Alaska earthquakes

M1.7 earthquake 56 km E of Adak, Alaska

A magnitude 1.7 earthquake struck 56 km E of Adak, Alaska on Sun, Apr 18, 2021, 9:24 AM HADT (18:24 UTC), 71 km (44 mi) below the surface.

A larger quake followed: M4.2 46 km SW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.7 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2021-04-18 18:24:07 UTC
Depth
71.0 km (44.1 mi), intermediate-depth
Epicenter
51.885° N, 175.817° 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.

Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 73 in the 30 days before it.

After

  1. 1.663 km S of Adak, Alaska · 1993 days ago · 25 km deep · 92 km away
  2. 1.737 km SSE of Adak, Alaska · 1992 days ago · 57 km deep · 62 km away
  3. 1.861 km SSE of Adak, Alaska · 1992 days ago · 22 km deep · 62 km away
  4. 1.681 km SE of Adak, Alaska · 1992 days ago · 25 km deep · 56 km away
  5. 2.6102 km ESE of Adak, Alaska · 1992 days ago · 35 km deep · 56 km away
  6. 1.9121 km SSW of Atka, Alaska · 1992 days ago · 8 km deep · 94 km away
  7. 1.855 km SSE of Adak, Alaska · 1992 days ago · 21 km deep · 59 km away
  8. 1.741 km SSE of Adak, Alaska · 1992 days ago · 33 km deep · 53 km away
  9. 1.552 km SW of Adak, Alaska · 1992 days ago · 43 km deep · 98 km away
  10. 1.861 km SSE of Adak, Alaska · 1991 days ago · 16 km deep · 57 km away
  11. 2.454 km ENE of Adak, Alaska · 1990 days ago · 197 km deep · 21 km away
  12. 1.683 km SW of Atka, Alaska · 1990 days ago · 26 km deep · 47 km away
  13. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1990 days ago · 69 km deep · 16 km away
  14. 3.7106 km ESE of Adak, Alaska · 1989 days ago · 35 km deep · 60 km away
  15. 1.560 km SSW of Adak, Alaska · 1989 days ago · 26 km deep · 97 km away
  16. 1.834 km ENE of Adak, Alaska · 1989 days ago · 11 km deep · 32 km away
  17. 2.232 km NE of Adak, Alaska · 1989 days ago · 9 km deep · 40 km away
  18. 2.635 km NE of Adak, Alaska · 1989 days ago · 10 km deep · 35 km away
  19. 2.547 km SW of Adak, Alaska · 1988 days ago · 24 km deep · 98 km away
  20. 1.766 km SW of Atka, Alaska · 1988 days ago · 63 km deep · 60 km away
  21. 3.893 km ESE of Adak, Alaska · 1988 days ago · 50 km deep · 41 km away
  22. 1.950 km S of Adak, Alaska · 1987 days ago · 25 km deep · 71 km away
  23. 1.771 km SW of Atka, Alaska · 1987 days ago · 38 km deep · 54 km away
  24. 2.5Andreanof Islands, Aleutian Islands, Alaska · 1986 days ago · 35 km deep · 56 km away
  25. 2.881 km SE of Adak, Alaska · 1986 days ago · 33 km deep · 49 km away
  26. 2.057 km SSE of Adak, Alaska · 1986 days ago · 27 km deep · 56 km away
  27. 2.256 km WNW of Atka, Alaska · 1985 days ago · 78 km deep · 77 km away
  28. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1985 days ago · 6 km deep · 99 km away
  29. 1.860 km SE of Adak, Alaska · 1984 days ago · 26 km deep · 54 km away
  30. 1.943 km SSW of Atka, Alaska · 1984 days ago · 44 km deep · 100 km away
  31. 1.746 km ENE of Adak, Alaska · 1984 days ago · 8 km deep · 25 km away
  32. 1.849 km S of Adak, Alaska · 1984 days ago · 25 km deep · 71 km away
  33. 2.041 km SSE of Adak, Alaska · 1984 days ago · 36 km deep · 56 km away
  34. 2.869 km ENE of Adak, Alaska · 1983 days ago · 82 km deep · 21 km away
  35. 2.145 km E of Adak, Alaska · 1983 days ago · 127 km deep · 12 km away
  36. 2.264 km SSE of Adak, Alaska · 1983 days ago · 23 km deep · 78 km away
  37. 1.8119 km SSW of Atka, Alaska · 1982 days ago · 7 km deep · 89 km away
  38. 1.643 km S of Adak, Alaska · 1982 days ago · 44 km deep · 67 km away
  39. 1.727 km ESE of Adak, Alaska · 1982 days ago · 98 km deep · 34 km away
  40. 3.856 km NE of Adak, Alaska · 1981 days ago · 155 km deep · 50 km away
  41. 3.6100 km SW of Atka, Alaska · 1978 days ago · 35 km deep · 57 km away
  42. 1.849 km SE of Adak, Alaska · 1977 days ago · 30 km deep · 48 km away
  43. 1.599 km SW of Atka, Alaska · 1969 days ago · 26 km deep · 58 km away
  44. 1.934 km ENE of Adak, Alaska · 1968 days ago · 132 km deep · 24 km away
  45. 3.199 km ESE of Adak, Alaska · 1968 days ago · 35 km deep · 50 km away
  46. 2.955 km SW of Atka, Alaska · 1967 days ago · 51 km deep · 74 km away
  47. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1967 days ago · 29 km deep · 22 km away
  48. 1.652 km SW of Adak, Alaska · 1967 days ago · 45 km deep · 100 km away
  49. 3.831 km SSE of Adak, Alaska · 1967 days ago · 50 km deep · 49 km away
  50. 2.579 km WSW of Atka, Alaska · 1966 days ago · 57 km deep · 45 km away
  51. 1.957 km SSE of Adak, Alaska · 1965 days ago · 26 km deep · 60 km away
  52. 1.539 km NE of Adak, Alaska · 1956 days ago · 10 km deep · 36 km away
  53. 1.637 km NE of Adak, Alaska · 1956 days ago · 10 km deep · 38 km away
  54. 1.638 km NE of Adak, Alaska · 1955 days ago · 8 km deep · 38 km away
  55. 2.984 km E of Adak, Alaska · 1955 days ago · 238 km deep · 28 km away
  56. 2.744 km E of Adak, Alaska · 1952 days ago · 69 km deep · 14 km away
  57. 4.246 km SW of Adak, Alaska · 1951 days ago · 48 km deep · 95 km away
  58. 2.039 km ESE of Adak, Alaska · 1950 days ago · 62 km deep · 20 km away
  59. 2.042 km SW of Atka, Alaska · 1950 days ago · 55 km deep · 81 km away
  60. 2.873 km ESE of Adak, Alaska · 1939 days ago · 70 km deep · 23 km away

