Alaska earthquakes

M4.0 earthquake 111 km SSE of Atka, Alaska

A magnitude 4.0 earthquake struck 111 km SSE of Atka, Alaska on Fri, Jan 15, 2021, 4:10 AM HAST (14:10 UTC), 34 km (21 mi) below the surface.

A larger quake followed: M4.2 66 km SSW of Atka, 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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2021-01-15 14:10:09 UTC
Depth
33.9 km (21.1 mi), shallow
Epicenter
51.236° N, 173.726° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
4.0mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.125 · 17 stations
3.3ML, local (Richter)Alaska Earthquake CenterPreliminary

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 4.7 km horizontally, 6.6 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
200°, poorly surrounded by stations
Stations used
41

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 2.382 km S of Atka, Alaska · 2087 days ago · 5 km deep · 32 km away
  2. 4.0103 km S of Atka, Alaska · 2087 days ago · 27 km deep · 23 km away
  3. 3.193 km S of Atka, Alaska · 2087 days ago · 24 km deep · 24 km away
  4. 2.067 km S of Atka, Alaska · 2087 days ago · 4 km deep · 56 km away
  5. 2.463 km SW of Atka, Alaska · 2086 days ago · 2 km deep · 93 km away
  6. 2.165 km SE of Atka, Alaska · 2086 days ago · 28 km deep · 63 km away
  7. 2.733 km SW of Atka, Alaska · 2084 days ago · 220 km deep · 96 km away
  8. 2.1Andreanof Islands, Aleutian Islands, Alaska · 2084 days ago · 72 km deep · 100 km away
  9. 2.020 km SSE of Atka, Alaska · 2083 days ago · 14 km deep · 92 km away
  10. 1.535 km SE of Atka, Alaska · 2082 days ago · 24 km deep · 82 km away
  11. 1.766 km SSW of Atka, Alaska · 2081 days ago · 18 km deep · 85 km away
  12. 1.972 km ESE of Atka, Alaska · 2080 days ago · 34 km deep · 87 km away
  13. 2.078 km S of Atka, Alaska · 2077 days ago · 25 km deep · 38 km away
  14. 2.767 km SSW of Atka, Alaska · 2070 days ago · 35 km deep · 70 km away
  15. 2.2181 km SSE of Atka, Alaska · 2068 days ago · 10 km deep · 69 km away
  16. 3.128 km ESE of Atka, Alaska · 2068 days ago · 95 km deep · 92 km away
  17. 1.956 km SSW of Atka, Alaska · 2067 days ago · 17 km deep · 88 km away
  18. 1.832 km SSE of Atka, Alaska · 2066 days ago · 62 km deep · 79 km away
  19. 1.756 km SSE of Atka, Alaska · 2066 days ago · 18 km deep · 56 km away
  20. 2.732 km S of Atka, Alaska · 2063 days ago · 76 km deep · 81 km away
  21. 2.136 km E of Atka, Alaska · 2063 days ago · 156 km deep · 100 km away
  22. 3.498 km S of Atka, Alaska · 2062 days ago · 10 km deep · 37 km away
  23. 1.517 km SSW of Atka, Alaska · 2062 days ago · 12 km deep · 99 km away
  24. 2.0102 km SSW of Atka, Alaska · 2061 days ago · 25 km deep · 80 km away
  25. 1.847 km SSW of Atka, Alaska · 2061 days ago · 44 km deep · 85 km away
  26. 3.176 km SSW of Atka, Alaska · 2060 days ago · 35 km deep · 87 km away
  27. 3.070 km SE of Atka, Alaska · 2057 days ago · 35 km deep · 62 km away
  28. 1.931 km S of Atka, Alaska · 2055 days ago · 58 km deep · 82 km away
  29. 1.694 km SW of Atka, Alaska · 2053 days ago · 20 km deep · 100 km away
  30. 1.544 km SE of Atka, Alaska · 2053 days ago · 5 km deep · 75 km away
  31. 1.884 km S of Atka, Alaska · 2053 days ago · 3 km deep · 45 km away
  32. 2.9151 km SSE of Atka, Alaska · 2052 days ago · 10 km deep · 42 km away
  33. 2.365 km SE of Atka, Alaska · 2052 days ago · 90 km deep · 58 km away
  34. 2.673 km SE of Atka, Alaska · 2052 days ago · 55 km deep · 53 km away
  35. 2.6107 km SE of Atka, Alaska · 2051 days ago · 35 km deep · 57 km away
  36. 2.3203 km S of Atka, Alaska · 2051 days ago · 10 km deep · 96 km away
  37. 1.973 km SSW of Atka, Alaska · 2051 days ago · 14 km deep · 60 km away
  38. 3.3129 km SE of Atka, Alaska · 2050 days ago · 35 km deep · 72 km away
  39. 1.920 km SE of Atka, Alaska · 2048 days ago · 16 km deep · 92 km away
  40. 2.967 km ESE of Atka, Alaska · 2046 days ago · 54 km deep · 80 km away
  41. 2.2128 km S of Atka, Alaska · 2045 days ago · 7 km deep · 44 km away
  42. 2.330 km S of Atka, Alaska · 2045 days ago · 159 km deep · 83 km away
  43. 1.648 km S of Atka, Alaska · 2044 days ago · 56 km deep · 67 km away
  44. 2.246 km SSE of Atka, Alaska · 2043 days ago · 49 km deep · 66 km away
  45. 4.266 km SSW of Atka, Alaska · 2042 days ago · 63 km deep · 80 km away
  46. 3.860 km S of Atka, Alaska · 2039 days ago · 10 km deep · 56 km away
  47. 2.773 km SW of Atka, Alaska · 2038 days ago · 35 km deep · 96 km away
  48. 3.6155 km SE of Atka, Alaska · 2037 days ago · 23 km deep · 90 km away
  49. 2.425 km S of Atka, Alaska · 2037 days ago · 97 km deep · 87 km away
  50. 3.142 km SSE of Atka, Alaska · 2037 days ago · 27 km deep · 69 km away
  51. 2.958 km ESE of Atka, Alaska · 2036 days ago · 10 km deep · 80 km away
  52. 2.853 km SSE of Atka, Alaska · 2034 days ago · 159 km deep · 59 km away
  53. 2.6138 km SSE of Atka, Alaska · 2034 days ago · 23 km deep · 29 km away
  54. 3.181 km SSW of Atka, Alaska · 2034 days ago · 35 km deep · 72 km away
  55. 1.859 km SSW of Atka, Alaska · 2032 days ago · 15 km deep · 83 km away
  56. 2.223 km ESE of Atka, Alaska · 2032 days ago · 104 km deep · 99 km away
  57. 2.783 km S of Atka, Alaska · 2030 days ago · 69 km deep · 43 km away
  58. 1.938 km SSW of Atka, Alaska · 2029 days ago · 57 km deep · 86 km away
  59. 2.183 km SSE of Atka, Alaska · 2029 days ago · 13 km deep · 35 km away
  60. 4.033 km S of Atka, Alaska · 2028 days ago · 23 km deep · 81 km away

