Alaska earthquakes

M3.7 earthquake 251 km WSW of Adak, Alaska

A magnitude 3.7 earthquake struck 251 km WSW of Adak, Alaska on Sun, Jan 3, 2021, 12:56 AM GMT-12 (12:56 UTC), 10 km (6 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
3.7 (mb), minor
Local time
UTC
2021-01-03 12:56:10 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.872° N, 179.868° 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 10.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
190°, poorly surrounded by stations
Stations used
29

Nearby

Within 100 km, magnitude 1.5 and up: 67 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 3.9242 km WSW of Adak, Alaska · 2090 days ago · 35 km deep · 24 km away
  2. 4.0236 km WSW of Adak, Alaska · 2090 days ago · 31 km deep · 41 km away
  3. 3.7230 km W of Adak, Alaska · 2090 days ago · 6 km deep · 95 km away
  4. 4.0231 km WSW of Adak, Alaska · 2090 days ago · 35 km deep · 36 km away
  5. 2.1176 km WSW of Adak, Alaska · 2089 days ago · 76 km deep · 89 km away
  6. 2.3241 km WSW of Adak, Alaska · 2089 days ago · 47 km deep · 22 km away
  7. 2.9253 km WSW of Adak, Alaska · 2089 days ago · 35 km deep · 43 km away
  8. 3.2241 km WSW of Adak, Alaska · 2088 days ago · 23 km deep · 29 km away
  9. 4.6Rat Islands, Aleutian Islands, Alaska · 2088 days ago · 35 km deep · 95 km away
  10. 3.1245 km WSW of Adak, Alaska · 2088 days ago · 10 km deep · 15 km away
  11. 1.9185 km WSW of Adak, Alaska · 2088 days ago · 12 km deep · 76 km away
  12. 2.6253 km WSW of Adak, Alaska · 2087 days ago · 35 km deep · 18 km away
  13. 2.6247 km WSW of Adak, Alaska · 2087 days ago · 10 km deep · 8 km away
  14. 3.5210 km WSW of Adak, Alaska · 2087 days ago · 35 km deep · 42 km away
  15. 4.1193 km WSW of Adak, Alaska · 2087 days ago · 28 km deep · 58 km away
  16. 3.2250 km WSW of Adak, Alaska · 2087 days ago · 35 km deep · 20 km away
  17. 3.6240 km WSW of Adak, Alaska · 2086 days ago · 24 km deep · 36 km away
  18. 2.9258 km WSW of Adak, Alaska · 2086 days ago · 33 km deep · 36 km away
  19. 2.8205 km WSW of Adak, Alaska · 2085 days ago · 35 km deep · 46 km away
  20. 2.0231 km WSW of Adak, Alaska · 2085 days ago · 8 km deep · 25 km away
  21. 3.4267 km SW of Adak, Alaska · 2085 days ago · 21 km deep · 97 km away
  22. 2.7157 km WSW of Adak, Alaska · 2073 days ago · 17 km deep · 93 km away
  23. 2.2152 km WSW of Adak, Alaska · 2073 days ago · 22 km deep · 100 km away
  24. 2.1194 km W of Adak, Alaska · 2072 days ago · 89 km deep · 94 km away
  25. 2.7243 km WSW of Adak, Alaska · 2063 days ago · 21 km deep · 23 km away
  26. 2.8252 km WSW of Adak, Alaska · 2061 days ago · 35 km deep · 25 km away
  27. 1.9178 km WSW of Adak, Alaska · 2061 days ago · 1 km deep · 89 km away
  28. 2.8154 km SW of Adak, Alaska · 2053 days ago · 31 km deep · 100 km away
  29. 3.0242 km WSW of Adak, Alaska · 2051 days ago · 13 km deep · 18 km away
  30. 4.8184 km WSW of Adak, Alaska · 2048 days ago · 23 km deep · 78 km away
  31. 3.3Andreanof Islands, Aleutian Islands, Alaska · 2048 days ago · 35 km deep · 64 km away
  32. 3.5173 km WSW of Adak, Alaska · 2047 days ago · 10 km deep · 93 km away
  33. 3.2296 km SW of Adak, Alaska · 2046 days ago · 10 km deep · 82 km away
  34. 2.5193 km WSW of Adak, Alaska · 2044 days ago · 27 km deep · 60 km away
  35. 3.8212 km WSW of Adak, Alaska · 2043 days ago · 31 km deep · 38 km away
  36. 2.8224 km WSW of Adak, Alaska · 2043 days ago · 26 km deep · 28 km away
  37. 4.2227 km SW of Adak, Alaska · 2043 days ago · 10 km deep · 38 km away
  38. 5.6209 km WSW of Adak, Alaska · 2043 days ago · 19 km deep · 44 km away · tsunami flag
  39. 4.6199 km WSW of Adak, Alaska · 2043 days ago · 35 km deep · 52 km away · felt by 1
  40. 3.4216 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 42 km away
  41. 3.0217 km SW of Adak, Alaska · 2043 days ago · 10 km deep · 44 km away
  42. 2.2206 km WSW of Adak, Alaska · 2043 days ago · 7 km deep · 47 km away
  43. 3.5213 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 45 km away
  44. 3.5218 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 35 km away
  45. 4.1236 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 17 km away
  46. 3.8237 km WSW of Adak, Alaska · 2043 days ago · 23 km deep · 16 km away
  47. 3.8228 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 31 km away
  48. 3.0208 km WSW of Adak, Alaska · 2043 days ago · 16 km deep · 43 km away
  49. 3.9180 km WSW of Adak, Alaska · 2043 days ago · 37 km deep · 70 km away
  50. 2.1204 km WSW of Adak, Alaska · 2043 days ago · 8 km deep · 47 km away
  51. 3.1234 km WSW of Adak, Alaska · 2043 days ago · 10 km deep · 17 km away
  52. 4.0218 km WSW of Adak, Alaska · 2042 days ago · 10 km deep · 37 km away
  53. 4.1211 km WSW of Adak, Alaska · 2042 days ago · 35 km deep · 40 km away
  54. 1.8179 km WSW of Adak, Alaska · 2042 days ago · 13 km deep · 74 km away
  55. 2.9213 km WSW of Adak, Alaska · 2042 days ago · 13 km deep · 39 km away
  56. 4.8220 km WSW of Adak, Alaska · 2041 days ago · 10 km deep · 39 km away
  57. 3.7225 km WSW of Adak, Alaska · 2041 days ago · 10 km deep · 32 km away
  58. 3.1267 km W of Adak, Alaska · 2041 days ago · 35 km deep · 82 km away
  59. 2.8234 km WSW of Adak, Alaska · 2040 days ago · 24 km deep · 17 km away
  60. 3.9222 km WSW of Adak, Alaska · 2040 days ago · 22 km deep · 29 km away

