Alaska earthquakes

M3.5 earthquake 196 km SE of Chignik, Alaska

A magnitude 3.5 earthquake struck 196 km SE of Chignik, Alaska on Thu, Jul 29, 2021, 9:07 AM AKDT (17:07 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.6 181 km SE of Chignik, 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 17:07:24 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
55.264° N, 155.859° 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 8.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
225°, poorly surrounded by stations
Stations used
23

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 200 in the 60 days after this one and 125 in the 30 days before it.

After

  1. 2.4136 km SE of Chignik, Alaska · 1883 days ago · 10 km deep · 67 km away
  2. 4.2165 km SSW of Akhiok, Alaska · 1883 days ago · 15 km deep · 55 km away
  3. 4.0139 km SE of Chignik, Alaska · 1883 days ago · 24 km deep · 58 km away
  4. 2.7146 km SE of Chignik, Alaska · 1883 days ago · 19 km deep · 55 km away
  5. 3.1155 km SSE of Chignik, Alaska · 1883 days ago · 43 km deep · 79 km away
  6. 2.8138 km SE of Chignik, Alaska · 1883 days ago · 24 km deep · 58 km away
  7. 3.0168 km SE of Chignik, Alaska · 1883 days ago · 20 km deep · 59 km away
  8. 2.7132 km SE of Chignik, Alaska · 1883 days ago · 26 km deep · 65 km away
  9. 4.2143 km SE of Chignik, Alaska · 1883 days ago · 40 km deep · 57 km away
  10. 3.0138 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 73 km away
  11. 2.9141 km SE of Chignik, Alaska · 1883 days ago · 16 km deep · 59 km away
  12. 3.7145 km SE of Chignik, Alaska · 1883 days ago · 20 km deep · 75 km away
  13. 3.5154 km SE of Chignik, Alaska · 1883 days ago · 21 km deep · 65 km away
  14. 2.5160 km SE of Chignik, Alaska · 1883 days ago · 21 km deep · 43 km away
  15. 3.3south of Alaska · 1883 days ago · 33 km deep · 28 km away
  16. 3.5165 km SE of Chignik, Alaska · 1883 days ago · 6 km deep · 31 km away
  17. 3.1163 km SE of Chignik, Alaska · 1883 days ago · 20 km deep · 57 km away
  18. 5.0142 km SE of Chignik, Alaska · 1883 days ago · 29 km deep · 64 km away
  19. 5.4158 km SE of Chignik, Alaska · 1883 days ago · 21 km deep · 57 km away · felt by 1
  20. 3.2145 km SSE of Chignik, Alaska · 1883 days ago · 10 km deep · 86 km away
  21. 3.4161 km SE of Chignik, Alaska · 1883 days ago · 17 km deep · 70 km away
  22. 3.6192 km SSW of Akhiok, Alaska · 1883 days ago · 40 km deep · 22 km away
  23. 4.4153 km SSE of Chignik, Alaska · 1883 days ago · 24 km deep · 79 km away
  24. 2.8137 km SSE of Chignik, Alaska · 1883 days ago · 26 km deep · 90 km away
  25. 3.0186 km SSW of Akhiok, Alaska · 1883 days ago · 19 km deep · 29 km away
  26. 4.8150 km SSE of Chignik, Alaska · 1883 days ago · 1 km deep · 81 km away
  27. 2.7138 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 72 km away
  28. 3.9153 km SE of Chignik, Alaska · 1883 days ago · 13 km deep · 45 km away
  29. 4.0153 km SSE of Chignik, Alaska · 1883 days ago · 16 km deep · 79 km away
  30. 3.1169 km ESE of Chignik, Alaska · 1883 days ago · 35 km deep · 37 km away
  31. 2.9167 km SE of Chignik, Alaska · 1883 days ago · 37 km deep · 29 km away
  32. 2.9200 km SE of Chignik, Alaska · 1883 days ago · 40 km deep · 47 km away
  33. 2.8185 km SE of Perryville, Alaska · 1883 days ago · 34 km deep · 92 km away
  34. 4.2197 km ESE of Chignik, Alaska · 1883 days ago · 37 km deep · 17 km away
  35. 3.2149 km SE of Chignik, Alaska · 1883 days ago · 23 km deep · 48 km away
  36. 2.5128 km SE of Chignik, Alaska · 1883 days ago · 39 km deep · 81 km away
  37. 2.3130 km SSE of Chignik, Alaska · 1883 days ago · 53 km deep · 95 km away
  38. 3.6204 km SE of Chignik, Alaska · 1883 days ago · 34 km deep · 48 km away
  39. 2.8199 km SE of Chignik, Alaska · 1883 days ago · 33 km deep · 11 km away
  40. 3.2152 km SSE of Chignik, Alaska · 1883 days ago · 41 km deep · 82 km away
  41. 5.5140 km SE of Chignik, Alaska · 1883 days ago · 43 km deep · 70 km away · felt by 1
  42. 2.6160 km SSE of Chignik, Alaska · 1883 days ago · 37 km deep · 76 km away
  43. 3.2153 km SE of Chignik, Alaska · 1882 days ago · 35 km deep · 66 km away
  44. 2.7146 km SE of Chignik, Alaska · 1882 days ago · 19 km deep · 63 km away
  45. 2.5157 km SSE of Chignik, Alaska · 1882 days ago · 40 km deep · 77 km away
  46. 2.4125 km SE of Chignik, Alaska · 1882 days ago · 23 km deep · 71 km away
  47. 2.8171 km ESE of Chignik, Alaska · 1882 days ago · 39 km deep · 46 km away
  48. 3.8158 km SSE of Chignik, Alaska · 1882 days ago · 35 km deep · 81 km away
  49. 3.6154 km SE of Chignik, Alaska · 1882 days ago · 25 km deep · 50 km away
  50. 2.4147 km SE of Chignik, Alaska · 1882 days ago · 35 km deep · 66 km away
  51. 2.0112 km ESE of Chignik, Alaska · 1882 days ago · 19 km deep · 90 km away
  52. 2.5147 km SE of Perryville, Alaska · 1882 days ago · 37 km deep · 97 km away
  53. 2.4151 km SE of Perryville, Alaska · 1882 days ago · 39 km deep · 97 km away
  54. 3.7176 km SSW of Akhiok, Alaska · 1882 days ago · 35 km deep · 39 km away
  55. 2.5168 km SE of Chignik, Alaska · 1882 days ago · 47 km deep · 29 km away
  56. 4.4166 km SE of Chignik, Alaska · 1882 days ago · 47 km deep · 45 km away
  57. 4.1131 km SE of Chignik, Alaska · 1882 days ago · 27 km deep · 83 km away
  58. 3.5156 km SSE of Chignik, Alaska · 1882 days ago · 32 km deep · 76 km away
  59. 3.2158 km SE of Chignik, Alaska · 1882 days ago · 25 km deep · 72 km away
  60. 2.5123 km SE of Chignik, Alaska · 1882 days ago · 25 km deep · 73 km away

