Alaska earthquakes

M2.7 earthquake 33 km SW of Atka, Alaska

A magnitude 2.7 earthquake struck 33 km SW of Atka, Alaska on Mon, Jan 18, 2021, 7:01 AM HAST (17:01 UTC), 220 km (137 mi) below the surface.

A larger quake followed: M4.7 37 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.7 (ml), micro
Local time
UTC
2021-01-18 17:01:49 UTC
Depth
220.4 km (137.0 mi), intermediate-depth
Epicenter
51.957° N, 174.491° 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 34.0 km horizontally, 11.7 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
226°, poorly surrounded by stations
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: 104 in the 60 days after this one and 48 in the 30 days before it.

After

  1. 2.1Andreanof Islands, Aleutian Islands, Alaska · 2076 days ago · 72 km deep · 8 km away
  2. 2.020 km SSE of Atka, Alaska · 2076 days ago · 14 km deep · 25 km away
  3. 1.535 km SE of Atka, Alaska · 2075 days ago · 24 km deep · 45 km away
  4. 1.963 km E of Adak, Alaska · 2074 days ago · 21 km deep · 87 km away
  5. 1.766 km SSW of Atka, Alaska · 2073 days ago · 18 km deep · 34 km away
  6. 1.972 km ESE of Atka, Alaska · 2073 days ago · 34 km deep · 87 km away
  7. 3.09 km NW of Atka, Alaska · 2072 days ago · 191 km deep · 35 km away
  8. 2.563 km ENE of Adak, Alaska · 2072 days ago · 182 km deep · 87 km away
  9. 2.188 km SW of Atka, Alaska · 2071 days ago · 26 km deep · 57 km away
  10. 2.187 km SE of Adak, Alaska · 2071 days ago · 22 km deep · 95 km away
  11. 1.978 km SE of Adak, Alaska · 2071 days ago · 20 km deep · 100 km away
  12. 2.077 km ESE of Adak, Alaska · 2070 days ago · 50 km deep · 92 km away
  13. 2.597 km SW of Atka, Alaska · 2070 days ago · 71 km deep · 65 km away
  14. 2.078 km S of Atka, Alaska · 2069 days ago · 25 km deep · 59 km away
  15. 2.186 km SE of Adak, Alaska · 2066 days ago · 25 km deep · 95 km away
  16. 3.436 km E of Atka, Alaska · 2065 days ago · 14 km deep · 63 km away
  17. 2.076 km WSW of Atka, Alaska · 2064 days ago · 68 km deep · 49 km away
  18. 2.532 km W of Atka, Alaska · 2064 days ago · 208 km deep · 31 km away
  19. 2.293 km SE of Adak, Alaska · 2064 days ago · 20 km deep · 100 km away
  20. 2.767 km SSW of Atka, Alaska · 2062 days ago · 35 km deep · 37 km away
  21. 2.885 km ESE of Adak, Alaska · 2062 days ago · 35 km deep · 91 km away
  22. 2.048 km E of Adak, Alaska · 2062 days ago · 127 km deep · 100 km away
  23. 1.789 km ESE of Adak, Alaska · 2062 days ago · 12 km deep · 93 km away
  24. 2.032 km WSW of Atka, Alaska · 2061 days ago · 186 km deep · 12 km away
  25. 2.123 km WNW of Atka, Alaska · 2061 days ago · 168 km deep · 34 km away
  26. 2.188 km E of Adak, Alaska · 2060 days ago · 66 km deep · 61 km away
  27. 3.128 km ESE of Atka, Alaska · 2060 days ago · 95 km deep · 45 km away
  28. 2.693 km SW of Atka, Alaska · 2060 days ago · 35 km deep · 60 km away
  29. 1.956 km SSW of Atka, Alaska · 2060 days ago · 17 km deep · 24 km away
  30. 1.832 km SSE of Atka, Alaska · 2059 days ago · 62 km deep · 32 km away
  31. 1.756 km SSE of Atka, Alaska · 2059 days ago · 18 km deep · 43 km away
  32. 3.333 km NNW of Atka, Alaska · 2056 days ago · 203 km deep · 56 km away
  33. 1.895 km ESE of Adak, Alaska · 2056 days ago · 26 km deep · 80 km away
  34. 2.732 km S of Atka, Alaska · 2055 days ago · 76 km deep · 21 km away
  35. 2.136 km E of Atka, Alaska · 2055 days ago · 156 km deep · 59 km away
  36. 2.141 km NNE of Atka, Alaska · 2055 days ago · 153 km deep · 74 km away
  37. 3.498 km S of Atka, Alaska · 2054 days ago · 10 km deep · 74 km away
  38. 2.665 km NNW of Atka, Alaska · 2054 days ago · 195 km deep · 84 km away
  39. 1.517 km SSW of Atka, Alaska · 2054 days ago · 12 km deep · 16 km away
  40. 2.0102 km SSW of Atka, Alaska · 2054 days ago · 25 km deep · 70 km away
  41. 1.847 km SSW of Atka, Alaska · 2054 days ago · 44 km deep · 16 km away
  42. 3.176 km SSW of Atka, Alaska · 2052 days ago · 35 km deep · 43 km away
  43. 2.755 km NNW of Atka, Alaska · 2051 days ago · 189 km deep · 74 km away
  44. 3.070 km SE of Atka, Alaska · 2049 days ago · 35 km deep · 75 km away
  45. 1.931 km S of Atka, Alaska · 2047 days ago · 58 km deep · 22 km away
  46. 3.7100 km SW of Atka, Alaska · 2047 days ago · 40 km deep · 67 km away
  47. 2.860 km WSW of Atka, Alaska · 2046 days ago · 67 km deep · 32 km away
  48. 1.694 km SW of Atka, Alaska · 2046 days ago · 20 km deep · 62 km away
  49. 1.544 km SE of Atka, Alaska · 2045 days ago · 5 km deep · 52 km away
  50. 1.884 km S of Atka, Alaska · 2045 days ago · 3 km deep · 59 km away
  51. 1.824 km W of Atka, Alaska · 2045 days ago · 25 km deep · 27 km away
  52. 2.365 km SE of Atka, Alaska · 2044 days ago · 90 km deep · 67 km away
  53. 2.673 km SE of Atka, Alaska · 2044 days ago · 55 km deep · 74 km away
  54. 1.991 km ESE of Adak, Alaska · 2044 days ago · 25 km deep · 76 km away
  55. 1.797 km ESE of Adak, Alaska · 2044 days ago · 29 km deep · 71 km away
  56. 1.973 km SSW of Atka, Alaska · 2043 days ago · 14 km deep · 45 km away
  57. 2.739 km NW of Atka, Alaska · 2043 days ago · 229 km deep · 52 km away
  58. 3.028 km E of Atka, Alaska · 2043 days ago · 181 km deep · 56 km away
  59. 1.877 km ESE of Adak, Alaska · 2042 days ago · 27 km deep · 97 km away
  60. 2.7105 km ESE of Adak, Alaska · 2042 days ago · 33 km deep · 76 km away

