Alaska earthquakes

M2.4 earthquake 36 km SSE of Chignik, Alaska

A magnitude 2.4 earthquake struck 36 km SSE of Chignik, Alaska on Sat, Aug 21, 2021, 7:48 PM AKDT (03:48 UTC), 74 km (46 mi) below the surface.

A larger quake followed: M2.8 67 km SSE of Perryville, 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
2.4 (ml), micro
Local time
UTC
2021-08-22 03:48:43 UTC
Depth
74.1 km (46.0 mi), intermediate-depth
Epicenter
55.989° N, 158.209° 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
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 76 in the 60 days after this one and 123 in the 30 days before it.

After

  1. 2.118 km ESE of Perryville, Alaska · 1858 days ago · 65 km deep · 47 km away
  2. 2.280 km SSE of Perryville, Alaska · 1857 days ago · 25 km deep · 86 km away
  3. 2.867 km SSE of Perryville, Alaska · 1857 days ago · 15 km deep · 71 km away
  4. 2.036 km SE of Chignik, Alaska · 1856 days ago · 46 km deep · 10 km away
  5. 2.4131 km SE of Chignik, Alaska · 1856 days ago · 34 km deep · 97 km away
  6. 4.564 km SE of Perryville, Alaska · 1855 days ago · 7 km deep · 60 km away · felt by 2
  7. 1.893 km SSE of Perryville, Alaska · 1855 days ago · 25 km deep · 94 km away
  8. 1.9103 km SSE of Chignik, Alaska · 1855 days ago · 48 km deep · 68 km away
  9. 1.942 km ESE of Chignik, Alaska · 1855 days ago · 55 km deep · 30 km away
  10. 1.665 km SE of Perryville, Alaska · 1855 days ago · 24 km deep · 61 km away
  11. 1.860 km SSE of Chignik, Alaska · 1854 days ago · 7 km deep · 24 km away
  12. 1.987 km SSE of Perryville, Alaska · 1854 days ago · 25 km deep · 88 km away
  13. 1.960 km SE of Perryville, Alaska · 1854 days ago · 27 km deep · 51 km away
  14. 2.386 km ESE of Perryville, Alaska · 1853 days ago · 3 km deep · 56 km away
  15. 2.274 km SE of Perryville, Alaska · 1853 days ago · 17 km deep · 69 km away
  16. 3.377 km ESE of Chignik, Alaska · 1852 days ago · 10 km deep · 61 km away
  17. 2.387 km SSE of Chignik, Alaska · 1852 days ago · 8 km deep · 53 km away
  18. 1.755 km SSE of Perryville, Alaska · 1852 days ago · 25 km deep · 79 km away
  19. 1.7Alaska Peninsula · 1851 days ago · 31 km deep · 56 km away
  20. 1.659 km SSE of Perryville, Alaska · 1850 days ago · 28 km deep · 66 km away
  21. 1.663 km SE of Perryville, Alaska · 1850 days ago · 25 km deep · 50 km away
  22. 1.892 km E of Chignik, Alaska · 1850 days ago · 31 km deep · 88 km away
  23. 1.675 km ESE of Chignik, Alaska · 1850 days ago · 12 km deep · 53 km away
  24. 1.985 km SSE of Perryville, Alaska · 1850 days ago · 26 km deep · 87 km away
  25. 2.064 km SE of Perryville, Alaska · 1850 days ago · 15 km deep · 63 km away
  26. 1.961 km SE of Perryville, Alaska · 1849 days ago · 22 km deep · 52 km away
  27. 2.489 km SSE of Perryville, Alaska · 1848 days ago · 13 km deep · 96 km away
  28. 2.141 km ENE of Chignik, Alaska · 1847 days ago · 81 km deep · 52 km away
  29. 1.769 km SE of Perryville, Alaska · 1847 days ago · 43 km deep · 59 km away
  30. 2.0122 km SE of Chignik, Alaska · 1847 days ago · 27 km deep · 93 km away
  31. 2.077 km SSE of Perryville, Alaska · 1847 days ago · 20 km deep · 94 km away
  32. 1.990 km ENE of Chignik, Alaska · 1847 days ago · 43 km deep · 95 km away
  33. 1.646 km ENE of Chignik, Alaska · 1845 days ago · 65 km deep · 60 km away
  34. 2.9118 km SSE of Chignik, Alaska · 1845 days ago · 11 km deep · 83 km away
  35. 2.5116 km SE of Perryville, Alaska · 1844 days ago · 19 km deep · 93 km away
  36. 2.167 km SE of Perryville, Alaska · 1843 days ago · 12 km deep · 55 km away
  37. 2.5115 km SSE of Chignik, Alaska · 1843 days ago · 10 km deep · 81 km away
  38. 2.071 km SE of Perryville, Alaska · 1842 days ago · 13 km deep · 62 km away
  39. 1.759 km SE of Perryville, Alaska · 1842 days ago · 54 km deep · 57 km away
  40. 1.745 km ESE of Port Heiden, Alaska · 1842 days ago · 83 km deep · 87 km away
  41. 1.973 km SE of Perryville, Alaska · 1842 days ago · 9 km deep · 59 km away
  42. 1.757 km SE of Perryville, Alaska · 1841 days ago · 15 km deep · 56 km away
  43. 1.664 km ENE of Chignik, Alaska · 1841 days ago · 65 km deep · 78 km away
  44. 2.8110 km SE of Chignik, Alaska · 1841 days ago · 13 km deep · 76 km away
  45. 2.371 km SE of Chignik, Alaska · 1839 days ago · 47 km deep · 37 km away
  46. 2.038 km SSE of Perryville, Alaska · 1839 days ago · 42 km deep · 58 km away
  47. 2.275 km ESE of Chignik, Alaska · 1838 days ago · 19 km deep · 55 km away
  48. 2.359 km SE of Perryville, Alaska · 1837 days ago · 21 km deep · 54 km away
  49. 3.1118 km SE of Perryville, Alaska · 1836 days ago · 5 km deep · 96 km away
  50. 2.074 km NE of Chignik, Alaska · 1832 days ago · 2 km deep · 92 km away
  51. 2.586 km ENE of Chignik, Alaska · 1832 days ago · 12 km deep · 93 km away
  52. 2.574 km SSE of Perryville, Alaska · 1829 days ago · 6 km deep · 82 km away
  53. 1.820 km SSE of Ivanof Bay, Alaska · 1828 days ago · 60 km deep · 76 km away
  54. 2.0Alaska Peninsula · 1827 days ago · 9 km deep · 54 km away
  55. 2.231 km ESE of Chignik, Alaska · 1827 days ago · 61 km deep · 23 km away
  56. 1.920 km WNW of Chignik Lake, Alaska · 1827 days ago · 93 km deep · 64 km away
  57. 2.271 km SE of Perryville, Alaska · 1825 days ago · 14 km deep · 64 km away
  58. 1.644 km S of Ivanof Bay, Alaska · 1824 days ago · 71 km deep · 96 km away
  59. 2.890 km SE of Perryville, Alaska · 1823 days ago · 27 km deep · 77 km away
  60. 2.765 km SE of Perryville, Alaska · 1822 days ago · 5 km deep · 61 km away

