Alaska earthquakes

M1.7 earthquake 46 km SW of Unalaska, Alaska

A magnitude 1.7 earthquake struck 46 km SW of Unalaska, Alaska on Tue, Oct 19, 2021, 2:32 PM AKDT (22:32 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.0 26 km ESE 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
1.7 (ml), micro
Local time
UTC
2021-10-19 22:32:40 UTC
Depth
18.1 km (11.2 mi), shallow
Epicenter
53.603° N, 167.075° 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
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 86 in the 60 days after this one and 34 in the 30 days before it.

After

  1. 2.026 km ESE of Unalaska, Alaska · 1800 days ago · 72 km deep · 65 km away
  2. 3.686 km ENE of Nikolski, Alaska · 1800 days ago · 76 km deep · 57 km away
  3. 1.787 km SSW of Unalaska, Alaska · 1799 days ago · 26 km deep · 53 km away
  4. 3.199 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 90 km away
  5. 3.0102 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 88 km away
  6. 2.9102 km E of Nikolski, Alaska · 1796 days ago · 35 km deep · 91 km away
  7. 1.719 km WSW of Dutch Harbor, Alaska · 1795 days ago · 6 km deep · 31 km away
  8. 2.270 km SE of Unalaska, Alaska · 1795 days ago · 23 km deep · 91 km away
  9. 2.014 km WSW of Dutch Harbor, Alaska · 1795 days ago · 7 km deep · 36 km away
  10. 1.513 km WSW of Dutch Harbor, Alaska · 1794 days ago · 10 km deep · 37 km away
  11. 1.513 km WSW of Dutch Harbor, Alaska · 1794 days ago · 10 km deep · 37 km away
  12. 2.590 km S of Unalaska, Alaska · 1792 days ago · 29 km deep · 67 km away
  13. 1.614 km WSW of Dutch Harbor, Alaska · 1792 days ago · 8 km deep · 35 km away
  14. 2.615 km WSW of Unalaska, Alaska · 1792 days ago · 13 km deep · 34 km away
  15. 1.614 km WSW of Dutch Harbor, Alaska · 1792 days ago · 9 km deep · 35 km away
  16. 1.613 km WSW of Dutch Harbor, Alaska · 1792 days ago · 8 km deep · 36 km away
  17. 1.9Fox Islands, Aleutian Islands, Alaska · 1791 days ago · 21 km deep · 48 km away
  18. 4.477 km S of Unalaska, Alaska · 1791 days ago · 10 km deep · 53 km away
  19. 3.172 km SSW of Unalaska, Alaska · 1791 days ago · 35 km deep · 45 km away
  20. 3.470 km SSW of Unalaska, Alaska · 1791 days ago · 30 km deep · 43 km away
  21. 2.074 km SSW of Unalaska, Alaska · 1791 days ago · 26 km deep · 47 km away
  22. 3.676 km S of Unalaska, Alaska · 1789 days ago · 35 km deep · 53 km away
  23. 1.890 km E of Nikolski, Alaska · 1789 days ago · 51 km deep · 79 km away
  24. 1.7108 km S of Unalaska, Alaska · 1789 days ago · 13 km deep · 83 km away
  25. 1.786 km SSW of Unalaska, Alaska · 1789 days ago · 26 km deep · 45 km away
  26. 2.077 km S of Unalaska, Alaska · 1788 days ago · 26 km deep · 51 km away
  27. 2.686 km ENE of Nikolski, Alaska · 1787 days ago · 64 km deep · 59 km away
  28. 1.774 km SSW of Unalaska, Alaska · 1787 days ago · 42 km deep · 47 km away
  29. 1.849 km SSE of Unalaska, Alaska · 1787 days ago · 48 km deep · 59 km away
  30. 1.964 km SSE of Unalaska, Alaska · 1786 days ago · 35 km deep · 61 km away
  31. 2.759 km SSW of Unalaska, Alaska · 1785 days ago · 29 km deep · 26 km away
  32. 1.917 km W of Akutan, Alaska · 1785 days ago · 17 km deep · 89 km away
  33. 1.847 km ESE of Unalaska, Alaska · 1784 days ago · 23 km deep · 79 km away
  34. 1.768 km SE of Unalaska, Alaska · 1784 days ago · 22 km deep · 87 km away
  35. 2.298 km S of Unalaska, Alaska · 1783 days ago · 26 km deep · 80 km away
  36. 1.681 km SW of Unalaska, Alaska · 1782 days ago · 13 km deep · 37 km away
  37. 1.5103 km E of Nikolski, Alaska · 1782 days ago · 26 km deep · 74 km away
  38. 1.5105 km E of Nikolski, Alaska · 1782 days ago · 7 km deep · 68 km away
  39. 3.282 km S of Unalaska, Alaska · 1782 days ago · 27 km deep · 58 km away
  40. 2.182 km S of Unalaska, Alaska · 1782 days ago · 26 km deep · 59 km away
  41. 1.623 km S of Unalaska, Alaska · 1781 days ago · 71 km deep · 40 km away
  42. 1.623 km S of Unalaska, Alaska · 1781 days ago · 71 km deep · 40 km away
  43. 1.519 km ESE of Unalaska, Alaska · 1780 days ago · 79 km deep · 56 km away
  44. 3.986 km SSW of Unalaska, Alaska · 1780 days ago · 42 km deep · 49 km away
  45. 1.894 km SSW of Unalaska, Alaska · 1780 days ago · 26 km deep · 59 km away
  46. 1.554 km SE of Unalaska, Alaska · 1778 days ago · 55 km deep · 81 km away
  47. 1.845 km SW of Unalaska, Alaska · 1776 days ago · 10 km deep · 5 km away
  48. 2.675 km SSW of Unalaska, Alaska · 1776 days ago · 41 km deep · 49 km away
  49. 1.5100 km SSW of Unalaska, Alaska · 1775 days ago · 13 km deep · 66 km away
  50. 3.539 km SSE of Unalaska, Alaska · 1775 days ago · 65 km deep · 55 km away
  51. 1.629 km S of Unalaska, Alaska · 1774 days ago · 13 km deep · 39 km away
  52. 1.854 km E of Nikolski, Alaska · 1773 days ago · 74 km deep · 96 km away
  53. 2.290 km SW of Unalaska, Alaska · 1772 days ago · 53 km deep · 46 km away
  54. 1.965 km S of Unalaska, Alaska · 1772 days ago · 71 km deep · 48 km away
  55. 1.791 km SSW of Unalaska, Alaska · 1771 days ago · 26 km deep · 57 km away
  56. 1.824 km S of Unalaska, Alaska · 1771 days ago · 25 km deep · 38 km away
  57. 1.892 km SSW of Unalaska, Alaska · 1769 days ago · 46 km deep · 50 km away
  58. 2.739 km SSW of Akutan, Alaska · 1768 days ago · 76 km deep · 77 km away
  59. 2.051 km S of Akutan, Alaska · 1768 days ago · 32 km deep · 83 km away
  60. 2.172 km E of Nikolski, Alaska · 1767 days ago · 35 km deep · 89 km away

