Alaska earthquakes

M3.0 earthquake 140 km ESE of Atka, Alaska

A magnitude 3.0 earthquake struck 140 km ESE of Atka, Alaska on Thu, Dec 28, 2023, 6:04 PM HAST (04:04 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.1 155 km ESE 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-12-29 04:04:44 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.931° N, 172.204° 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
3.0ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.7ML, 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 6.2 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
340°, poorly surrounded by stations
Stations used
13

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 3.9139 km SE of Atka, Alaska · 1009 days ago · 41 km deep · 59 km away
  2. 2.152 km E of Atka, Alaska · 1006 days ago · 2 km deep · 91 km away
  3. 3.3139 km E of Atka, Alaska · 1000 days ago · 35 km deep · 17 km away
  4. 4.094 km SE of Atka, Alaska · 1000 days ago · 50 km deep · 76 km away
  5. 3.0176 km WSW of Nikolski, Alaska · 999 days ago · 35 km deep · 77 km away
  6. 3.054 km ESE of Atka, Alaska · 996 days ago · 87 km deep · 88 km away
  7. 3.0162 km E of Atka, Alaska · 996 days ago · 75 km deep · 41 km away
  8. 3.0217 km SW of Nikolski, Alaska · 993 days ago · 10 km deep · 79 km away
  9. 3.1215 km ESE of Atka, Alaska · 993 days ago · 35 km deep · 76 km away
  10. 3.1162 km WSW of Nikolski, Alaska · 993 days ago · 35 km deep · 92 km away
  11. 3.0179 km ESE of Atka, Alaska · 992 days ago · 35 km deep · 39 km away
  12. 2.6165 km E of Atka, Alaska · 992 days ago · 10 km deep · 42 km away
  13. 3.178 km ESE of Atka, Alaska · 989 days ago · 35 km deep · 66 km away
  14. 3.0182 km WSW of Nikolski, Alaska · 989 days ago · 7 km deep · 80 km away
  15. 2.6187 km E of Atka, Alaska · 983 days ago · 35 km deep · 55 km away
  16. 3.355 km ENE of Atka, Alaska · 978 days ago · 119 km deep · 94 km away
  17. 2.9103 km ESE of Atka, Alaska · 978 days ago · 32 km deep · 36 km away
  18. 3.146 km SE of Atka, Alaska · 978 days ago · 11 km deep · 98 km away
  19. 2.383 km SE of Atka, Alaska · 977 days ago · 46 km deep · 90 km away
  20. 3.778 km ESE of Atka, Alaska · 973 days ago · 78 km deep · 65 km away
  21. 3.0100 km SE of Atka, Alaska · 964 days ago · 6 km deep · 97 km away
  22. 2.975 km E of Atka, Alaska · 963 days ago · 105 km deep · 72 km away
  23. 3.673 km ESE of Atka, Alaska · 962 days ago · 35 km deep · 71 km away
  24. 2.683 km ESE of Atka, Alaska · 962 days ago · 35 km deep · 58 km away
  25. 1.967 km ESE of Atka, Alaska · 962 days ago · 18 km deep · 81 km away
  26. 4.1155 km ESE of Atka, Alaska · 961 days ago · 35 km deep · 34 km away
  27. 2.548 km SE of Atka, Alaska · 961 days ago · 9 km deep · 98 km away
  28. 3.5159 km ENE of Atka, Alaska · 959 days ago · 193 km deep · 86 km away
  29. 3.2174 km E of Atka, Alaska · 959 days ago · 35 km deep · 36 km away
  30. 3.8104 km ENE of Atka, Alaska · 959 days ago · 162 km deep · 71 km away
  31. 2.491 km E of Atka, Alaska · 959 days ago · 26 km deep · 49 km away
  32. 3.5176 km WSW of Nikolski, Alaska · 957 days ago · 10 km deep · 77 km away
  33. 3.8168 km E of Atka, Alaska · 956 days ago · 10 km deep · 31 km away
  34. 3.466 km E of Atka, Alaska · 955 days ago · 87 km deep · 74 km away
  35. 3.2197 km ESE of Atka, Alaska · 955 days ago · 35 km deep · 58 km away
  36. 3.072 km ESE of Atka, Alaska · 952 days ago · 69 km deep · 67 km away

Before

  1. 2.879 km ESE of Atka, Alaska · 1011 days ago · 35 km deep · 63 km away
  2. 3.365 km ENE of Atka, Alaska · 1011 days ago · 183 km deep · 90 km away
  3. 3.5100 km ESE of Atka, Alaska · 1016 days ago · 35 km deep · 55 km away
  4. 3.863 km E of Atka, Alaska · 1020 days ago · 77 km deep · 77 km away
  5. 3.3164 km WSW of Nikolski, Alaska · 1027 days ago · 73 km deep · 88 km away
  6. 3.8190 km E of Atka, Alaska · 1028 days ago · 35 km deep · 52 km away
  7. 3.087 km ESE of Atka, Alaska · 1031 days ago · 35 km deep · 65 km away
  8. 3.570 km E of Atka, Alaska · 1033 days ago · 159 km deep · 72 km away
  9. 3.264 km E of Atka, Alaska · 1034 days ago · 116 km deep · 83 km away
  10. 3.182 km SE of Atka, Alaska · 1035 days ago · 35 km deep · 97 km away
  11. 2.277 km ESE of Atka, Alaska · 1035 days ago · 45 km deep · 67 km away
  12. 3.249 km ESE of Atka, Alaska · 1039 days ago · 8 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000m4kq (also filed as ak023goeho34). Read Sat, Oct 3, 2026, 6:44 PM UTC.