Alaska earthquakes

M1.8 earthquake 100 km SSE of Chignik, Alaska

A magnitude 1.8 earthquake struck 100 km SSE of Chignik, Alaska on Wed, Aug 18, 2021, 8:55 PM AKDT (04:55 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M2.1 south of 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
2021-08-19 04:55:55 UTC
Depth
20.1 km (12.5 mi), shallow
Epicenter
55.537° N, 157.523° 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
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 171 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 2.1south of Alaska · 1862 days ago · 8 km deep · 60 km away
  2. 2.3120 km SSE of Perryville, Alaska · 1862 days ago · 27 km deep · 69 km away
  3. 2.4119 km ESE of Chignik, Alaska · 1861 days ago · 28 km deep · 50 km away
  4. 2.0154 km ESE of Chignik, Alaska · 1861 days ago · 48 km deep · 83 km away
  5. 2.4south of Alaska · 1861 days ago · 25 km deep · 76 km away
  6. 2.5138 km SE of Chignik, Alaska · 1861 days ago · 24 km deep · 51 km away
  7. 2.0132 km SE of Perryville, Alaska · 1861 days ago · 24 km deep · 40 km away
  8. 2.466 km SE of Perryville, Alaska · 1860 days ago · 14 km deep · 57 km away
  9. 3.4156 km SSE of Chignik, Alaska · 1860 days ago · 13 km deep · 56 km away
  10. 1.869 km SE of Perryville, Alaska · 1860 days ago · 25 km deep · 59 km away
  11. 3.7150 km SSE of Chignik, Alaska · 1860 days ago · 7 km deep · 50 km away
  12. 3.3150 km ESE of Chignik, Alaska · 1860 days ago · 41 km deep · 88 km away
  13. 2.193 km SSE of Perryville, Alaska · 1860 days ago · 30 km deep · 72 km away
  14. 2.5110 km SSE of Perryville, Alaska · 1860 days ago · 15 km deep · 80 km away
  15. 2.436 km SSE of Chignik, Alaska · 1859 days ago · 74 km deep · 66 km away
  16. 3.0136 km SE of Perryville, Alaska · 1859 days ago · 25 km deep · 51 km away
  17. 2.118 km ESE of Perryville, Alaska · 1859 days ago · 65 km deep · 92 km away
  18. 2.280 km SSE of Perryville, Alaska · 1858 days ago · 25 km deep · 76 km away
  19. 2.4156 km SSE of Chignik, Alaska · 1858 days ago · 30 km deep · 56 km away
  20. 2.0112 km SSE of Perryville, Alaska · 1858 days ago · 38 km deep · 69 km away
  21. 2.4133 km SE of Perryville, Alaska · 1858 days ago · 40 km deep · 53 km away
  22. 2.867 km SSE of Perryville, Alaska · 1858 days ago · 15 km deep · 71 km away
  23. 2.6166 km ESE of Chignik, Alaska · 1857 days ago · 16 km deep · 96 km away
  24. 2.036 km SE of Chignik, Alaska · 1857 days ago · 46 km deep · 64 km away
  25. 2.4147 km SE of Chignik, Alaska · 1857 days ago · 36 km deep · 55 km away
  26. 2.4131 km SE of Chignik, Alaska · 1857 days ago · 34 km deep · 32 km away
  27. 3.0137 km SE of Perryville, Alaska · 1856 days ago · 18 km deep · 47 km away
  28. 4.564 km SE of Perryville, Alaska · 1856 days ago · 7 km deep · 61 km away · felt by 2
  29. 1.893 km SSE of Perryville, Alaska · 1856 days ago · 25 km deep · 74 km away
  30. 2.8163 km SE of Chignik, Alaska · 1856 days ago · 33 km deep · 65 km away
  31. 2.5130 km SE of Perryville, Alaska · 1856 days ago · 25 km deep · 63 km away
  32. 1.9103 km SSE of Chignik, Alaska · 1856 days ago · 48 km deep · 10 km away
  33. 1.942 km ESE of Chignik, Alaska · 1856 days ago · 55 km deep · 67 km away
  34. 2.196 km SSE of Perryville, Alaska · 1856 days ago · 21 km deep · 97 km away
  35. 1.665 km SE of Perryville, Alaska · 1856 days ago · 24 km deep · 61 km away
  36. 2.1143 km SE of Perryville, Alaska · 1856 days ago · 43 km deep · 55 km away
  37. 1.860 km SSE of Chignik, Alaska · 1855 days ago · 7 km deep · 43 km away
  38. 2.5155 km SE of Chignik, Alaska · 1855 days ago · 44 km deep · 65 km away
  39. 1.987 km SSE of Perryville, Alaska · 1855 days ago · 25 km deep · 71 km away
  40. 2.6147 km SSE of Chignik, Alaska · 1855 days ago · 25 km deep · 47 km away
  41. 1.960 km SE of Perryville, Alaska · 1855 days ago · 27 km deep · 57 km away
  42. 2.4170 km SE of Chignik, Alaska · 1854 days ago · 36 km deep · 84 km away
  43. 2.386 km ESE of Perryville, Alaska · 1854 days ago · 3 km deep · 28 km away
  44. 1.9144 km ESE of Chignik, Alaska · 1854 days ago · 50 km deep · 79 km away
  45. 2.3132 km SE of Perryville, Alaska · 1854 days ago · 21 km deep · 61 km away
  46. 2.3188 km SE of Perryville, Alaska · 1854 days ago · 25 km deep · 92 km away
  47. 3.5123 km SSE of Perryville, Alaska · 1854 days ago · 12 km deep · 95 km away
  48. 2.5136 km SE of Chignik, Alaska · 1854 days ago · 15 km deep · 38 km away
  49. 2.7138 km SE of Perryville, Alaska · 1854 days ago · 14 km deep · 53 km away
  50. 2.274 km SE of Perryville, Alaska · 1854 days ago · 17 km deep · 60 km away
  51. 3.377 km ESE of Chignik, Alaska · 1853 days ago · 10 km deep · 59 km away
  52. 2.387 km SSE of Chignik, Alaska · 1853 days ago · 8 km deep · 13 km away
  53. 3.0158 km SE of Chignik, Alaska · 1853 days ago · 40 km deep · 74 km away
  54. 1.755 km SSE of Perryville, Alaska · 1853 days ago · 25 km deep · 92 km away
  55. 3.5152 km SE of Perryville, Alaska · 1853 days ago · 17 km deep · 77 km away
  56. 1.7Alaska Peninsula · 1852 days ago · 31 km deep · 61 km away
  57. 2.7144 km SE of Perryville, Alaska · 1852 days ago · 34 km deep · 45 km away
  58. 2.1144 km SE of Chignik, Alaska · 1852 days ago · 47 km deep · 46 km away
  59. 1.659 km SSE of Perryville, Alaska · 1851 days ago · 28 km deep · 73 km away
  60. 1.663 km SE of Perryville, Alaska · 1851 days ago · 25 km deep · 54 km away