The first 60 of 86.

Before

  1. 3.685 km WSW of Unalaska, Alaska · 1803 days ago · 113 km deep · 42 km away
  2. 2.890 km S of Unalaska, Alaska · 1805 days ago · 35 km deep · 62 km away
  3. 3.887 km SSW of Unalaska, Alaska · 1806 days ago · 35 km deep · 55 km away
  4. 2.882 km S of Unalaska, Alaska · 1806 days ago · 34 km deep · 56 km away
  5. 1.8103 km ESE of Nikolski, Alaska · 1806 days ago · 26 km deep · 100 km away
  6. 2.082 km SW of Unalaska, Alaska · 1806 days ago · 73 km deep · 36 km away
  7. 2.010 km ENE of Unalaska, Alaska · 1806 days ago · 92 km deep · 56 km away
  8. 3.782 km E of Nikolski, Alaska · 1806 days ago · 42 km deep · 94 km away
  9. 2.150 km ENE of Nikolski, Alaska · 1808 days ago · 65 km deep · 92 km away
  10. 3.091 km SW of Unalaska, Alaska · 1808 days ago · 35 km deep · 46 km away
  11. 3.1106 km W of Dutch Harbor, Alaska · 1808 days ago · 14 km deep · 83 km away
  12. 2.088 km S of Unalaska, Alaska · 1809 days ago · 41 km deep · 60 km away
  13. 1.966 km S of Akutan, Alaska · 1811 days ago · 33 km deep · 91 km away
  14. 4.177 km SSW of Unalaska, Alaska · 1811 days ago · 44 km deep · 47 km away
  15. 1.781 km SSE of Unalaska, Alaska · 1813 days ago · 26 km deep · 81 km away
  16. 1.651 km S of Akutan, Alaska · 1813 days ago · 20 km deep · 87 km away
  17. 2.984 km E of Nikolski, Alaska · 1814 days ago · 35 km deep · 95 km away
  18. 1.566 km SE of Unalaska, Alaska · 1816 days ago · 24 km deep · 79 km away
  19. 2.054 km SSW of Unalaska, Alaska · 1816 days ago · 71 km deep · 20 km away
  20. 1.759 km SE of Unalaska, Alaska · 1818 days ago · 13 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021dfa7tix. Read Thu, Sep 24, 2026, 8:01 AM UTC.