Alaska earthquakes

M3.5 earthquake 199 km SE of Chignik, Alaska

A magnitude 3.5 earthquake struck 199 km SE of Chignik, Alaska on Thu, Jul 29, 2021, 12:13 AM AKDT (08:13 UTC), 10 km (6 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
3.5 (ml), minor
Local time
UTC
2021-07-29 08:13:35 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
54.827° N, 156.587° 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 7.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.16
Depth from
Operator assigned
Station coverage gap
230°, poorly surrounded by stations
Stations used
19

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 49 in the 30 days before it.

After

  1. 4.2145 km SE of Chignik, Alaska · 1883 days ago · 18 km deep · 57 km away
  2. 4.2149 km SE of Chignik, Alaska · 1883 days ago · 28 km deep · 54 km away
  3. 3.4147 km SE of Perryville, Alaska · 1883 days ago · 3 km deep · 78 km away
  4. 3.3122 km SE of Chignik, Alaska · 1883 days ago · 28 km deep · 77 km away
  5. 4.3172 km ESE of Chignik, Alaska · 1883 days ago · 23 km deep · 78 km away
  6. 3.8157 km SE of Chignik, Alaska · 1883 days ago · 6 km deep · 71 km away
  7. 3.3166 km SE of Chignik, Alaska · 1883 days ago · 23 km deep · 38 km away
  8. 2.6126 km SE of Perryville, Alaska · 1883 days ago · 27 km deep · 84 km away
  9. 3.5118 km SSE of Chignik, Alaska · 1883 days ago · 18 km deep · 81 km away
  10. 4.1149 km SSE of Chignik, Alaska · 1883 days ago · 26 km deep · 53 km away
  11. 3.8135 km SE of Perryville, Alaska · 1883 days ago · 20 km deep · 70 km away
  12. 3.8142 km SE of Perryville, Alaska · 1883 days ago · 24 km deep · 63 km away
  13. 3.4143 km SSE of Chignik, Alaska · 1883 days ago · 22 km deep · 57 km away
  14. 3.6174 km SE of Perryville, Alaska · 1883 days ago · 12 km deep · 28 km away
  15. 3.3143 km SE of Perryville, Alaska · 1883 days ago · 28 km deep · 79 km away
  16. 3.1215 km SE of Chignik, Alaska · 1883 days ago · 20 km deep · 62 km away
  17. 2.8124 km SE of Chignik, Alaska · 1883 days ago · 27 km deep · 79 km away
  18. 3.4187 km SE of Perryville, Alaska · 1883 days ago · 37 km deep · 28 km away
  19. 3.5161 km SE of Chignik, Alaska · 1883 days ago · 1 km deep · 38 km away
  20. 3.0173 km ESE of Chignik, Alaska · 1883 days ago · 39 km deep · 89 km away
  21. 4.7128 km SSE of Chignik, Alaska · 1883 days ago · 26 km deep · 74 km away
  22. 2.8134 km SE of Perryville, Alaska · 1883 days ago · 0 km deep · 69 km away
  23. 3.5124 km SE of Perryville, Alaska · 1883 days ago · 4 km deep · 79 km away
  24. 3.2145 km SE of Perryville, Alaska · 1883 days ago · 29 km deep · 58 km away
  25. 3.3184 km SSW of Akhiok, Alaska · 1883 days ago · 35 km deep · 95 km away
  26. 4.3164 km SE of Chignik, Alaska · 1883 days ago · 17 km deep · 66 km away
  27. 4.6148 km SE of Chignik, Alaska · 1883 days ago · 41 km deep · 52 km away
  28. 4.8195 km SSW of Akhiok, Alaska · 1883 days ago · 10 km deep · 90 km away
  29. 4.1222 km SE of Chignik, Alaska · 1883 days ago · 7 km deep · 70 km away
  30. 3.4140 km SE of Perryville, Alaska · 1883 days ago · 39 km deep · 64 km away
  31. 3.2166 km SSE of Chignik, Alaska · 1883 days ago · 25 km deep · 33 km away
  32. 3.0162 km SE of Chignik, Alaska · 1883 days ago · 21 km deep · 37 km away
  33. 2.9202 km SE of Perryville, Alaska · 1883 days ago · 24 km deep · 30 km away
  34. 3.2135 km SE of Chignik, Alaska · 1883 days ago · 15 km deep · 72 km away
  35. 3.3148 km SE of Perryville, Alaska · 1883 days ago · 6 km deep · 54 km away
  36. 3.8198 km SE of Perryville, Alaska · 1883 days ago · 24 km deep · 27 km away
  37. 3.4166 km SE of Chignik, Alaska · 1883 days ago · 17 km deep · 36 km away
  38. 2.9187 km SSW of Akhiok, Alaska · 1883 days ago · 33 km deep · 93 km away
  39. 2.6139 km SE of Perryville, Alaska · 1883 days ago · 42 km deep · 79 km away
  40. 2.9145 km SE of Perryville, Alaska · 1883 days ago · 25 km deep · 59 km away
  41. 3.0125 km SE of Perryville, Alaska · 1883 days ago · 24 km deep · 78 km away
  42. 2.7155 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 44 km away
  43. 3.6139 km SE of Perryville, Alaska · 1883 days ago · 25 km deep · 65 km away
  44. 4.2131 km SSE of Chignik, Alaska · 1883 days ago · 25 km deep · 71 km away
  45. 3.2151 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 66 km away
  46. 3.5126 km SSE of Chignik, Alaska · 1883 days ago · 14 km deep · 76 km away
  47. 2.6168 km ESE of Chignik, Alaska · 1883 days ago · 6 km deep · 96 km away
  48. 2.6119 km SE of Perryville, Alaska · 1883 days ago · 33 km deep · 85 km away
  49. 2.6137 km ESE of Chignik, Alaska · 1883 days ago · 25 km deep · 96 km away
  50. 3.5148 km SSE of Chignik, Alaska · 1883 days ago · 27 km deep · 53 km away
  51. 3.5131 km SE of Perryville, Alaska · 1883 days ago · 26 km deep · 71 km away
  52. 3.0149 km SSE of Chignik, Alaska · 1883 days ago · 16 km deep · 52 km away
  53. 3.2137 km SE of Chignik, Alaska · 1883 days ago · 26 km deep · 67 km away
  54. 2.7164 km ESE of Chignik, Alaska · 1883 days ago · 20 km deep · 83 km away
  55. 2.6153 km SSE of Chignik, Alaska · 1883 days ago · 22 km deep · 47 km away
  56. 2.6146 km ESE of Chignik, Alaska · 1883 days ago · 13 km deep · 90 km away
  57. 2.9214 km SE of Chignik, Alaska · 1883 days ago · 3 km deep · 65 km away
  58. 3.4136 km SE of Perryville, Alaska · 1883 days ago · 1 km deep · 68 km away
  59. 3.5126 km SE of Chignik, Alaska · 1883 days ago · 11 km deep · 86 km away
  60. 3.7135 km SE of Perryville, Alaska · 1883 days ago · 36 km deep · 70 km away

