Alaska earthquakes

M3.6 earthquake 47 km SE of Adak, Alaska

A magnitude 3.6 earthquake struck 47 km SE of Adak, Alaska on Mon, Jul 26, 2021, 12:47 AM HADT (09:47 UTC), 48 km (30 mi) below the surface.

A larger quake followed: M4.0 87 km S of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
3.6 (mb), minor
Local time
UTC
2021-07-26 09:47:11 UTC
Depth
47.7 km (29.6 mi), shallow
Epicenter
51.541° N, 176.195° 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 9.7 km horizontally, 10.1 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
151°
Stations used
37

Nearby

Within 100 km, magnitude 1.5 and up: 193 in the 60 days after this one and 113 in the 30 days before it.

After

  1. 1.978 km ENE of Adak, Alaska · 1886 days ago · 166 km deep · 85 km away
  2. 4.087 km S of Adak, Alaska · 1886 days ago · 10 km deep · 57 km away
  3. 3.889 km S of Adak, Alaska · 1886 days ago · 16 km deep · 56 km away
  4. 3.079 km ENE of Adak, Alaska · 1886 days ago · 191 km deep · 88 km away
  5. 1.966 km WSW of Adak, Alaska · 1886 days ago · 75 km deep · 96 km away
  6. 3.892 km S of Adak, Alaska · 1886 days ago · 14 km deep · 58 km away
  7. 3.988 km S of Adak, Alaska · 1886 days ago · 23 km deep · 54 km away
  8. 2.045 km WSW of Adak, Alaska · 1886 days ago · 70 km deep · 70 km away
  9. 1.650 km ENE of Adak, Alaska · 1886 days ago · 148 km deep · 63 km away
  10. 1.587 km S of Adak, Alaska · 1885 days ago · 39 km deep · 53 km away
  11. 1.776 km ENE of Adak, Alaska · 1885 days ago · 179 km deep · 76 km away
  12. 1.570 km S of Adak, Alaska · 1885 days ago · 21 km deep · 42 km away
  13. 1.715 km E of Adak, AK · 1885 days ago · 76 km deep · 38 km away
  14. 3.035 km S of Adak, Alaska · 1885 days ago · 46 km deep · 25 km away
  15. 1.860 km SE of Adak, Alaska · 1884 days ago · 26 km deep · 15 km away
  16. 3.344 km NNE of Adak, Alaska · 1884 days ago · 211 km deep · 83 km away
  17. 1.9100 km SSE of Adak, Alaska · 1884 days ago · 14 km deep · 61 km away
  18. 3.044 km SSW of Adak, Alaska · 1884 days ago · 70 km deep · 49 km away
  19. 1.837 km ENE of Adak, Alaska · 1883 days ago · 147 km deep · 55 km away
  20. 1.550 km WSW of Adak, Alaska · 1883 days ago · 74 km deep · 84 km away
  21. 1.781 km SW of Adak, Alaska · 1883 days ago · 25 km deep · 92 km away
  22. 1.682 km ENE of Adak, Alaska · 1883 days ago · 13 km deep · 79 km away
  23. 1.643 km S of Adak, Alaska · 1883 days ago · 26 km deep · 28 km away
  24. 3.172 km ENE of Adak, Alaska · 1883 days ago · 98 km deep · 72 km away
  25. 2.055 km ENE of Adak, Alaska · 1882 days ago · 179 km deep · 58 km away
  26. 1.519 km WNW of Adak, Alaska · 1882 days ago · 86 km deep · 66 km away
  27. 3.563 km SE of Adak, Alaska · 1882 days ago · 35 km deep · 16 km away
  28. 1.954 km ENE of Adak, Alaska · 1882 days ago · 211 km deep · 64 km away
  29. 1.685 km WSW of Atka, Alaska · 1882 days ago · 78 km deep · 73 km away
  30. 2.896 km SW of Atka, Alaska · 1882 days ago · 35 km deep · 71 km away
  31. 1.568 km SSW of Adak, Alaska · 1882 days ago · 42 km deep · 68 km away
  32. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1882 days ago · 29 km deep · 14 km away
  33. 1.666 km SE of Adak, Alaska · 1882 days ago · 26 km deep · 20 km away
  34. 2.066 km NE of Adak, Alaska · 1881 days ago · 217 km deep · 89 km away
  35. 3.054 km ESE of Adak, Alaska · 1881 days ago · 42 km deep · 22 km away
  36. 1.638 km SW of Adak, Alaska · 1880 days ago · 27 km deep · 58 km away
  37. 1.897 km S of Adak, Alaska · 1880 days ago · 26 km deep · 72 km away
  38. 1.578 km SSE of Adak, Alaska · 1880 days ago · 19 km deep · 38 km away
  39. 1.749 km S of Adak, Alaska · 1880 days ago · 30 km deep · 28 km away
  40. 1.658 km SE of Adak, Alaska · 1880 days ago · 26 km deep · 10 km away
  41. 3.517 km SE of Adak, Alaska · 1879 days ago · 69 km deep · 32 km away
  42. 3.244 km SSE of Adak, Alaska · 1879 days ago · 44 km deep · 16 km away
  43. 1.560 km SSW of Adak, Alaska · 1879 days ago · 36 km deep · 62 km away
  44. 1.546 km WSW of Adak, Alaska · 1878 days ago · 75 km deep · 75 km away
  45. 1.694 km SW of Adak, Alaska · 1878 days ago · 23 km deep · 99 km away
  46. 1.520 km SSW of Adak, Alaska · 1878 days ago · 74 km deep · 44 km away
  47. 1.559 km SE of Adak, Alaska · 1877 days ago · 23 km deep · 12 km away
  48. 1.677 km SW of Adak, Alaska · 1877 days ago · 29 km deep · 93 km away
  49. 1.765 km SE of Adak, Alaska · 1877 days ago · 24 km deep · 19 km away
  50. 3.672 km SE of Adak, Alaska · 1876 days ago · 30 km deep · 25 km away
  51. 1.565 km SSE of Adak, Alaska · 1876 days ago · 20 km deep · 20 km away
  52. 2.874 km SW of Adak, Alaska · 1875 days ago · 61 km deep · 85 km away
  53. 1.969 km SE of Adak, Alaska · 1875 days ago · 39 km deep · 22 km away
  54. 1.545 km SSW of Adak, Alaska · 1875 days ago · 63 km deep · 53 km away
  55. 1.9123 km SSW of Atka, Alaska · 1874 days ago · 26 km deep · 81 km away
  56. 2.0120 km SSW of Atka, Alaska · 1874 days ago · 21 km deep · 79 km away
  57. 3.072 km ESE of Adak, Alaska · 1874 days ago · 62 km deep · 39 km away
  58. 1.867 km WSW of Atka, Alaska · 1874 days ago · 69 km deep · 88 km away
  59. 1.646 km SW of Adak, Alaska · 1874 days ago · 48 km deep · 62 km away
  60. 2.6112 km SSW of Atka, Alaska · 1873 days ago · 11 km deep · 100 km away