The first 60 of 104.

Before

  1. 1.760 km ESE of Adak, Alaska · 2076 days ago · 55 km deep · 91 km away
  2. 2.165 km SE of Atka, Alaska · 2078 days ago · 28 km deep · 70 km away
  3. 2.463 km SW of Atka, Alaska · 2078 days ago · 2 km deep · 30 km away
  4. 4.465 km NNW of Atka, Alaska · 2079 days ago · 215 km deep · 85 km away
  5. 2.491 km SW of Atka, Alaska · 2079 days ago · 16 km deep · 59 km away
  6. 2.067 km S of Atka, Alaska · 2079 days ago · 4 km deep · 43 km away
  7. 3.193 km S of Atka, Alaska · 2079 days ago · 24 km deep · 74 km away
  8. 2.129 km SW of Atka, Alaska · 2079 days ago · 90 km deep · 6 km away
  9. 4.0103 km S of Atka, Alaska · 2079 days ago · 27 km deep · 82 km away
  10. 2.382 km S of Atka, Alaska · 2079 days ago · 5 km deep · 64 km away
  11. 4.0111 km SSE of Atka, Alaska · 2079 days ago · 34 km deep · 96 km away
  12. 4.991 km S of Atka, Alaska · 2081 days ago · 19 km deep · 70 km away
  13. 1.974 km SE of Atka, Alaska · 2081 days ago · 12 km deep · 76 km away
  14. 4.050 km W of Atka, Alaska · 2081 days ago · 90 km deep · 34 km away
  15. 2.283 km ESE of Adak, Alaska · 2083 days ago · 48 km deep · 89 km away
  16. 1.950 km SSW of Atka, Alaska · 2083 days ago · 26 km deep · 23 km away
  17. 2.7100 km ESE of Adak, Alaska · 2083 days ago · 35 km deep · 71 km away
  18. 3.890 km SW of Atka, Alaska · 2085 days ago · 35 km deep · 57 km away
  19. 2.765 km ENE of Atka, Alaska · 2085 days ago · 139 km deep · 97 km away
  20. 1.969 km ESE of Adak, Alaska · 2087 days ago · 44 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dd1m (also filed as ak021u1sxq2). Read Fri, Sep 25, 2026, 6:06 PM UTC.