Alaska earthquakes

M4.1 earthquake 107 km SE of Perryville, Alaska

A magnitude 4.1 earthquake struck 107 km SE of Perryville, Alaska on Wed, Jul 28, 2021, 11:58 PM AKDT (07:58 UTC), 36 km (22 mi) below the surface.

A larger quake followed: M6.9 125 km SE 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
4.1 (mb), light
Local time
UTC
2021-07-29 07:58:51 UTC
Depth
35.8 km (22.2 mi), shallow
Epicenter
55.296° N, 157.838° 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.

Location uncertainty
About 2.1 km horizontally, 10.9 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
139°
Stations used
65

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 68 in the 30 days before it.

After

  1. 3.9142 km SE of Perryville, Alaska · 1885 days ago · 23 km deep · 36 km away
  2. 2.7104 km SSE of Perryville, Alaska · 1885 days ago · 10 km deep · 45 km away
  3. 3.0147 km SE of Chignik, Alaska · 1885 days ago · 24 km deep · 63 km away
  4. 4.1135 km SE of Chignik, Alaska · 1885 days ago · 27 km deep · 50 km away
  5. 4.6155 km SSE of Chignik, Alaska · 1885 days ago · 19 km deep · 55 km away
  6. 3.0106 km SE of Chignik, Alaska · 1885 days ago · 6 km deep · 59 km away
  7. 3.2100 km SE of Perryville, Alaska · 1885 days ago · 10 km deep · 6 km away
  8. 3.5199 km SE of Chignik, Alaska · 1885 days ago · 10 km deep · 95 km away
  9. 3.2Alaska Peninsula · 1885 days ago · 3 km deep · 41 km away
  10. 4.2145 km SE of Chignik, Alaska · 1885 days ago · 18 km deep · 62 km away
  11. 4.2149 km SE of Chignik, Alaska · 1885 days ago · 28 km deep · 65 km away
  12. 3.4147 km SE of Perryville, Alaska · 1885 days ago · 3 km deep · 52 km away
  13. 3.3122 km SE of Chignik, Alaska · 1885 days ago · 28 km deep · 38 km away
  14. 3.0117 km SSE of Perryville, Alaska · 1885 days ago · 24 km deep · 35 km away
  15. 3.8157 km SE of Chignik, Alaska · 1885 days ago · 6 km deep · 94 km away
  16. 3.3166 km SE of Chignik, Alaska · 1885 days ago · 23 km deep · 77 km away
  17. 2.6126 km SE of Perryville, Alaska · 1885 days ago · 27 km deep · 28 km away
  18. 3.5118 km SSE of Chignik, Alaska · 1885 days ago · 18 km deep · 34 km away
  19. 4.1149 km SSE of Chignik, Alaska · 1885 days ago · 26 km deep · 43 km away
  20. 2.7133 km SSE of Perryville, Alaska · 1885 days ago · 9 km deep · 61 km away
  21. 2.366 km SE of Perryville, Alaska · 1885 days ago · 10 km deep · 45 km away
  22. 3.8135 km SE of Perryville, Alaska · 1885 days ago · 20 km deep · 29 km away
  23. 3.8142 km SE of Perryville, Alaska · 1885 days ago · 24 km deep · 36 km away
  24. 3.4143 km SSE of Chignik, Alaska · 1885 days ago · 22 km deep · 41 km away
  25. 3.6174 km SE of Perryville, Alaska · 1885 days ago · 12 km deep · 67 km away
  26. 2.5100 km SSE of Perryville, Alaska · 1885 days ago · 11 km deep · 31 km away
  27. 3.3143 km SE of Perryville, Alaska · 1885 days ago · 28 km deep · 48 km away
  28. 2.8124 km SE of Chignik, Alaska · 1885 days ago · 27 km deep · 54 km away
  29. 3.4187 km SE of Perryville, Alaska · 1885 days ago · 37 km deep · 80 km away
  30. 3.5161 km SE of Chignik, Alaska · 1885 days ago · 1 km deep · 63 km away
  31. 4.7128 km SSE of Chignik, Alaska · 1885 days ago · 26 km deep · 25 km away
  32. 3.3101 km SE of Chignik, Alaska · 1885 days ago · 3 km deep · 61 km away
  33. 2.8134 km SE of Perryville, Alaska · 1885 days ago · 0 km deep · 27 km away
  34. 3.5124 km SE of Perryville, Alaska · 1885 days ago · 4 km deep · 18 km away
  35. 3.3113 km SE of Chignik, Alaska · 1885 days ago · 20 km deep · 74 km away
  36. 3.2145 km SE of Perryville, Alaska · 1885 days ago · 29 km deep · 38 km away
  37. 4.3164 km SE of Chignik, Alaska · 1885 days ago · 17 km deep · 97 km away
  38. 4.6148 km SE of Chignik, Alaska · 1885 days ago · 41 km deep · 59 km away
  39. 3.4140 km SE of Perryville, Alaska · 1885 days ago · 39 km deep · 33 km away
  40. 3.2166 km SSE of Chignik, Alaska · 1885 days ago · 25 km deep · 64 km away
  41. 3.0162 km SE of Chignik, Alaska · 1885 days ago · 21 km deep · 62 km away
  42. 3.3131 km SSE of Perryville, Alaska · 1885 days ago · 25 km deep · 61 km away
  43. 3.0102 km SSE of Perryville, Alaska · 1885 days ago · 24 km deep · 54 km away
  44. 2.9202 km SE of Perryville, Alaska · 1885 days ago · 24 km deep · 96 km away
  45. 3.2135 km SE of Chignik, Alaska · 1885 days ago · 15 km deep · 66 km away
  46. 3.3148 km SE of Perryville, Alaska · 1885 days ago · 6 km deep · 42 km away
  47. 3.8198 km SE of Perryville, Alaska · 1885 days ago · 24 km deep · 92 km away
  48. 2.595 km SE of Chignik, Alaska · 1885 days ago · 9 km deep · 50 km away
  49. 3.4166 km SE of Chignik, Alaska · 1885 days ago · 17 km deep · 74 km away
  50. 2.6139 km SE of Perryville, Alaska · 1885 days ago · 42 km deep · 42 km away
  51. 2.9145 km SE of Perryville, Alaska · 1885 days ago · 25 km deep · 39 km away
  52. 3.0125 km SE of Perryville, Alaska · 1885 days ago · 24 km deep · 19 km away
  53. 2.7155 km SE of Chignik, Alaska · 1885 days ago · 25 km deep · 56 km away
  54. 3.6139 km SE of Perryville, Alaska · 1885 days ago · 25 km deep · 32 km away
  55. 4.2131 km SSE of Chignik, Alaska · 1885 days ago · 25 km deep · 28 km away
  56. 3.2151 km SE of Chignik, Alaska · 1885 days ago · 25 km deep · 82 km away
  57. 2.188 km SE of Chignik, Alaska · 1885 days ago · 15 km deep · 52 km away
  58. 3.5126 km SSE of Chignik, Alaska · 1885 days ago · 14 km deep · 25 km away
  59. 2.6119 km SE of Perryville, Alaska · 1885 days ago · 33 km deep · 15 km away
  60. 2.6137 km ESE of Chignik, Alaska · 1885 days ago · 25 km deep · 96 km away