The first 60 of at least 201.

Before

  1. 3.0106 km SE of Chignik, Alaska · 1883 days ago · 6 km deep · 98 km away
  2. 4.6155 km SSE of Chignik, Alaska · 1883 days ago · 19 km deep · 44 km away
  3. 4.1135 km SE of Chignik, Alaska · 1883 days ago · 27 km deep · 64 km away
  4. 3.0147 km SE of Chignik, Alaska · 1883 days ago · 24 km deep · 55 km away
  5. 3.9142 km SE of Perryville, Alaska · 1883 days ago · 23 km deep · 61 km away
  6. 4.1107 km SE of Perryville, Alaska · 1883 days ago · 36 km deep · 95 km away
  7. 3.9135 km SE of Perryville, Alaska · 1883 days ago · 26 km deep · 69 km away
  8. 3.7137 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 88 km away
  9. 3.6131 km SE of Perryville, Alaska · 1883 days ago · 69 km deep · 71 km away
  10. 4.4134 km SSE of Chignik, Alaska · 1883 days ago · 27 km deep · 67 km away
  11. 3.2Alaska Peninsula · 1883 days ago · 5 km deep · 66 km away
  12. 2.8157 km SE of Perryville, Alaska · 1883 days ago · 40 km deep · 62 km away
  13. 3.1165 km SE of Chignik, Alaska · 1883 days ago · 7 km deep · 36 km away
  14. 3.9160 km SE of Chignik, Alaska · 1883 days ago · 20 km deep · 67 km away
  15. 4.5154 km SE of Perryville, Alaska · 1883 days ago · 12 km deep · 53 km away · felt by 1
  16. 4.3164 km SE of Chignik, Alaska · 1883 days ago · 20 km deep · 39 km away
  17. 3.5180 km SE of Chignik, Alaska · 1883 days ago · 41 km deep · 52 km away
  18. 4.1131 km SE of Chignik, Alaska · 1883 days ago · 34 km deep · 71 km away · felt by 1
  19. 3.9141 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 75 km away
  20. 3.5167 km SE of Chignik, Alaska · 1883 days ago · 14 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f43d. Read Thu, Sep 24, 2026, 4:07 PM UTC.