The first 60 of at least 200.

Before

  1. 3.3197 km SE of Perryville, Alaska · 1883 days ago · 25 km deep · 89 km away
  2. 2.5125 km SE of Chignik, Alaska · 1883 days ago · 10 km deep · 80 km away
  3. 3.0159 km ESE of Chignik, Alaska · 1883 days ago · 9 km deep · 51 km away
  4. 3.0152 km SE of Chignik, Alaska · 1883 days ago · 2 km deep · 52 km away
  5. 2.6151 km SE of Chignik, Alaska · 1883 days ago · 14 km deep · 54 km away
  6. 3.0163 km SSW of Akhiok, Alaska · 1883 days ago · 40 km deep · 51 km away
  7. 2.6157 km SSE of Chignik, Alaska · 1883 days ago · 26 km deep · 79 km away
  8. 5.3155 km SE of Chignik, Alaska · 1883 days ago · 36 km deep · 70 km away · tsunami flag
  9. 4.5185 km SSW of Akhiok, Alaska · 1883 days ago · 37 km deep · 30 km away
  10. 3.1164 km SE of Chignik, Alaska · 1883 days ago · 27 km deep · 32 km away
  11. 2.8199 km SE of Chignik, Alaska · 1883 days ago · 13 km deep · 44 km away
  12. 2.5144 km SSE of Chignik, Alaska · 1883 days ago · 2 km deep · 84 km away
  13. 3.6150 km SE of Chignik, Alaska · 1883 days ago · 23 km deep · 63 km away
  14. 2.6133 km SE of Chignik, Alaska · 1883 days ago · 17 km deep · 77 km away
  15. 2.9129 km SE of Chignik, Alaska · 1883 days ago · 4 km deep · 67 km away
  16. 2.7143 km SE of Chignik, Alaska · 1883 days ago · 17 km deep · 77 km away
  17. 3.6222 km SSW of Akhiok, Alaska · 1883 days ago · 20 km deep · 27 km away
  18. 2.8159 km SE of Chignik, Alaska · 1883 days ago · 34 km deep · 37 km away
  19. 3.0Alaska Peninsula · 1883 days ago · 17 km deep · 97 km away
  20. 2.8149 km SE of Perryville, Alaska · 1883 days ago · 14 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f0a4. Read Thu, Sep 24, 2026, 3:35 PM UTC.