Alaska earthquakes

M1.6 earthquake 52 km SE of Unalaska, Alaska

A magnitude 1.6 earthquake struck 52 km SE of Unalaska, Alaska on Thu, Sep 16, 2021, 11:24 PM AKDT (07:24 UTC), 25 km (16 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 07:24:07 UTC
Depth
25.0 km (15.5 mi), shallow
Epicenter
53.497° N, 166.055° 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
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 111 in the 60 days after this one and 45 in the 30 days before it.

After

  1. 1.651 km SW of Unalaska, Alaska · 1832 days ago · 15 km deep · 71 km away
  2. 1.981 km SSE of Unalaska, Alaska · 1832 days ago · 25 km deep · 32 km away
  3. 1.875 km SSE of Akutan, Alaska · 1828 days ago · 11 km deep · 49 km away
  4. 1.832 km SE of Akutan, Alaska · 1828 days ago · 65 km deep · 66 km away
  5. 3.457 km SSE of Unalaska, Alaska · 1827 days ago · 43 km deep · 6 km away
  6. 2.054 km E of Akutan, Alaska · 1827 days ago · 71 km deep · 99 km away
  7. 2.684 km S of Unalaska, Alaska · 1826 days ago · 35 km deep · 62 km away
  8. 1.818 km WSW of Dutch Harbor, Alaska · 1825 days ago · 7 km deep · 63 km away
  9. 1.820 km WSW of Dutch Harbor, Alaska · 1825 days ago · 5 km deep · 63 km away
  10. 1.720 km WSW of Dutch Harbor, Alaska · 1825 days ago · 5 km deep · 64 km away
  11. 1.712 km W of Akutan, Alaska · 1825 days ago · 5 km deep · 73 km away
  12. 1.670 km SE of Unalaska, Alaska · 1824 days ago · 25 km deep · 22 km away
  13. 2.088 km SE of Akutan, Alaska · 1823 days ago · 61 km deep · 95 km away
  14. 1.6Fox Islands, Aleutian Islands, Alaska · 1823 days ago · 23 km deep · 65 km away
  15. 2.096 km SE of Akutan, Alaska · 1822 days ago · 26 km deep · 90 km away
  16. 3.2109 km SSW of Unalaska, Alaska · 1822 days ago · 29 km deep · 85 km away
  17. 2.156 km SW of Unalaska, Alaska · 1822 days ago · 89 km deep · 75 km away
  18. 3.085 km SSW of Unalaska, Alaska · 1821 days ago · 35 km deep · 66 km away
  19. 1.668 km SE of Unalaska, Alaska · 1821 days ago · 23 km deep · 20 km away
  20. 2.160 km SSE of Akutan, Alaska · 1820 days ago · 46 km deep · 54 km away
  21. 1.759 km SE of Unalaska, Alaska · 1817 days ago · 13 km deep · 20 km away
  22. 1.9Fox Islands, Aleutian Islands, Alaska · 1817 days ago · 49 km deep · 66 km away
  23. 1.876 km SSE of Akutan, Alaska · 1817 days ago · 22 km deep · 45 km away
  24. 2.054 km SSW of Unalaska, Alaska · 1815 days ago · 71 km deep · 58 km away
  25. 1.566 km SE of Unalaska, Alaska · 1815 days ago · 24 km deep · 14 km away
  26. 1.976 km S of Akutan, Alaska · 1814 days ago · 34 km deep · 33 km away
  27. 1.651 km S of Akutan, Alaska · 1812 days ago · 20 km deep · 27 km away
  28. 1.781 km SSE of Unalaska, Alaska · 1812 days ago · 26 km deep · 32 km away
  29. 2.192 km SE of Akutan, Alaska · 1812 days ago · 30 km deep · 88 km away
  30. 4.177 km SSW of Unalaska, Alaska · 1810 days ago · 44 km deep · 63 km away
  31. 1.966 km S of Akutan, Alaska · 1809 days ago · 33 km deep · 24 km away
  32. 2.088 km S of Unalaska, Alaska · 1808 days ago · 41 km deep · 66 km away
  33. 3.091 km SW of Unalaska, Alaska · 1807 days ago · 35 km deep · 95 km away
  34. 3.090 km SSE of Akutan, Alaska · 1806 days ago · 35 km deep · 64 km away
  35. 2.184 km SE of Akutan, Alaska · 1806 days ago · 26 km deep · 84 km away
  36. 2.010 km ENE of Unalaska, Alaska · 1805 days ago · 92 km deep · 49 km away
  37. 2.082 km SW of Unalaska, Alaska · 1805 days ago · 73 km deep · 98 km away
  38. 2.882 km S of Unalaska, Alaska · 1805 days ago · 34 km deep · 60 km away
  39. 3.887 km SSW of Unalaska, Alaska · 1804 days ago · 35 km deep · 71 km away
  40. 2.180 km SE of Akutan, Alaska · 1804 days ago · 39 km deep · 73 km away
  41. 2.164 km ESE of Akutan, Alaska · 1804 days ago · 76 km deep · 84 km away
  42. 2.890 km S of Unalaska, Alaska · 1804 days ago · 35 km deep · 67 km away
  43. 2.174 km SSE of Akutan, Alaska · 1803 days ago · 49 km deep · 49 km away
  44. 2.073 km SSE of Akutan, Alaska · 1803 days ago · 49 km deep · 50 km away
  45. 2.080 km SE of Akutan, Alaska · 1800 days ago · 58 km deep · 75 km away
  46. 2.590 km SSE of Akutan, Alaska · 1800 days ago · 35 km deep · 63 km away
  47. 1.746 km SW of Unalaska, Alaska · 1799 days ago · 18 km deep · 68 km away
  48. 2.026 km ESE of Unalaska, Alaska · 1799 days ago · 72 km deep · 35 km away
  49. 1.872 km SSE of Akutan, Alaska · 1798 days ago · 3 km deep · 46 km away
  50. 2.061 km SSE of Akutan, Alaska · 1798 days ago · 14 km deep · 56 km away
  51. 1.787 km SSW of Unalaska, Alaska · 1798 days ago · 26 km deep · 72 km away
  52. 3.0138 km SE of Unalaska, Alaska · 1796 days ago · 8 km deep · 85 km away
  53. 1.719 km WSW of Dutch Harbor, Alaska · 1794 days ago · 6 km deep · 63 km away
  54. 2.051 km SSE of Akutan, Alaska · 1794 days ago · 75 km deep · 51 km away
  55. 2.270 km SE of Unalaska, Alaska · 1794 days ago · 23 km deep · 22 km away
  56. 2.014 km WSW of Dutch Harbor, Alaska · 1794 days ago · 7 km deep · 61 km away
  57. 2.084 km SSE of Akutan, Alaska · 1793 days ago · 22 km deep · 54 km away
  58. 3.383 km SE of Akutan, Alaska · 1793 days ago · 27 km deep · 67 km away
  59. 2.276 km SSE of Akutan, Alaska · 1793 days ago · 61 km deep · 56 km away
  60. 3.193 km SSE of Akutan, Alaska · 1793 days ago · 29 km deep · 66 km away

