Alaska earthquakes

M1.9 earthquake 178 km WSW of Adak, Alaska

A magnitude 1.9 earthquake struck 178 km WSW of Adak, Alaska on Mon, Feb 1, 2021, 1:15 PM HAST (23:15 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M5.6 209 km WSW of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2021-02-01 23:15:24 UTC
Depth
1.3 km (0.8 mi), shallow
Epicenter
51.541° N, 179.154° 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
21

Nearby

Within 100 km, magnitude 1.5 and up: 113 in the 60 days after this one and 54 in the 30 days before it.

After

  1. 1.9130 km SW of Adak, Alaska · 2063 days ago · 45 km deep · 82 km away
  2. 2.7121 km SW of Adak, Alaska · 2063 days ago · 30 km deep · 86 km away
  3. 1.9149 km WSW of Adak, Alaska · 2061 days ago · 10 km deep · 35 km away
  4. 1.5Andreanof Islands, Aleutian Islands, Alaska · 2061 days ago · 7 km deep · 99 km away
  5. 1.9120 km SW of Adak, Alaska · 2061 days ago · 26 km deep · 82 km away
  6. 1.787 km WSW of Adak, Alaska · 2060 days ago · 44 km deep · 96 km away
  7. 1.786 km WSW of Adak, Alaska · 2060 days ago · 48 km deep · 99 km away
  8. 3.9112 km SW of Adak, Alaska · 2059 days ago · 42 km deep · 88 km away
  9. 1.9110 km SW of Adak, Alaska · 2058 days ago · 45 km deep · 87 km away
  10. 2.8154 km SW of Adak, Alaska · 2056 days ago · 31 km deep · 66 km away
  11. 3.0242 km WSW of Adak, Alaska · 2053 days ago · 13 km deep · 75 km away
  12. 2.8150 km WSW of Adak, Alaska · 2053 days ago · 32 km deep · 66 km away
  13. 4.8184 km WSW of Adak, Alaska · 2050 days ago · 23 km deep · 12 km away
  14. 3.3Andreanof Islands, Aleutian Islands, Alaska · 2050 days ago · 35 km deep · 28 km away
  15. 3.5173 km WSW of Adak, Alaska · 2050 days ago · 10 km deep · 5 km away
  16. 3.9139 km WSW of Adak, Alaska · 2048 days ago · 35 km deep · 69 km away
  17. 2.0135 km WSW of Adak, Alaska · 2048 days ago · 24 km deep · 65 km away
  18. 1.681 km W of Adak, Alaska · 2047 days ago · 4 km deep · 98 km away
  19. 1.9126 km WSW of Adak, Alaska · 2047 days ago · 26 km deep · 68 km away
  20. 2.5122 km WSW of Adak, Alaska · 2047 days ago · 75 km deep · 57 km away
  21. 2.5193 km WSW of Adak, Alaska · 2047 days ago · 27 km deep · 34 km away
  22. 3.8212 km WSW of Adak, Alaska · 2046 days ago · 31 km deep · 59 km away
  23. 2.8224 km WSW of Adak, Alaska · 2046 days ago · 26 km deep · 74 km away
  24. 4.2227 km SW of Adak, Alaska · 2046 days ago · 10 km deep · 88 km away
  25. 5.6209 km WSW of Adak, Alaska · 2046 days ago · 19 km deep · 67 km away · tsunami flag
  26. 4.6199 km WSW of Adak, Alaska · 2046 days ago · 35 km deep · 50 km away · felt by 1
  27. 3.4216 km WSW of Adak, Alaska · 2046 days ago · 10 km deep · 78 km away
  28. 3.0217 km SW of Adak, Alaska · 2046 days ago · 10 km deep · 81 km away
  29. 2.2206 km WSW of Adak, Alaska · 2046 days ago · 7 km deep · 66 km away
  30. 3.5213 km WSW of Adak, Alaska · 2046 days ago · 10 km deep · 77 km away
  31. 3.5218 km WSW of Adak, Alaska · 2046 days ago · 10 km deep · 71 km away
  32. 4.1236 km WSW of Adak, Alaska · 2046 days ago · 10 km deep · 82 km away
  33. 3.8237 km WSW of Adak, Alaska · 2046 days ago · 23 km deep · 82 km away
  34. 3.6136 km WSW of Adak, Alaska · 2045 days ago · 19 km deep · 60 km away
  35. 3.8228 km WSW of Adak, Alaska · 2045 days ago · 10 km deep · 83 km away
  36. 3.0208 km WSW of Adak, Alaska · 2045 days ago · 16 km deep · 60 km away
  37. 3.9180 km WSW of Adak, Alaska · 2045 days ago · 37 km deep · 45 km away
  38. 2.1204 km WSW of Adak, Alaska · 2045 days ago · 8 km deep · 61 km away
  39. 3.1234 km WSW of Adak, Alaska · 2045 days ago · 10 km deep · 77 km away
  40. 4.0218 km WSW of Adak, Alaska · 2045 days ago · 10 km deep · 74 km away
  41. 4.1211 km WSW of Adak, Alaska · 2045 days ago · 35 km deep · 61 km away
  42. 1.8179 km WSW of Adak, Alaska · 2045 days ago · 13 km deep · 31 km away
  43. 2.9213 km WSW of Adak, Alaska · 2045 days ago · 13 km deep · 65 km away
  44. 2.4109 km W of Adak, Alaska · 2045 days ago · 188 km deep · 69 km away
  45. 3.0235 km W of Adak, Alaska · 2044 days ago · 172 km deep · 94 km away
  46. 1.9117 km WSW of Adak, Alaska · 2044 days ago · 27 km deep · 68 km away
  47. 2.1111 km W of Adak, Alaska · 2044 days ago · 80 km deep · 68 km away
  48. 1.7126 km WSW of Adak, Alaska · 2044 days ago · 13 km deep · 52 km away
  49. 2.781 km WSW of Adak, Alaska · 2044 days ago · 79 km deep · 97 km away
  50. 4.8220 km WSW of Adak, Alaska · 2044 days ago · 10 km deep · 80 km away
  51. 3.7225 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 81 km away
  52. 2.899 km WSW of Adak, Alaska · 2043 days ago · 34 km deep · 87 km away
  53. 3.1267 km W of Adak, Alaska · 2043 days ago · 35 km deep · 90 km away
  54. 2.8234 km WSW of Adak, Alaska · 2043 days ago · 24 km deep · 78 km away
  55. 3.9222 km WSW of Adak, Alaska · 2043 days ago · 22 km deep · 71 km away
  56. 1.9134 km SW of Adak, Alaska · 2042 days ago · 41 km deep · 81 km away
  57. 1.8139 km WSW of Adak, Alaska · 2042 days ago · 25 km deep · 58 km away
  58. 2.893 km WSW of Adak, Alaska · 2042 days ago · 35 km deep · 97 km away
  59. 2.2169 km WSW of Adak, Alaska · 2042 days ago · 20 km deep · 56 km away
  60. 1.9170 km W of Adak, Alaska · 2042 days ago · 5 km deep · 25 km away

