Alaska earthquakes

M1.8 earthquake 61 km SSE of Adak, Alaska

A magnitude 1.8 earthquake struck 61 km SSE of Adak, Alaska on Sun, Apr 18, 2021, 9:49 PM HADT (06:49 UTC), 22 km (14 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
1.8 (ml), micro
Local time
UTC
2021-04-19 06:49:23 UTC
Depth
22.0 km (13.7 mi), shallow
Epicenter
51.387° N, 176.221° 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
26

Nearby

Within 100 km, magnitude 1.5 and up: 67 in the 60 days after this one and 83 in the 30 days before it.

After

  1. 1.681 km SE of Adak, Alaska · 1986 days ago · 25 km deep · 32 km away
  2. 2.6102 km ESE of Adak, Alaska · 1986 days ago · 35 km deep · 67 km away
  3. 1.9121 km SSW of Atka, Alaska · 1986 days ago · 8 km deep · 88 km away
  4. 1.855 km SSE of Adak, Alaska · 1986 days ago · 21 km deep · 6 km away
  5. 1.741 km SSE of Adak, Alaska · 1986 days ago · 33 km deep · 20 km away
  6. 1.552 km SW of Adak, Alaska · 1986 days ago · 43 km deep · 61 km away
  7. 1.861 km SSE of Adak, Alaska · 1985 days ago · 16 km deep · 5 km away
  8. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1985 days ago · 34 km deep · 80 km away
  9. 2.454 km ENE of Adak, Alaska · 1984 days ago · 197 km deep · 79 km away
  10. 1.683 km SW of Atka, Alaska · 1984 days ago · 26 km deep · 83 km away
  11. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1984 days ago · 69 km deep · 47 km away
  12. 3.7106 km ESE of Adak, Alaska · 1983 days ago · 35 km deep · 69 km away
  13. 1.560 km SSW of Adak, Alaska · 1983 days ago · 26 km deep · 51 km away
  14. 1.834 km ENE of Adak, Alaska · 1983 days ago · 11 km deep · 73 km away
  15. 2.232 km NE of Adak, Alaska · 1983 days ago · 9 km deep · 77 km away
  16. 2.635 km NE of Adak, Alaska · 1983 days ago · 10 km deep · 76 km away
  17. 3.168 km SW of Adak, Alaska · 1983 days ago · 34 km deep · 75 km away
  18. 2.547 km SW of Adak, Alaska · 1982 days ago · 24 km deep · 69 km away
  19. 3.893 km ESE of Adak, Alaska · 1982 days ago · 50 km deep · 69 km away
  20. 1.950 km S of Adak, Alaska · 1982 days ago · 25 km deep · 22 km away
  21. 1.771 km SW of Atka, Alaska · 1981 days ago · 38 km deep · 95 km away
  22. 2.5Andreanof Islands, Aleutian Islands, Alaska · 1981 days ago · 35 km deep · 72 km away
  23. 2.881 km SE of Adak, Alaska · 1980 days ago · 33 km deep · 38 km away
  24. 2.057 km SSE of Adak, Alaska · 1980 days ago · 27 km deep · 6 km away
  25. 1.860 km SE of Adak, Alaska · 1978 days ago · 26 km deep · 9 km away
  26. 1.746 km ENE of Adak, Alaska · 1978 days ago · 8 km deep · 76 km away
  27. 1.849 km S of Adak, Alaska · 1978 days ago · 25 km deep · 23 km away
  28. 2.041 km SSE of Adak, Alaska · 1978 days ago · 36 km deep · 20 km away
  29. 2.869 km ENE of Adak, Alaska · 1978 days ago · 82 km deep · 83 km away
  30. 1.746 km W of Adak, Alaska · 1977 days ago · 80 km deep · 94 km away
  31. 2.145 km E of Adak, Alaska · 1977 days ago · 127 km deep · 63 km away
  32. 2.264 km SSE of Adak, Alaska · 1977 days ago · 23 km deep · 18 km away
  33. 1.8119 km SSW of Atka, Alaska · 1977 days ago · 7 km deep · 85 km away
  34. 1.643 km S of Adak, Alaska · 1976 days ago · 44 km deep · 26 km away
  35. 1.727 km ESE of Adak, Alaska · 1976 days ago · 98 km deep · 43 km away
  36. 3.6100 km SW of Atka, Alaska · 1972 days ago · 35 km deep · 72 km away
  37. 1.767 km WSW of Adak, Alaska · 1972 days ago · 72 km deep · 98 km away
  38. 1.849 km SE of Adak, Alaska · 1971 days ago · 30 km deep · 15 km away
  39. 1.857 km W of Adak, Alaska · 1971 days ago · -2 km deep · 99 km away
  40. 2.057 km W of Adak, Alaska · 1970 days ago · -2 km deep · 99 km away
  41. 2.057 km W of Adak, Alaska · 1968 days ago · -2 km deep · 99 km away
  42. 1.956 km W of Adak, Alaska · 1968 days ago · 11 km deep · 95 km away
  43. 1.599 km SW of Atka, Alaska · 1963 days ago · 26 km deep · 74 km away
  44. 1.934 km ENE of Adak, Alaska · 1962 days ago · 132 km deep · 63 km away
  45. 3.199 km ESE of Adak, Alaska · 1962 days ago · 35 km deep · 69 km away
  46. 1.974 km SW of Adak, Alaska · 1962 days ago · 26 km deep · 89 km away
  47. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1961 days ago · 29 km deep · 63 km away
  48. 1.652 km SW of Adak, Alaska · 1961 days ago · 45 km deep · 66 km away
  49. 3.831 km SSE of Adak, Alaska · 1961 days ago · 50 km deep · 30 km away
  50. 2.579 km WSW of Atka, Alaska · 1961 days ago · 57 km deep · 86 km away
  51. 1.957 km SSE of Adak, Alaska · 1959 days ago · 26 km deep · 4 km away
  52. 3.975 km WSW of Adak, Alaska · 1955 days ago · 68 km deep · 96 km away
  53. 4.1101 km S of Adak, Alaska · 1951 days ago · 10 km deep · 53 km away
  54. 1.539 km NE of Adak, Alaska · 1950 days ago · 10 km deep · 80 km away
  55. 1.637 km NE of Adak, Alaska · 1950 days ago · 10 km deep · 80 km away
  56. 1.638 km NE of Adak, Alaska · 1950 days ago · 8 km deep · 81 km away
  57. 2.984 km E of Adak, Alaska · 1949 days ago · 238 km deep · 82 km away
  58. 4.065 km SW of Adak, Alaska · 1949 days ago · 43 km deep · 66 km away
  59. 2.744 km E of Adak, Alaska · 1946 days ago · 69 km deep · 51 km away
  60. 4.246 km SW of Adak, Alaska · 1945 days ago · 48 km deep · 66 km away