The first 60 of 111.

Before

  1. 1.720 km WSW of Dutch Harbor, Alaska · 1832 days ago · 6 km deep · 65 km away
  2. 1.621 km WSW of Dutch Harbor, Alaska · 1832 days ago · 7 km deep · 66 km away
  3. 1.521 km WSW of Dutch Harbor, Alaska · 1832 days ago · 7 km deep · 65 km away
  4. 1.620 km WSW of Dutch Harbor, Alaska · 1832 days ago · 7 km deep · 65 km away
  5. 1.65 km SW of Akutan, Alaska · 1833 days ago · 71 km deep · 68 km away
  6. 3.638 km SE of Akutan, Alaska · 1836 days ago · 76 km deep · 65 km away
  7. 1.841 km SE of Akutan, Alaska · 1836 days ago · 60 km deep · 63 km away
  8. 2.049 km SE of Akutan, Alaska · 1836 days ago · 73 km deep · 69 km away
  9. 2.888 km SSE of Akutan, Alaska · 1839 days ago · 35 km deep · 56 km away
  10. 1.825 km SE of Akutan, Alaska · 1839 days ago · 72 km deep · 64 km away
  11. 1.578 km SW of Unalaska, Alaska · 1840 days ago · 31 km deep · 93 km away
  12. 1.552 km SW of Unalaska, Alaska · 1840 days ago · 14 km deep · 73 km away
  13. 1.645 km ESE of Unalaska, Alaska · 1840 days ago · 63 km deep · 27 km away
  14. 2.421 km ESE of Akutan, Alaska · 1841 days ago · 81 km deep · 76 km away
  15. 1.880 km ESE of Akutan, Alaska · 1841 days ago · 47 km deep · 93 km away
  16. 1.6124 km S of Unalaska, Alaska · 1842 days ago · 2 km deep · 94 km away
  17. 1.913 km S of Akutan, Alaska · 1843 days ago · 111 km deep · 61 km away
  18. 2.184 km S of Unalaska, Alaska · 1843 days ago · 26 km deep · 63 km away
  19. 3.6127 km S of Unalaska, Alaska · 1843 days ago · 7 km deep · 97 km away
  20. 1.889 km SE of Akutan, Alaska · 1844 days ago · 65 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021by41fcw. Read Wed, Sep 23, 2026, 5:31 AM UTC.