jul 28, 12:52 PM AKDT · 1886 days ago · 32 km deep · 77 km away
29. 2.051 km WSW of Nikolski, AlaskaThu, Jul 29, 5:12 PM AKDT · 1885 days ago · 13 km deep · 56 km away
30. 1.8Fox Islands, Aleutian Islands, AlaskaSat, Jul 31, 9:22 AM AKDT · 1883 days ago · 12 km deep · 87 km away
31. 2.149 km SW of Nikolski, AlaskaSun, Aug 1, 12:00 AM AKDT · 1883 days ago · 13 km deep · 57 km away
32. 2.649 km SSE of Nikolski, AlaskaTue, Aug 3, 12:56 PM AKDT · 1880 days ago · 30 km deep · 73 km away
33. 2.249 km ESE of Nikolski, AlaskaTue, Aug 3, 2:59 PM AKDT · 1880 days ago · 26 km deep · 69 km away
34. 2.775 km SW of Nikolski, AlaskaTue, Aug 3, 4:50 PM AKDT · 1880 days ago · 35 km deep · 85 km away
35. 2.2Fox Islands, Aleutian Islands, AlaskaTue, Aug 3, 5:10 PM AKDT · 1880 days ago · 20 km deep · 80 km away
36. 3.444 km SE of Nikolski, AlaskaThu, Aug 5, 5:15 AM AKDT · 1879 days ago · 41 km deep · 68 km away
37. 2.956 km SW of Nikolski, AlaskaTue, Aug 10, 2:32 PM AKDT · 1873 days ago · 34 km deep · 64 km away
38. 3.942 km WNW of Nikolski, AlaskaTue, Aug 10, 2:52 PM AKDT · 1873 days ago · 136 km deep · 31 km away
39. 2.778 km SSW of Nikolski, AlaskaWed, Aug 11, 3:02 AM AKDT · 1873 days ago · 35 km deep · 92 km away
40. 1.730 km SSE of Nikolski, AlaskaWed, Aug 11, 9:29 AM AKDT · 1872 days ago · 44 km deep · 54 km away
41. 2.093 km WSW of Nikolski, AlaskaFri, Aug 13, 2:08 PM AKDT · 1870 days ago · 3 km deep · 93 km away
42. 1.996 km WSW of Nikolski, AlaskaFri, Aug 13, 3:31 PM AKDT · 1870 days ago · 5 km deep · 99 km away
43. 3.025 km S of Nikolski, AlaskaSat, Aug 14, 2:46 AM AKDT · 1870 days ago · 36 km deep · 49 km away

Before

1. 3.244 km W of Nikolski, AlaskaTue, Jun 15, 9:01 PM AKDT · 1929 days ago · 10 km deep · 42 km away
2. 3.972 km S of Nikolski, AlaskaSun, Jun 13, 9:48 AM AKDT · 1931 days ago · 38 km deep · 95 km away
3. 3.556 km SSE of Nikolski, AlaskaSun, Jun 13, 7:02 AM AKDT · 1932 days ago · 35 km deep · 80 km away
4. 3.0111 km S of Nikolski, AlaskaWed, Jun 9, 9:14 PM AKDT · 1935 days ago · 136 km deep · 85 km away
5. 2.637 km ESE of Nikolski, AlaskaSun, May 30, 12:50 AM AKDT · 1946 days ago · 34 km deep · 59 km away
6. 2.746 km ESE of Nikolski, AlaskaThu, May 20, 1:00 AM AKDT · 1956 days ago · 24 km deep · 64 km away

From the USGS Earthquake Hazards Program and its partner networks, event us7000eezc. Read Sun, Sep 27, 2026, 3:26 AM UTC.