Alaska earthquakes

M1.5 earthquake 78 km SW of Unalaska, Alaska

A magnitude 1.5 earthquake struck 78 km SW of Unalaska, Alaska on Thu, Sep 9, 2021, 8:40 AM AKDT (16:40 UTC), 31 km (19 mi) below the surface.

A larger quake followed: M1.8 102 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
1.5 (ml), micro
Local time
UTC
2021-09-09 16:40:37 UTC
Depth
30.8 km (19.1 mi), shallow
Epicenter
53.426° N, 167.453° 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.

Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 87 in the 60 days after this one and 37 in the 30 days before it.

After

  1. 1.8102 km E of Nikolski, Alaska · 1840 days ago · 25 km deep · 59 km away
  2. 1.620 km WSW of Dutch Harbor, Alaska · 1833 days ago · 7 km deep · 62 km away
  3. 1.521 km WSW of Dutch Harbor, Alaska · 1833 days ago · 7 km deep · 61 km away
  4. 1.621 km WSW of Dutch Harbor, Alaska · 1833 days ago · 7 km deep · 62 km away
  5. 1.720 km WSW of Dutch Harbor, Alaska · 1833 days ago · 6 km deep · 61 km away
  6. 1.652 km SE of Unalaska, Alaska · 1833 days ago · 25 km deep · 93 km away
  7. 1.651 km SW of Unalaska, Alaska · 1832 days ago · 15 km deep · 27 km away
  8. 1.981 km SSE of Unalaska, Alaska · 1832 days ago · 25 km deep · 99 km away
  9. 2.652 km ESE of Nikolski, Alaska · 1828 days ago · 34 km deep · 91 km away
  10. 3.457 km SSE of Unalaska, Alaska · 1828 days ago · 43 km deep · 92 km away
  11. 2.098 km E of Nikolski, Alaska · 1827 days ago · 26 km deep · 60 km away
  12. 2.684 km S of Unalaska, Alaska · 1826 days ago · 35 km deep · 57 km away
  13. 4.439 km ESE of Nikolski, Alaska · 1826 days ago · 39 km deep · 97 km away
  14. 1.944 km ESE of Nikolski, Alaska · 1826 days ago · 39 km deep · 97 km away
  15. 1.846 km SE of Nikolski, Alaska · 1826 days ago · 22 km deep · 98 km away
  16. 1.818 km WSW of Dutch Harbor, Alaska · 1826 days ago · 7 km deep · 63 km away
  17. 1.820 km WSW of Dutch Harbor, Alaska · 1826 days ago · 5 km deep · 61 km away
  18. 1.720 km WSW of Dutch Harbor, Alaska · 1826 days ago · 5 km deep · 61 km away
  19. 1.6Fox Islands, Aleutian Islands, Alaska · 1823 days ago · 23 km deep · 29 km away
  20. 3.2109 km SSW of Unalaska, Alaska · 1823 days ago · 29 km deep · 69 km away
  21. 2.156 km SW of Unalaska, Alaska · 1822 days ago · 89 km deep · 22 km away
  22. 3.085 km SSW of Unalaska, Alaska · 1822 days ago · 35 km deep · 53 km away
  23. 1.9107 km E of Nikolski, Alaska · 1820 days ago · 14 km deep · 57 km away
  24. 2.054 km SSW of Unalaska, Alaska · 1816 days ago · 71 km deep · 34 km away
  25. 2.984 km E of Nikolski, Alaska · 1814 days ago · 35 km deep · 69 km away
  26. 1.781 km SSE of Unalaska, Alaska · 1813 days ago · 26 km deep · 97 km away
  27. 1.8105 km ESE of Nikolski, Alaska · 1813 days ago · 17 km deep · 95 km away
  28. 4.177 km SSW of Unalaska, Alaska · 1811 days ago · 44 km deep · 46 km away
  29. 2.088 km S of Unalaska, Alaska · 1809 days ago · 41 km deep · 58 km away
  30. 3.1106 km W of Dutch Harbor, Alaska · 1808 days ago · 14 km deep · 78 km away
  31. 3.091 km SW of Unalaska, Alaska · 1808 days ago · 35 km deep · 20 km away
  32. 2.150 km ENE of Nikolski, Alaska · 1808 days ago · 65 km deep · 61 km away
  33. 3.782 km E of Nikolski, Alaska · 1806 days ago · 42 km deep · 67 km away
  34. 2.010 km ENE of Unalaska, Alaska · 1806 days ago · 92 km deep · 88 km away
  35. 2.082 km SW of Unalaska, Alaska · 1806 days ago · 73 km deep · 6 km away
  36. 1.8103 km ESE of Nikolski, Alaska · 1806 days ago · 26 km deep · 78 km away
  37. 2.882 km S of Unalaska, Alaska · 1805 days ago · 34 km deep · 57 km away
  38. 3.887 km SSW of Unalaska, Alaska · 1805 days ago · 35 km deep · 50 km away
  39. 2.890 km S of Unalaska, Alaska · 1804 days ago · 35 km deep · 60 km away
  40. 3.685 km WSW of Unalaska, Alaska · 1803 days ago · 113 km deep · 23 km away
  41. 1.746 km SW of Unalaska, Alaska · 1800 days ago · 18 km deep · 32 km away
  42. 2.026 km ESE of Unalaska, Alaska · 1800 days ago · 72 km deep · 96 km away
  43. 3.686 km ENE of Nikolski, Alaska · 1799 days ago · 76 km deep · 26 km away
  44. 1.787 km SSW of Unalaska, Alaska · 1799 days ago · 26 km deep · 47 km away
  45. 3.199 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 68 km away
  46. 3.0102 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 67 km away
  47. 2.9102 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 69 km away
  48. 1.719 km WSW of Dutch Harbor, Alaska · 1795 days ago · 6 km deep · 62 km away
  49. 2.014 km WSW of Dutch Harbor, Alaska · 1794 days ago · 7 km deep · 67 km away
  50. 1.513 km WSW of Dutch Harbor, Alaska · 1794 days ago · 10 km deep · 68 km away
  51. 1.513 km WSW of Dutch Harbor, Alaska · 1794 days ago · 10 km deep · 68 km away
  52. 3.948 km ESE of Nikolski, Alaska · 1792 days ago · 42 km deep · 85 km away
  53. 2.590 km S of Unalaska, Alaska · 1792 days ago · 29 km deep · 68 km away
  54. 1.614 km WSW of Dutch Harbor, Alaska · 1791 days ago · 8 km deep · 66 km away
  55. 2.615 km WSW of Unalaska, Alaska · 1791 days ago · 13 km deep · 65 km away
  56. 1.614 km WSW of Dutch Harbor, Alaska · 1791 days ago · 9 km deep · 66 km away
  57. 1.613 km WSW of Dutch Harbor, Alaska · 1791 days ago · 8 km deep · 67 km away
  58. 3.643 km ESE of Nikolski, Alaska · 1791 days ago · 35 km deep · 92 km away
  59. 1.9Fox Islands, Aleutian Islands, Alaska · 1791 days ago · 21 km deep · 51 km away
  60. 4.477 km S of Unalaska, Alaska · 1791 days ago · 10 km deep · 57 km away