The first 60 of 62.

Before

  1. 1.678 km E of Adak, Alaska · 1993 days ago · 71 km deep · 22 km away
  2. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1993 days ago · 39 km deep · 68 km away
  3. 1.575 km SSE of Adak, Alaska · 1993 days ago · 26 km deep · 76 km away
  4. 2.182 km E of Adak, Alaska · 1993 days ago · 116 km deep · 28 km away
  5. 1.767 km SSE of Adak, Alaska · 1994 days ago · 12 km deep · 72 km away
  6. 1.552 km SSW of Adak, Alaska · 1994 days ago · 36 km deep · 96 km away
  7. 1.555 km SSW of Adak, Alaska · 1994 days ago · 19 km deep · 91 km away
  8. 3.898 km SSE of Adak, Alaska · 1994 days ago · 10 km deep · 89 km away
  9. 1.662 km SSE of Adak, Alaska · 1994 days ago · 22 km deep · 61 km away
  10. 1.548 km SSE of Adak, Alaska · 1994 days ago · 23 km deep · 52 km away
  11. 1.633 km SSW of Adak, Alaska · 1994 days ago · 51 km deep · 79 km away
  12. 2.874 km ESE of Adak, Alaska · 1994 days ago · 35 km deep · 41 km away
  13. 1.575 km ESE of Adak, Alaska · 1995 days ago · 29 km deep · 34 km away
  14. 2.525 km SE of Adak, Alaska · 1995 days ago · 78 km deep · 42 km away
  15. 1.734 km NE of Adak, Alaska · 1995 days ago · 129 km deep · 34 km away
  16. 2.753 km SSW of Adak, Alaska · 1996 days ago · 36 km deep · 97 km away
  17. 3.149 km SW of Atka, Alaska · 1996 days ago · 10 km deep · 72 km away
  18. 1.719 km SW of Adak, Alaska · 1996 days ago · 11 km deep · 72 km away
  19. 2.350 km ENE of Adak, Alaska · 1997 days ago · 183 km deep · 28 km away
  20. 2.241 km E of Adak, Alaska · 1997 days ago · 75 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0214ywwfz6. Read Fri, Oct 2, 2026, 3:52 PM UTC.