The first 60 of 113.

Before

  1. 2.8252 km WSW of Adak, Alaska · 2063 days ago · 35 km deep · 80 km away
  2. 1.685 km WSW of Adak, Alaska · 2063 days ago · 13 km deep · 96 km away
  3. 2.0118 km WSW of Adak, Alaska · 2064 days ago · 33 km deep · 75 km away
  4. 2.8138 km SW of Adak, Alaska · 2065 days ago · 35 km deep · 82 km away
  5. 2.7243 km WSW of Adak, Alaska · 2066 days ago · 21 km deep · 73 km away
  6. 2.1131 km W of Adak, Alaska · 2066 days ago · 115 km deep · 50 km away
  7. 1.885 km WSW of Adak, Alaska · 2066 days ago · 72 km deep · 92 km away
  8. 2.1134 km WSW of Adak, Alaska · 2067 days ago · 20 km deep · 60 km away
  9. 1.681 km W of Adak, Alaska · 2068 days ago · 8 km deep · 99 km away
  10. 2.783 km W of Adak, Alaska · 2071 days ago · 108 km deep · 96 km away
  11. 2.0124 km WSW of Adak, Alaska · 2071 days ago · 14 km deep · 64 km away
  12. 2.7102 km SW of Adak, Alaska · 2071 days ago · 33 km deep · 93 km away
  13. 1.9135 km WSW of Adak, Alaska · 2072 days ago · 23 km deep · 65 km away
  14. 1.7113 km WSW of Adak, Alaska · 2073 days ago · 13 km deep · 69 km away
  15. 1.9137 km WSW of Adak, Alaska · 2073 days ago · 25 km deep · 54 km away
  16. 2.1162 km W of Adak, Alaska · 2073 days ago · 92 km deep · 19 km away
  17. 1.9131 km W of Adak, Alaska · 2073 days ago · 94 km deep · 48 km away
  18. 2.1194 km W of Adak, Alaska · 2075 days ago · 89 km deep · 23 km away
  19. 1.6126 km WSW of Adak, Alaska · 2075 days ago · 7 km deep · 52 km away
  20. 2.3188 km W of Adak, Alaska · 2075 days ago · 95 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0211hazcch. Read Sun, Sep 27, 2026, 2:38 AM UTC.