The first 60 of 171.

Before

  1. 2.4194 km SE of Perryville, Alaska · 1862 days ago · 25 km deep · 99 km away
  2. 2.661 km SE of Perryville, Alaska · 1862 days ago · 10 km deep · 57 km away
  3. 2.8113 km SSE of Perryville, Alaska · 1863 days ago · 10 km deep · 81 km away
  4. 2.5125 km SE of Perryville, Alaska · 1863 days ago · 33 km deep · 37 km away
  5. 2.1134 km SE of Perryville, Alaska · 1863 days ago · 55 km deep · 41 km away
  6. 2.1129 km SSE of Perryville, Alaska · 1863 days ago · 25 km deep · 73 km away
  7. 1.9118 km SE of Chignik, Alaska · 1863 days ago · 18 km deep · 37 km away
  8. 2.7129 km SE of Chignik, Alaska · 1863 days ago · 13 km deep · 39 km away
  9. 2.8145 km SE of Perryville, Alaska · 1863 days ago · 21 km deep · 62 km away
  10. 3.0138 km SE of Perryville, Alaska · 1863 days ago · 5 km deep · 54 km away
  11. 2.3117 km E of Chignik, Alaska · 1864 days ago · 57 km deep · 90 km away
  12. 2.266 km SE of Perryville, Alaska · 1864 days ago · 15 km deep · 57 km away
  13. 2.5152 km SE of Perryville, Alaska · 1864 days ago · 23 km deep · 58 km away
  14. 2.7197 km SE of Chignik, Alaska · 1864 days ago · 5 km deep · 100 km away
  15. 3.0106 km SE of Perryville, Alaska · 1864 days ago · 12 km deep · 31 km away
  16. 3.0140 km SE of Perryville, Alaska · 1864 days ago · 26 km deep · 56 km away
  17. 2.467 km SE of Perryville, Alaska · 1864 days ago · 25 km deep · 56 km away
  18. 2.6182 km SE of Chignik, Alaska · 1864 days ago · 43 km deep · 98 km away
  19. 2.055 km SE of Perryville, Alaska · 1864 days ago · 3 km deep · 66 km away
  20. 2.2101 km SSE of Perryville, Alaska · 1864 days ago · 24 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021am3ut58. Read Thu, Sep 24, 2026, 8:47 AM UTC.