The first 60 of 67.

Before

  1. 6.1230 km WSW of Adak, Alaska · 2090 days ago · 21 km deep · 39 km away · felt by 3 · tsunami flag
  2. 4.1204 km WSW of Adak, Alaska · 2092 days ago · 35 km deep · 69 km away
  3. 1.8183 km WSW of Adak, Alaska · 2094 days ago · 15 km deep · 68 km away
  4. 2.5273 km SW of Adak, Alaska · 2094 days ago · 27 km deep · 44 km away
  5. 2.7239 km WSW of Adak, Alaska · 2095 days ago · 35 km deep · 45 km away
  6. 3.9191 km WSW of Adak, Alaska · 2099 days ago · 83 km deep · 70 km away
  7. 3.0183 km WSW of Adak, Alaska · 2100 days ago · 35 km deep · 68 km away
  8. 3.1253 km WSW of Adak, Alaska · 2101 days ago · 10 km deep · 23 km away
  9. 3.0254 km WSW of Adak, Alaska · 2103 days ago · 12 km deep · 25 km away
  10. 2.5240 km WSW of Adak, Alaska · 2109 days ago · 15 km deep · 61 km away
  11. 3.8289 km WSW of Adak, Alaska · 2109 days ago · 29 km deep · 49 km away
  12. 2.7192 km WSW of Adak, Alaska · 2109 days ago · 28 km deep · 66 km away
  13. 3.1241 km WSW of Adak, Alaska · 2111 days ago · 35 km deep · 51 km away
  14. 2.9191 km WSW of Adak, Alaska · 2111 days ago · 30 km deep · 61 km away
  15. 1.9155 km WSW of Adak, Alaska · 2112 days ago · 22 km deep · 98 km away
  16. 3.4214 km WSW of Adak, Alaska · 2113 days ago · 21 km deep · 38 km away
  17. 2.3180 km WSW of Adak, Alaska · 2113 days ago · 74 km deep · 87 km away
  18. 4.5221 km WSW of Adak, Alaska · 2114 days ago · 10 km deep · 34 km away
  19. 1.9200 km WSW of Adak, Alaska · 2116 days ago · 22 km deep · 59 km away
  20. 1.9Andreanof Islands, Aleutian Islands, Alaska · 2116 days ago · 22 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000d80w. Read Thu, Sep 24, 2026, 3:38 PM UTC.