The first 60 of 67.

Before

  1. 1.737 km SSE of Adak, Alaska · 1987 days ago · 57 km deep · 27 km away
  2. 1.663 km S of Adak, Alaska · 1987 days ago · 25 km deep · 40 km away
  3. 1.967 km SSW of Adak, Alaska · 1987 days ago · 44 km deep · 65 km away
  4. 1.756 km E of Adak, Alaska · 1987 days ago · 71 km deep · 62 km away
  5. 1.678 km E of Adak, Alaska · 1987 days ago · 71 km deep · 73 km away
  6. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1988 days ago · 39 km deep · 35 km away
  7. 1.575 km SSE of Adak, Alaska · 1988 days ago · 26 km deep · 16 km away
  8. 2.182 km E of Adak, Alaska · 1988 days ago · 116 km deep · 85 km away
  9. 1.767 km SSE of Adak, Alaska · 1988 days ago · 12 km deep · 10 km away
  10. 1.552 km SSW of Adak, Alaska · 1988 days ago · 36 km deep · 58 km away
  11. 1.555 km SSW of Adak, Alaska · 1988 days ago · 19 km deep · 45 km away
  12. 3.898 km SSE of Adak, Alaska · 1988 days ago · 10 km deep · 38 km away
  13. 1.662 km SSE of Adak, Alaska · 1988 days ago · 22 km deep · 2 km away
  14. 1.548 km SSE of Adak, Alaska · 1988 days ago · 23 km deep · 13 km away
  15. 1.633 km SSW of Adak, Alaska · 1988 days ago · 51 km deep · 52 km away
  16. 2.874 km ESE of Adak, Alaska · 1989 days ago · 35 km deep · 38 km away
  17. 1.575 km ESE of Adak, Alaska · 1989 days ago · 29 km deep · 48 km away
  18. 2.525 km SE of Adak, Alaska · 1989 days ago · 78 km deep · 39 km away
  19. 1.734 km NE of Adak, Alaska · 1990 days ago · 129 km deep · 75 km away
  20. 2.753 km SSW of Adak, Alaska · 1990 days ago · 36 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02150dfz99. Read Sat, Sep 26, 2026, 8:50 PM UTC.