The first 60 of 87.

Before

  1. 1.552 km SW of Unalaska, Alaska · 1840 days ago · 14 km deep · 26 km away
  2. 1.6124 km S of Unalaska, Alaska · 1843 days ago · 2 km deep · 87 km away
  3. 2.184 km S of Unalaska, Alaska · 1844 days ago · 26 km deep · 55 km away
  4. 3.6127 km S of Unalaska, Alaska · 1844 days ago · 7 km deep · 90 km away
  5. 2.115 km NNE of Nikolski, Alaska · 1845 days ago · 100 km deep · 95 km away
  6. 2.863 km SSW of Unalaska, Alaska · 1845 days ago · 67 km deep · 35 km away
  7. 1.570 km SW of Unalaska, Alaska · 1847 days ago · 31 km deep · 19 km away
  8. 2.9103 km ESE of Nikolski, Alaska · 1847 days ago · 25 km deep · 75 km away
  9. 3.174 km NNE of Nikolski, Alaska · 1847 days ago · 133 km deep · 69 km away
  10. 2.948 km SW of Unalaska, Alaska · 1847 days ago · 96 km deep · 33 km away
  11. 1.9136 km ESE of Nikolski, Alaska · 1848 days ago · 7 km deep · 96 km away
  12. 2.674 km SSW of Unalaska, Alaska · 1849 days ago · 55 km deep · 48 km away
  13. 1.688 km SSW of Unalaska, Alaska · 1849 days ago · 24 km deep · 42 km away
  14. 1.984 km E of Nikolski, Alaska · 1850 days ago · 53 km deep · 56 km away
  15. 2.218 km SSE of Unalaska, Alaska · 1850 days ago · 115 km deep · 78 km away
  16. 1.789 km E of Nikolski, Alaska · 1851 days ago · 25 km deep · 66 km away
  17. 4.041 km ESE of Nikolski, Alaska · 1852 days ago · 53 km deep · 86 km away
  18. 2.066 km SW of Unalaska, Alaska · 1852 days ago · 14 km deep · 12 km away
  19. 1.857 km ESE of Nikolski, Alaska · 1852 days ago · 37 km deep · 95 km away
  20. 1.628 km WSW of Unalaska, Alaska · 1853 days ago · 111 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bl171na. Read Wed, Sep 23, 2026, 10:19 PM UTC.