Alaska earthquakes

M4.2 earthquake 165 km SSW of Akhiok, Alaska

A magnitude 4.2 earthquake struck 165 km SSW of Akhiok, Alaska on Thu, Jul 29, 2021, 9:27 AM AKDT (17:27 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.7 142 km S of Akhiok, 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
4.2 (ml), light
Local time
UTC
2021-07-29 17:27:13 UTC
Depth
15.3 km (9.5 mi), shallow
Epicenter
55.563° N, 155.157° 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 5.5 km horizontally, 9.8 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
205°, poorly surrounded by stations
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 151 in the 60 days after this one and 47 in the 30 days before it.

After

  1. 4.0139 km SE of Chignik, Alaska · 1883 days ago · 24 km deep · 96 km away
  2. 2.7146 km SE of Chignik, Alaska · 1883 days ago · 19 km deep · 98 km away
  3. 2.8138 km SE of Chignik, Alaska · 1883 days ago · 24 km deep · 94 km away
  4. 4.2143 km SE of Chignik, Alaska · 1883 days ago · 40 km deep · 100 km away
  5. 2.5160 km SE of Chignik, Alaska · 1883 days ago · 21 km deep · 90 km away
  6. 3.3south of Alaska · 1883 days ago · 33 km deep · 34 km away
  7. 3.5165 km SE of Chignik, Alaska · 1883 days ago · 6 km deep · 75 km away
  8. 3.6192 km SSW of Akhiok, Alaska · 1883 days ago · 40 km deep · 38 km away
  9. 3.0186 km SSW of Akhiok, Alaska · 1883 days ago · 19 km deep · 29 km away
  10. 3.9153 km SE of Chignik, Alaska · 1883 days ago · 13 km deep · 86 km away
  11. 3.1169 km ESE of Chignik, Alaska · 1883 days ago · 35 km deep · 54 km away
  12. 2.9167 km SE of Chignik, Alaska · 1883 days ago · 37 km deep · 66 km away
  13. 4.2197 km ESE of Chignik, Alaska · 1883 days ago · 37 km deep · 39 km away
  14. 3.2149 km SE of Chignik, Alaska · 1883 days ago · 23 km deep · 87 km away
  15. 2.8199 km SE of Chignik, Alaska · 1882 days ago · 33 km deep · 45 km away
  16. 2.0135 km SW of Akhiok, Alaska · 1882 days ago · 33 km deep · 90 km away
  17. 2.4125 km SE of Chignik, Alaska · 1882 days ago · 23 km deep · 100 km away
  18. 2.8171 km ESE of Chignik, Alaska · 1882 days ago · 39 km deep · 48 km away
  19. 3.6154 km SE of Chignik, Alaska · 1882 days ago · 25 km deep · 97 km away
  20. 3.7176 km SSW of Akhiok, Alaska · 1882 days ago · 35 km deep · 34 km away
  21. 2.5168 km SE of Chignik, Alaska · 1882 days ago · 47 km deep · 66 km away
  22. 4.4166 km SE of Chignik, Alaska · 1882 days ago · 47 km deep · 97 km away
  23. 2.5147 km SE of Chignik, Alaska · 1882 days ago · 39 km deep · 99 km away
  24. 3.0195 km ESE of Chignik, Alaska · 1882 days ago · 36 km deep · 41 km away
  25. 2.7167 km SE of Chignik, Alaska · 1882 days ago · 39 km deep · 68 km away
  26. 2.5137 km SE of Chignik, Alaska · 1882 days ago · 45 km deep · 89 km away
  27. 3.0153 km SE of Chignik, Alaska · 1882 days ago · 20 km deep · 96 km away
  28. 2.6189 km ESE of Chignik, Alaska · 1882 days ago · 47 km deep · 38 km away
  29. 3.3149 km ESE of Chignik, Alaska · 1882 days ago · 4 km deep · 70 km away
  30. 2.5163 km ESE of Chignik, Alaska · 1882 days ago · 44 km deep · 56 km away
  31. 2.9171 km ESE of Chignik, Alaska · 1882 days ago · 47 km deep · 55 km away
  32. 2.3173 km ESE of Chignik, Alaska · 1882 days ago · 41 km deep · 46 km away
  33. 3.8168 km ESE of Chignik, Alaska · 1882 days ago · 34 km deep · 59 km away
  34. 3.1138 km S of Akhiok, Alaska · 1882 days ago · 10 km deep · 46 km away
  35. 4.7142 km S of Akhiok, Alaska · 1882 days ago · 12 km deep · 46 km away · tsunami flag
  36. 3.6179 km ESE of Chignik, Alaska · 1882 days ago · 33 km deep · 44 km away
  37. 3.3176 km ESE of Chignik, Alaska · 1882 days ago · 7 km deep · 44 km away
  38. 2.0164 km ESE of Chignik, Alaska · 1882 days ago · 16 km deep · 54 km away
  39. 2.4209 km SE of Chignik, Alaska · 1882 days ago · 16 km deep · 49 km away
  40. 3.2south of Alaska · 1881 days ago · 36 km deep · 37 km away
  41. 2.3137 km SE of Chignik, Alaska · 1881 days ago · 34 km deep · 89 km away
  42. 3.0175 km SSW of Akhiok, Alaska · 1881 days ago · 35 km deep · 30 km away
  43. 3.1171 km SSW of Akhiok, Alaska · 1881 days ago · 35 km deep · 37 km away
  44. 2.3202 km SSW of Akhiok, Alaska · 1881 days ago · 20 km deep · 39 km away
  45. 2.1166 km SW of Akhiok, Alaska · 1881 days ago · 34 km deep · 45 km away
  46. 4.5162 km ESE of Chignik, Alaska · 1881 days ago · 37 km deep · 57 km away
  47. 1.8160 km ESE of Chignik, Alaska · 1881 days ago · 3 km deep · 60 km away
  48. 2.1177 km SE of Chignik, Alaska · 1881 days ago · 37 km deep · 64 km away
  49. 4.2130 km ESE of Chignik, Alaska · 1881 days ago · 39 km deep · 93 km away
  50. 2.5172 km SSW of Akhiok, Alaska · 1881 days ago · 47 km deep · 33 km away
  51. 2.4158 km SE of Chignik, Alaska · 1881 days ago · 47 km deep · 85 km away
  52. 2.1170 km ESE of Chignik, Alaska · 1881 days ago · 47 km deep · 48 km away
  53. 2.2139 km SE of Chignik, Alaska · 1880 days ago · 42 km deep · 94 km away
  54. 2.9161 km SE of Chignik, Alaska · 1880 days ago · 40 km deep · 75 km away
  55. 4.3206 km SSW of Akhiok, Alaska · 1880 days ago · 34 km deep · 46 km away
  56. 1.9130 km ESE of Chignik, Alaska · 1880 days ago · 42 km deep · 92 km away
  57. 2.3158 km ESE of Chignik, Alaska · 1880 days ago · 39 km deep · 61 km away
  58. 2.6170 km SE of Chignik, Alaska · 1880 days ago · 38 km deep · 76 km away
  59. 2.8163 km SE of Chignik, Alaska · 1880 days ago · 42 km deep · 74 km away
  60. 2.6145 km ESE of Chignik, Alaska · 1880 days ago · 10 km deep · 76 km away