The first 60 of 62.

Before

  1. 4.991 km S of Atka, Alaska · 2088 days ago · 19 km deep · 28 km away
  2. 1.974 km SE of Atka, Alaska · 2088 days ago · 12 km deep · 57 km away
  3. 1.950 km SSW of Atka, Alaska · 2091 days ago · 26 km deep · 75 km away
  4. 2.5115 km SSW of Atka, Alaska · 2096 days ago · 10 km deep · 74 km away
  5. 2.040 km S of Atka, Alaska · 2096 days ago · 44 km deep · 73 km away
  6. 2.684 km SSE of Atka, Alaska · 2096 days ago · 147 km deep · 29 km away
  7. 1.8Andreanof Islands, Aleutian Islands, Alaska · 2097 days ago · 16 km deep · 37 km away
  8. 2.636 km SSW of Atka, Alaska · 2098 days ago · 215 km deep · 84 km away
  9. 1.979 km SSW of Atka, Alaska · 2103 days ago · 26 km deep · 58 km away
  10. 3.066 km S of Atka, Alaska · 2103 days ago · 20 km deep · 60 km away
  11. 2.6180 km SSE of Atka, Alaska · 2105 days ago · 10 km deep · 69 km away
  12. 2.181 km SW of Atka, Alaska · 2107 days ago · 26 km deep · 96 km away
  13. 2.2157 km S of Atka, Alaska · 2113 days ago · 3 km deep · 59 km away
  14. 3.1Andreanof Islands, Aleutian Islands, Alaska · 2114 days ago · 128 km deep · 99 km away
  15. 2.056 km S of Atka, Alaska · 2114 days ago · 24 km deep · 57 km away
  16. 3.137 km ESE of Atka, Alaska · 2114 days ago · 128 km deep · 93 km away
  17. 1.925 km SSE of Atka, Alaska · 2114 days ago · 71 km deep · 86 km away
  18. 2.866 km SSW of Atka, Alaska · 2115 days ago · 24 km deep · 84 km away
  19. 2.874 km SSW of Atka, Alaska · 2116 days ago · 35 km deep · 77 km away
  20. 2.098 km S of Atka, Alaska · 2116 days ago · 25 km deep · 32 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000d2fp (also filed as ak021p1gh2g). Read Sat, Oct 3, 2026, 12:52 PM UTC.