Alaska earthquakes

M3.9 earthquake 72 km S of Nikolski, Alaska

A magnitude 3.9 earthquake struck 72 km S of Nikolski, Alaska on Sun, Jun 13, 2021, 9:48 AM AKDT (17:48 UTC), 38 km (23 mi) below the surface.

A larger quake followed: M4.0 52 km E of Nikolski, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.9 (mb), minor
Local time
UTC
2021-06-13 17:48:13 UTC
Depth
37.7 km (23.4 mi), shallow
Epicenter
52.303° N, 168.662° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.2 km horizontally, 9.4 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
140°
Stations used
39

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 45 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 3.244 km W of Nikolski, Alaska · 1926 days ago · 10 km deep · 85 km away
  2. 3.723 km NNW of Nikolski, Alaska · 1926 days ago · 175 km deep · 95 km away
  3. 1.742 km WSW of Nikolski, Alaska · 1914 days ago · 18 km deep · 74 km away
  4. 2.154 km SSE of Nikolski, Alaska · 1914 days ago · 51 km deep · 25 km away
  5. 2.147 km WSW of Nikolski, Alaska · 1914 days ago · 7 km deep · 81 km away
  6. 2.094 km SSW of Nikolski, Alaska · 1914 days ago · 49 km deep · 45 km away
  7. 3.375 km SW of Nikolski, Alaska · 1910 days ago · 34 km deep · 78 km away
  8. 1.946 km WSW of Nikolski, Alaska · 1909 days ago · 7 km deep · 82 km away
  9. 2.231 km SSE of Nikolski, Alaska · 1905 days ago · 75 km deep · 42 km away
  10. 2.514 km SSE of Nikolski, Alaska · 1903 days ago · 65 km deep · 58 km away
  11. 1.876 km E of Nikolski, Alaska · 1902 days ago · 36 km deep · 95 km away
  12. 4.052 km E of Nikolski, Alaska · 1899 days ago · 45 km deep · 76 km away · felt by 1
  13. 3.8106 km SW of Nikolski, Alaska · 1899 days ago · 44 km deep · 89 km away
  14. 2.8112 km SSW of Nikolski, Alaska · 1898 days ago · 35 km deep · 77 km away
  15. 1.533 km SSE of Nikolski, Alaska · 1898 days ago · 41 km deep · 43 km away
  16. 2.8114 km SW of Nikolski, Alaska · 1897 days ago · 26 km deep · 92 km away
  17. 1.847 km ESE of Nikolski, Alaska · 1897 days ago · 32 km deep · 56 km away
  18. 2.315 km S of Nikolski, Alaska · 1894 days ago · 62 km deep · 57 km away
  19. 3.451 km SW of Nikolski, Alaska · 1893 days ago · 17 km deep · 60 km away
  20. 2.1Fox Islands, Aleutian Islands, Alaska · 1892 days ago · 25 km deep · 68 km away
  21. 2.249 km ESE of Nikolski, Alaska · 1890 days ago · 27 km deep · 54 km away
  22. 2.228 km E of Nikolski, Alaska · 1889 days ago · 92 km deep · 72 km away
  23. 2.061 km ESE of Nikolski, Alaska · 1889 days ago · 19 km deep · 54 km away
  24. 3.8123 km SSW of Nikolski, Alaska · 1889 days ago · 10 km deep · 70 km away
  25. 1.857 km SW of Nikolski, Alaska · 1888 days ago · 32 km deep · 67 km away
  26. 2.544 km SW of Nikolski, Alaska · 1887 days ago · 33 km deep · 61 km away
  27. 1.663 km SW of Nikolski, Alaska · 1887 days ago · 27 km deep · 58 km away
  28. 2.1102 km SSW of Nikolski, Alaska · 1887 days ago · 36 km deep · 55 km away
  29. 2.384 km SSE of Nikolski, Alaska · 1886 days ago · 38 km deep · 16 km away
  30. 2.747 km SE of Nikolski, Alaska · 1886 days ago · 33 km deep · 47 km away
  31. 2.756 km ESE of Nikolski, Alaska · 1884 days ago · 32 km deep · 58 km away
  32. 2.051 km WSW of Nikolski, Alaska · 1882 days ago · 13 km deep · 74 km away
  33. 1.8Fox Islands, Aleutian Islands, Alaska · 1881 days ago · 12 km deep · 13 km away
  34. 2.149 km SW of Nikolski, Alaska · 1880 days ago · 13 km deep · 68 km away
  35. 2.8130 km SSW of Nikolski, Alaska · 1880 days ago · 28 km deep · 77 km away
  36. 2.649 km SSE of Nikolski, Alaska · 1878 days ago · 30 km deep · 25 km away
  37. 2.249 km ESE of Nikolski, Alaska · 1878 days ago · 26 km deep · 64 km away
  38. 2.775 km SW of Nikolski, Alaska · 1877 days ago · 35 km deep · 69 km away
  39. 2.2Fox Islands, Aleutian Islands, Alaska · 1877 days ago · 20 km deep · 63 km away
  40. 3.444 km SE of Nikolski, Alaska · 1876 days ago · 41 km deep · 41 km away
  41. 2.956 km SW of Nikolski, Alaska · 1871 days ago · 34 km deep · 69 km away
  42. 3.942 km WNW of Nikolski, Alaska · 1871 days ago · 136 km deep · 97 km away
  43. 2.778 km SSW of Nikolski, Alaska · 1870 days ago · 35 km deep · 57 km away
  44. 1.730 km SSE of Nikolski, Alaska · 1870 days ago · 44 km deep · 44 km away
  45. 1.585 km ESE of Nikolski, Alaska · 1869 days ago · 26 km deep · 86 km away

Before

  1. 3.556 km SSE of Nikolski, Alaska · 1929 days ago · 35 km deep · 21 km away
  2. 3.3153 km SSW of Nikolski, Alaska · 1932 days ago · 10 km deep · 94 km away
  3. 2.637 km ESE of Nikolski, Alaska · 1943 days ago · 34 km deep · 56 km away
  4. 2.6140 km SSE of Nikolski, Alaska · 1944 days ago · 10 km deep · 69 km away
  5. 3.6115 km SW of Nikolski, Alaska · 1944 days ago · 22 km deep · 97 km away
  6. 3.8100 km SSW of Nikolski, Alaska · 1944 days ago · 34 km deep · 59 km away
  7. 2.746 km ESE of Nikolski, Alaska · 1953 days ago · 24 km deep · 69 km away
  8. 2.955 km SE of Nikolski, Alaska · 1959 days ago · 35 km deep · 42 km away
  9. 2.240 km ESE of Nikolski, Alaska · 1959 days ago · 30 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ecrl. Read Thu, Sep 24, 2026, 11:24 AM UTC.