The first 60 of at least 201.

Before

  1. 3.9135 km SE of Perryville, Alaska · 1885 days ago · 26 km deep · 29 km away
  2. 3.7137 km SE of Chignik, Alaska · 1885 days ago · 25 km deep · 88 km away
  3. 3.6131 km SE of Perryville, Alaska · 1885 days ago · 69 km deep · 25 km away
  4. 4.4134 km SSE of Chignik, Alaska · 1885 days ago · 27 km deep · 32 km away
  5. 3.2Alaska Peninsula · 1885 days ago · 5 km deep · 35 km away
  6. 3.8122 km SSE of Perryville, Alaska · 1885 days ago · 10 km deep · 56 km away
  7. 2.8157 km SE of Perryville, Alaska · 1885 days ago · 40 km deep · 56 km away
  8. 3.0119 km SSE of Perryville, Alaska · 1885 days ago · 14 km deep · 47 km away
  9. 2.668 km S of Ivanof Bay, Alaska · 1885 days ago · 35 km deep · 93 km away
  10. 3.1165 km SE of Chignik, Alaska · 1885 days ago · 7 km deep · 71 km away
  11. 3.9160 km SE of Chignik, Alaska · 1885 days ago · 20 km deep · 94 km away
  12. 4.5154 km SE of Perryville, Alaska · 1885 days ago · 12 km deep · 48 km away · felt by 1
  13. 4.3164 km SE of Chignik, Alaska · 1885 days ago · 20 km deep · 73 km away
  14. 3.2106 km SSE of Perryville, Alaska · 1885 days ago · 8 km deep · 36 km away
  15. 4.1131 km SE of Chignik, Alaska · 1885 days ago · 34 km deep · 56 km away · felt by 1
  16. 3.9141 km SE of Chignik, Alaska · 1885 days ago · 25 km deep · 79 km away
  17. 3.4116 km SSE of Perryville, Alaska · 1885 days ago · 16 km deep · 33 km away
  18. 3.294 km SSE of Perryville, Alaska · 1885 days ago · 7 km deep · 39 km away
  19. 3.5167 km SE of Chignik, Alaska · 1885 days ago · 14 km deep · 93 km away
  20. 3.3154 km SE of Chignik, Alaska · 1885 days ago · 4 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f2g3. Read Sat, Sep 26, 2026, 3:23 AM UTC.