The first 60 of 76.

Before

  1. 2.193 km SSE of Perryville, Alaska · 1859 days ago · 30 km deep · 93 km away
  2. 1.680 km ENE of Chignik, Alaska · 1859 days ago · 10 km deep · 90 km away
  3. 1.869 km SE of Perryville, Alaska · 1859 days ago · 25 km deep · 64 km away
  4. 2.466 km SE of Perryville, Alaska · 1859 days ago · 14 km deep · 59 km away
  5. 2.4119 km ESE of Chignik, Alaska · 1860 days ago · 28 km deep · 94 km away
  6. 1.921 km N of Chignik Lagoon, Alaska · 1861 days ago · 93 km deep · 60 km away
  7. 1.970 km NE of Chignik, Alaska · 1861 days ago · 11 km deep · 88 km away
  8. 2.174 km ENE of Chignik, Alaska · 1861 days ago · 4 km deep · 88 km away
  9. 2.480 km ENE of Chignik, Alaska · 1861 days ago · 9 km deep · 94 km away
  10. 2.1south of Alaska · 1861 days ago · 8 km deep · 100 km away
  11. 1.8100 km SSE of Chignik, Alaska · 1861 days ago · 20 km deep · 66 km away
  12. 1.772 km ENE of Chignik, Alaska · 1861 days ago · 1 km deep · 86 km away
  13. 2.273 km ENE of Chignik, Alaska · 1861 days ago · 8 km deep · 89 km away
  14. 2.882 km ENE of Chignik, Alaska · 1861 days ago · 6 km deep · 94 km away
  15. 2.779 km ENE of Chignik, Alaska · 1861 days ago · 2 km deep · 92 km away
  16. 4.081 km ENE of Chignik, Alaska · 1861 days ago · 11 km deep · 94 km away
  17. 2.661 km SE of Perryville, Alaska · 1861 days ago · 10 km deep · 52 km away
  18. 2.563 km NE of Chignik, Alaska · 1861 days ago · 75 km deep · 82 km away
  19. 2.5125 km SE of Perryville, Alaska · 1862 days ago · 33 km deep · 95 km away
  20. 1.9118 km SE of Chignik, Alaska · 1862 days ago · 18 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021ar1tw3f. Read Wed, Sep 23, 2026, 8:09 AM UTC.