Alaska earthquakes

M1.8 earthquake 73 km WSW of Nanwalek, Alaska

A magnitude 1.8 earthquake struck 73 km WSW of Nanwalek, Alaska on Wed, Oct 20, 2021, 3:21 AM AKDT (11:21 UTC), 74 km (46 mi) below the surface.

A larger quake followed: M2.0 51 km SSW of Nanwalek, 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
1.8 (ml), micro
Local time
UTC
2021-10-20 11:21:01 UTC
Depth
74.4 km (46.2 mi), intermediate-depth
Epicenter
59.125° N, 153.119° 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
67

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 2.051 km SSW of Nanwalek, Alaska · 1769 days ago · 52 km deep · 47 km away
  2. 2.434 km S of Port Graham, Alaska · 1769 days ago · 50 km deep · 71 km away
  3. 1.943 km E of Pedro Bay, Alaska · 1769 days ago · 117 km deep · 69 km away
  4. 2.035 km ENE of Pedro Bay, Alaska · 1769 days ago · 135 km deep · 83 km away
  5. 1.755 km WNW of Nanwalek, Alaska · 1769 days ago · 87 km deep · 44 km away
  6. 1.528 km W of Anchor Point, Alaska · 1768 days ago · 77 km deep · 85 km away
  7. 1.733 km WNW of Nanwalek, Alaska · 1768 days ago · 68 km deep · 58 km away
  8. 1.765 km WNW of Anchor Point, Alaska · 1767 days ago · 118 km deep · 90 km away
  9. 1.944 km W of Nanwalek, Alaska · 1767 days ago · 78 km deep · 36 km away
  10. 1.842 km WNW of Anchor Point, Alaska · 1767 days ago · 86 km deep · 90 km away
  11. 1.850 km E of Pedro Bay, Alaska · 1767 days ago · 116 km deep · 83 km away
  12. 1.638 km E of Pedro Bay, Alaska · 1767 days ago · 118 km deep · 78 km away
  13. 2.144 km WNW of Anchor Point, Alaska · 1767 days ago · 86 km deep · 88 km away
  14. 1.842 km W of Anchor Point, Alaska · 1767 days ago · 92 km deep · 80 km away
  15. 3.860 km SW of Nanwalek, Alaska · 1767 days ago · 71 km deep · 28 km away · felt by 2
  16. 2.541 km WNW of Nanwalek, Alaska · 1767 days ago · 72 km deep · 49 km away
  17. 1.973 km SSE of Kokhanok, Alaska · 1767 days ago · 103 km deep · 73 km away
  18. 3.155 km SSW of Nanwalek, Alaska · 1767 days ago · 51 km deep · 59 km away
  19. 2.455 km W of Anchor Point, Alaska · 1767 days ago · 88 km deep · 75 km away
  20. 1.950 km ENE of Pedro Bay, Alaska · 1766 days ago · 129 km deep · 100 km away
  21. 1.529 km WSW of Anchor Point, Alaska · 1766 days ago · 65 km deep · 74 km away
  22. 1.686 km NW of Aleneva, Alaska · 1766 days ago · 5 km deep · 59 km away
  23. 1.630 km WSW of Anchor Point, Alaska · 1766 days ago · 79 km deep · 74 km away
  24. 2.260 km ESE of Pedro Bay, Alaska · 1766 days ago · 105 km deep · 52 km away
  25. 1.960 km WNW of Anchor Point, Alaska · 1766 days ago · 94 km deep · 93 km away
  26. 1.944 km W of Nanwalek, Alaska · 1766 days ago · 85 km deep · 36 km away
  27. 1.87 km WNW of Nanwalek, Alaska · 1766 days ago · 74 km deep · 68 km away
  28. 1.868 km SE of Pope-Vannoy Landing, Alaska · 1765 days ago · 92 km deep · 36 km away
  29. 1.662 km ESE of Pedro Bay, Alaska · 1765 days ago · 92 km deep · 48 km away
  30. 1.853 km ESE of Pedro Bay, Alaska · 1765 days ago · 103 km deep · 61 km away
  31. 1.868 km SE of Pope-Vannoy Landing, Alaska · 1764 days ago · 87 km deep · 25 km away
  32. 1.689 km WNW of Aleneva, Alaska · 1764 days ago · 86 km deep · 91 km away
  33. 1.859 km SE of Pedro Bay, Alaska · 1764 days ago · 101 km deep · 33 km away
  34. 1.5Southern Alaska · 1764 days ago · 75 km deep · 86 km away
  35. 1.587 km NNW of Aleneva, Alaska · 1764 days ago · 76 km deep · 35 km away
  36. 1.563 km WNW of Anchor Point, Alaska · 1764 days ago · 109 km deep · 97 km away
  37. 1.562 km E of Pedro Bay, Alaska · 1764 days ago · 87 km deep · 72 km away
  38. 2.8Alaska Peninsula · 1764 days ago · 116 km deep · 77 km away
  39. 1.838 km WNW of Nanwalek, Alaska · 1763 days ago · 69 km deep · 46 km away
  40. 1.637 km W of Nanwalek, Alaska · 1763 days ago · 81 km deep · 45 km away
  41. 1.848 km WNW of Nanwalek, Alaska · 1763 days ago · 74 km deep · 48 km away
  42. 1.961 km WNW of Nanwalek, Alaska · 1763 days ago · 97 km deep · 53 km away
  43. 1.834 km E of Pedro Bay, Alaska · 1763 days ago · 128 km deep · 78 km away
  44. 1.754 km WNW of Anchor Point, Alaska · 1763 days ago · 99 km deep · 87 km away
  45. 1.959 km SSW of Nanwalek, Alaska · 1763 days ago · 64 km deep · 49 km away
  46. 2.242 km ENE of Pedro Bay, Alaska · 1762 days ago · 133 km deep · 87 km away
  47. 1.956 km E of Pedro Bay, Alaska · 1762 days ago · 121 km deep · 85 km away
  48. 1.78 km SE of Seldovia Village, Alaska · 1762 days ago · 51 km deep · 95 km away · felt by 1
  49. 2.658 km WNW of Anchor Point, Alaska · 1762 days ago · 105 km deep · 92 km away
  50. 1.759 km W of Anchor Point, Alaska · 1762 days ago · 93 km deep · 85 km away
  51. 2.136 km E of Pedro Bay, Alaska · 1762 days ago · 122 km deep · 80 km away
  52. 2.585 km NNW of Aleneva, Alaska · 1761 days ago · 66 km deep · 35 km away
  53. 3.044 km WNW of Anchor Point, Alaska · 1761 days ago · 94 km deep · 98 km away
  54. 1.963 km SSE of Kokhanok, Alaska · 1761 days ago · 119 km deep · 86 km away
  55. 1.657 km W of Anchor Point, Alaska · 1761 days ago · 84 km deep · 69 km away
  56. 2.138 km WSW of Anchor Point, Alaska · 1761 days ago · 75 km deep · 74 km away
  57. 1.657 km W of Nanwalek, Alaska · 1761 days ago · 78 km deep · 38 km away
  58. 1.625 km WNW of Anchor Point, Alaska · 1761 days ago · 82 km deep · 99 km away
  59. 2.948 km WSW of Anchor Point, Alaska · 1761 days ago · 98 km deep · 64 km away
  60. 1.834 km E of Pedro Bay, Alaska · 1761 days ago · 129 km deep · 78 km away

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021dgr4yy2. Read Wed, Sep 23, 2026, 4:42 AM UTC.