The first 60 of 193.

Before

  1. 2.172 km S of Adak, Alaska · 1887 days ago · 26 km deep · 44 km away
  2. 1.773 km SSE of Adak, Alaska · 1887 days ago · 25 km deep · 34 km away
  3. 2.776 km S of Adak, Alaska · 1887 days ago · 20 km deep · 47 km away
  4. 3.869 km S of Adak, Alaska · 1887 days ago · 35 km deep · 38 km away
  5. 2.856 km E of Adak, Alaska · 1887 days ago · 67 km deep · 41 km away
  6. 2.291 km ESE of Adak, Alaska · 1887 days ago · 45 km deep · 62 km away
  7. 2.063 km WSW of Adak, Alaska · 1888 days ago · 65 km deep · 88 km away
  8. 2.370 km S of Adak, Alaska · 1888 days ago · 21 km deep · 41 km away
  9. 1.585 km S of Adak, Alaska · 1888 days ago · 17 km deep · 52 km away
  10. 1.568 km SW of Atka, Alaska · 1888 days ago · 28 km deep · 95 km away
  11. 2.190 km SW of Atka, Alaska · 1888 days ago · 42 km deep · 71 km away
  12. 4.177 km S of Adak, Alaska · 1888 days ago · 29 km deep · 43 km away
  13. 1.986 km S of Adak, Alaska · 1888 days ago · 26 km deep · 52 km away
  14. 3.662 km S of Adak, Alaska · 1888 days ago · 55 km deep · 34 km away
  15. 2.267 km S of Adak, Alaska · 1888 days ago · 21 km deep · 39 km away
  16. 4.074 km S of Adak, Alaska · 1888 days ago · 35 km deep · 40 km away
  17. 3.238 km ENE of Adak, Alaska · 1888 days ago · 146 km deep · 54 km away
  18. 1.553 km S of Adak, Alaska · 1888 days ago · 25 km deep · 34 km away
  19. 1.867 km ENE of Adak, Alaska · 1889 days ago · 147 km deep · 65 km away
  20. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1889 days ago · 63 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f0np. Read Thu, Sep 24, 2026, 1:38 PM UTC.