Alaska earthquakes

M1.6 earthquake 51 km SW of Unalaska, Alaska

A magnitude 1.6 earthquake struck 51 km SW of Unalaska, Alaska on Fri, Sep 17, 2021, 4:29 AM AKDT (12:29 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M1.9 81 km SSE of Unalaska, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

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

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The earthquake

Magnitude
1.6 (ml), micro
Local time
UTC
2021-09-17 12:29:23 UTC
Depth
14.9 km (9.3 mi), shallow
Epicenter
53.573° N, 167.128° 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
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 89 in the 60 days after this one and 32 in the 30 days before it.

After

  1. 1.981 km SSE of Unalaska, Alaska · 1833 days ago · 25 km deep · 84 km away
  2. 3.457 km SSE of Unalaska, Alaska · 1828 days ago · 43 km deep · 72 km away
  3. 2.098 km E of Nikolski, Alaska · 1828 days ago · 26 km deep · 78 km away
  4. 2.684 km S of Unalaska, Alaska · 1827 days ago · 35 km deep · 55 km away
  5. 1.818 km WSW of Dutch Harbor, Alaska · 1826 days ago · 7 km deep · 37 km away
  6. 1.820 km WSW of Dutch Harbor, Alaska · 1826 days ago · 5 km deep · 35 km away
  7. 1.720 km WSW of Dutch Harbor, Alaska · 1826 days ago · 5 km deep · 35 km away
  8. 1.712 km W of Akutan, Alaska · 1826 days ago · 5 km deep · 100 km away
  9. 1.670 km SE of Unalaska, Alaska · 1826 days ago · 25 km deep · 93 km away
  10. 1.6Fox Islands, Aleutian Islands, Alaska · 1824 days ago · 23 km deep · 9 km away
  11. 3.2109 km SSW of Unalaska, Alaska · 1823 days ago · 29 km deep · 75 km away
  12. 2.156 km SW of Unalaska, Alaska · 1823 days ago · 89 km deep · 5 km away
  13. 3.085 km SSW of Unalaska, Alaska · 1823 days ago · 35 km deep · 54 km away
  14. 1.668 km SE of Unalaska, Alaska · 1822 days ago · 23 km deep · 92 km away
  15. 1.9107 km E of Nikolski, Alaska · 1820 days ago · 14 km deep · 73 km away
  16. 1.759 km SE of Unalaska, Alaska · 1818 days ago · 13 km deep · 89 km away
  17. 2.054 km SSW of Unalaska, Alaska · 1816 days ago · 71 km deep · 19 km away
  18. 1.566 km SE of Unalaska, Alaska · 1816 days ago · 24 km deep · 82 km away
  19. 2.984 km E of Nikolski, Alaska · 1814 days ago · 35 km deep · 91 km away
  20. 1.651 km S of Akutan, Alaska · 1813 days ago · 20 km deep · 91 km away
  21. 1.781 km SSE of Unalaska, Alaska · 1813 days ago · 26 km deep · 83 km away
  22. 4.177 km SSW of Unalaska, Alaska · 1811 days ago · 44 km deep · 45 km away
  23. 1.966 km S of Akutan, Alaska · 1811 days ago · 33 km deep · 95 km away
  24. 2.088 km S of Unalaska, Alaska · 1809 days ago · 41 km deep · 58 km away
  25. 3.1106 km W of Dutch Harbor, Alaska · 1809 days ago · 14 km deep · 82 km away
  26. 3.091 km SW of Unalaska, Alaska · 1809 days ago · 35 km deep · 41 km away
  27. 2.150 km ENE of Nikolski, Alaska · 1808 days ago · 65 km deep · 88 km away
  28. 3.782 km E of Nikolski, Alaska · 1807 days ago · 42 km deep · 89 km away
  29. 2.010 km ENE of Unalaska, Alaska · 1806 days ago · 92 km deep · 61 km away
  30. 2.082 km SW of Unalaska, Alaska · 1806 days ago · 73 km deep · 31 km away
  31. 1.8103 km ESE of Nikolski, Alaska · 1806 days ago · 26 km deep · 96 km away
  32. 2.882 km S of Unalaska, Alaska · 1806 days ago · 34 km deep · 54 km away
  33. 3.887 km SSW of Unalaska, Alaska · 1806 days ago · 35 km deep · 53 km away
  34. 2.890 km S of Unalaska, Alaska · 1805 days ago · 35 km deep · 60 km away
  35. 3.685 km WSW of Unalaska, Alaska · 1803 days ago · 113 km deep · 38 km away
  36. 1.746 km SW of Unalaska, Alaska · 1800 days ago · 18 km deep · 5 km away
  37. 2.026 km ESE of Unalaska, Alaska · 1800 days ago · 72 km deep · 70 km away
  38. 3.686 km ENE of Nikolski, Alaska · 1800 days ago · 76 km deep · 52 km away
  39. 1.787 km SSW of Unalaska, Alaska · 1799 days ago · 26 km deep · 51 km away
  40. 3.199 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 86 km away
  41. 3.0102 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 84 km away
  42. 2.9102 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 87 km away
  43. 1.719 km WSW of Dutch Harbor, Alaska · 1795 days ago · 6 km deep · 36 km away
  44. 2.270 km SE of Unalaska, Alaska · 1795 days ago · 23 km deep · 94 km away
  45. 2.014 km WSW of Dutch Harbor, Alaska · 1795 days ago · 7 km deep · 40 km away
  46. 1.513 km WSW of Dutch Harbor, Alaska · 1794 days ago · 10 km deep · 41 km away
  47. 1.513 km WSW of Dutch Harbor, Alaska · 1794 days ago · 10 km deep · 41 km away
  48. 2.590 km S of Unalaska, Alaska · 1792 days ago · 29 km deep · 66 km away
  49. 1.614 km WSW of Dutch Harbor, Alaska · 1792 days ago · 8 km deep · 40 km away
  50. 2.615 km WSW of Unalaska, Alaska · 1792 days ago · 13 km deep · 39 km away
  51. 1.614 km WSW of Dutch Harbor, Alaska · 1792 days ago · 9 km deep · 40 km away
  52. 1.613 km WSW of Dutch Harbor, Alaska · 1792 days ago · 8 km deep · 41 km away
  53. 1.9Fox Islands, Aleutian Islands, Alaska · 1791 days ago · 21 km deep · 47 km away
  54. 4.477 km S of Unalaska, Alaska · 1791 days ago · 10 km deep · 52 km away
  55. 3.172 km SSW of Unalaska, Alaska · 1791 days ago · 35 km deep · 44 km away
  56. 3.470 km SSW of Unalaska, Alaska · 1791 days ago · 30 km deep · 42 km away
  57. 2.074 km SSW of Unalaska, Alaska · 1791 days ago · 26 km deep · 46 km away
  58. 3.676 km S of Unalaska, Alaska · 1789 days ago · 35 km deep · 52 km away
  59. 1.890 km E of Nikolski, Alaska · 1789 days ago · 51 km deep · 74 km away
  60. 1.7108 km S of Unalaska, Alaska · 1789 days ago · 13 km deep · 81 km away