The first 60 of 151.

Before

  1. 3.5196 km SE of Chignik, Alaska · 1883 days ago · 35 km deep · 55 km away
  2. 3.0159 km ESE of Chignik, Alaska · 1883 days ago · 9 km deep · 59 km away
  3. 3.0152 km SE of Chignik, Alaska · 1883 days ago · 2 km deep · 99 km away
  4. 3.0163 km SSW of Akhiok, Alaska · 1883 days ago · 40 km deep · 26 km away
  5. 4.5185 km SSW of Akhiok, Alaska · 1883 days ago · 37 km deep · 38 km away
  6. 3.1164 km SE of Chignik, Alaska · 1883 days ago · 27 km deep · 70 km away
  7. 2.8199 km SE of Chignik, Alaska · 1883 days ago · 13 km deep · 99 km away
  8. 2.9129 km SE of Chignik, Alaska · 1883 days ago · 4 km deep · 99 km away
  9. 3.6222 km SSW of Akhiok, Alaska · 1883 days ago · 20 km deep · 57 km away
  10. 2.8159 km SE of Chignik, Alaska · 1883 days ago · 34 km deep · 73 km away
  11. 2.8141 km SE of Chignik, Alaska · 1883 days ago · 13 km deep · 97 km away
  12. 3.0186 km SE of Chignik, Alaska · 1883 days ago · 41 km deep · 97 km away
  13. 3.0204 km SSW of Akhiok, Alaska · 1883 days ago · 37 km deep · 42 km away
  14. 2.6134 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 91 km away
  15. 3.7182 km SSW of Akhiok, Alaska · 1883 days ago · 7 km deep · 33 km away
  16. 4.5164 km ESE of Chignik, Alaska · 1883 days ago · 28 km deep · 54 km away
  17. 2.9169 km SW of Akhiok, Alaska · 1883 days ago · 24 km deep · 45 km away
  18. 3.6137 km SE of Chignik, Alaska · 1883 days ago · 25 km deep · 89 km away
  19. 2.9214 km SE of Chignik, Alaska · 1883 days ago · 3 km deep · 60 km away
  20. 2.6146 km ESE of Chignik, Alaska · 1883 days ago · 13 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f0a9. Read Thu, Sep 24, 2026, 2:36 PM UTC.