The first 60 of 89.

Before

  1. 1.652 km SE of Unalaska, Alaska · 1833 days ago · 25 km deep · 71 km away
  2. 1.720 km WSW of Dutch Harbor, Alaska · 1833 days ago · 6 km deep · 35 km away
  3. 1.621 km WSW of Dutch Harbor, Alaska · 1833 days ago · 7 km deep · 36 km away
  4. 1.521 km WSW of Dutch Harbor, Alaska · 1833 days ago · 7 km deep · 35 km away
  5. 1.620 km WSW of Dutch Harbor, Alaska · 1834 days ago · 7 km deep · 36 km away
  6. 1.8102 km E of Nikolski, Alaska · 1840 days ago · 25 km deep · 77 km away
  7. 1.578 km SW of Unalaska, Alaska · 1841 days ago · 31 km deep · 27 km away
  8. 1.552 km SW of Unalaska, Alaska · 1841 days ago · 14 km deep · 2 km away
  9. 1.645 km ESE of Unalaska, Alaska · 1841 days ago · 63 km deep · 83 km away
  10. 1.6124 km S of Unalaska, Alaska · 1843 days ago · 2 km deep · 93 km away
  11. 2.184 km S of Unalaska, Alaska · 1844 days ago · 26 km deep · 54 km away
  12. 3.6127 km S of Unalaska, Alaska · 1844 days ago · 7 km deep · 97 km away
  13. 2.863 km SSW of Unalaska, Alaska · 1846 days ago · 67 km deep · 27 km away
  14. 1.570 km SW of Unalaska, Alaska · 1847 days ago · 31 km deep · 22 km away
  15. 2.9103 km ESE of Nikolski, Alaska · 1848 days ago · 25 km deep · 93 km away
  16. 3.174 km NNE of Nikolski, Alaska · 1848 days ago · 133 km deep · 89 km away
  17. 2.948 km SW of Unalaska, Alaska · 1848 days ago · 96 km deep · 11 km away
  18. 2.674 km SSW of Unalaska, Alaska · 1850 days ago · 55 km deep · 44 km away
  19. 1.688 km SSW of Unalaska, Alaska · 1850 days ago · 24 km deep · 49 km away
  20. 1.984 km E of Nikolski, Alaska · 1850 days ago · 53 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021by71p6j. Read Thu, Sep 24, 2026, 9:54 AM UTC.