Alaska earthquakes

M2.9 earthquake 89 km NW of Atka, Alaska

A magnitude 2.9 earthquake struck 89 km NW of Atka, Alaska on Wed, Aug 30, 2023, 3:47 PM HADT (00:47 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 94 km NNE of Adak, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-08-31 00:47:50 UTC
Depth
10.1 km (6.3 mi), shallow
Epicenter
52.811° N, 175.041° 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
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.148 · 6 stations
2.8ML, 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 10.1 km horizontally, 8.8 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
329°, poorly surrounded by stations
Stations used
12

Nearby

Within 100 km, magnitude 1.5 and up: 44 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 2.88 km SW of Atka, Alaska · 1127 days ago · 162 km deep · 90 km away
  2. 2.846 km N of Atka, Alaska · 1124 days ago · 197 km deep · 59 km away
  3. 2.053 km NE of Adak, Alaska · 1123 days ago · 132 km deep · 97 km away
  4. 2.082 km W of Atka, Alaska · 1122 days ago · 107 km deep · 82 km away
  5. 2.935 km WNW of Atka, Alaska · 1122 days ago · 202 km deep · 63 km away
  6. 3.217 km NNW of Atka, Alaska · 1120 days ago · 177 km deep · 71 km away
  7. 3.245 km NNW of Atka, Alaska · 1117 days ago · 180 km deep · 48 km away
  8. 3.3101 km NNE of Adak, Alaska · 1114 days ago · 200 km deep · 59 km away
  9. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1113 days ago · 203 km deep · 49 km away
  10. 3.9Andreanof Islands, Aleutian Islands, Alaska · 1112 days ago · 85 km deep · 86 km away
  11. 3.055 km NNE of Atka, Alaska · 1112 days ago · 184 km deep · 86 km away
  12. 1.610 km SSW of Atka, Alaska · 1111 days ago · 9 km deep · 95 km away
  13. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1109 days ago · 1 km deep · 79 km away
  14. 3.244 km N of Atka, Alaska · 1107 days ago · 219 km deep · 57 km away
  15. 3.944 km NNW of Atka, Alaska · 1105 days ago · 202 km deep · 48 km away
  16. 2.037 km NW of Atka, Alaska · 1104 days ago · 150 km deep · 53 km away
  17. 2.696 km WNW of Atka, Alaska · 1101 days ago · 198 km deep · 29 km away
  18. 1.616 km WNW of Atka, Alaska · 1098 days ago · 10 km deep · 74 km away
  19. 2.742 km W of Atka, Alaska · 1098 days ago · 10 km deep · 73 km away
  20. 1.660 km WSW of Atka, Alaska · 1097 days ago · 66 km deep · 93 km away
  21. 2.949 km N of Atka, Alaska · 1097 days ago · 206 km deep · 61 km away
  22. 1.647 km W of Atka, Alaska · 1094 days ago · 13 km deep · 74 km away
  23. 4.048 km N of Atka, Alaska · 1094 days ago · 177 km deep · 60 km away
  24. 2.962 km WNW of Atka, Alaska · 1093 days ago · 201 km deep · 49 km away
  25. 3.519 km N of Atka, Alaska · 1092 days ago · 203 km deep · 74 km away
  26. 2.152 km ENE of Adak, Alaska · 1091 days ago · 122 km deep · 100 km away
  27. 4.194 km NNE of Adak, Alaska · 1090 days ago · 213 km deep · 61 km away
  28. 1.645 km NNE of Atka, Alaska · 1090 days ago · 20 km deep · 86 km away
  29. 2.553 km NNE of Adak, Alaska · 1089 days ago · 161 km deep · 99 km away
  30. 2.182 km ENE of Adak, Alaska · 1089 days ago · 100 km deep · 78 km away
  31. 1.619 km WNW of Atka, Alaska · 1086 days ago · 6 km deep · 74 km away
  32. 2.078 km W of Atka, Alaska · 1085 days ago · 106 km deep · 72 km away
  33. 3.467 km WSW of Atka, Alaska · 1085 days ago · 84 km deep · 97 km away
  34. 3.236 km N of Atka, Alaska · 1083 days ago · 201 km deep · 60 km away
  35. 2.381 km ENE of Adak, Alaska · 1081 days ago · 137 km deep · 83 km away
  36. 3.039 km NNW of Atka, Alaska · 1081 days ago · 185 km deep · 51 km away
  37. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1080 days ago · 10 km deep · 67 km away
  38. 4.126 km NNE of Atka, Alaska · 1079 days ago · 119 km deep · 81 km away
  39. 3.3100 km NE of Adak, Alaska · 1077 days ago · 205 km deep · 51 km away
  40. 4.0113 km WNW of Atka, Alaska · 1076 days ago · 217 km deep · 41 km away
  41. 1.843 km SW of Atka, Alaska · 1075 days ago · 70 km deep · 96 km away
  42. 2.372 km ENE of Adak, Alaska · 1075 days ago · 140 km deep · 81 km away
  43. 1.915 km SSW of Atka, Alaska · 1073 days ago · 83 km deep · 97 km away
  44. 2.054 km WSW of Atka, Alaska · 1072 days ago · 119 km deep · 80 km away

Before

  1. 2.67 km WNW of Atka, Alaska · 1134 days ago · 108 km deep · 83 km away
  2. 1.820 km WSW of Atka, Alaska · 1137 days ago · 12 km deep · 84 km away
  3. 1.682 km WSW of Atka, Alaska · 1137 days ago · 67 km deep · 97 km away
  4. 2.076 km W of Atka, Alaska · 1139 days ago · 98 km deep · 75 km away
  5. 2.979 km NNW of Atka, Alaska · 1140 days ago · 153 km deep · 14 km away
  6. 4.186 km NE of Adak, Alaska · 1142 days ago · 172 km deep · 65 km away
  7. 2.545 km NW of Atka, Alaska · 1144 days ago · 178 km deep · 44 km away
  8. 1.552 km WSW of Atka, Alaska · 1146 days ago · 13 km deep · 83 km away
  9. 2.867 km NE of Adak, Alaska · 1147 days ago · 199 km deep · 83 km away
  10. 2.815 km ENE of Atka, Alaska · 1147 days ago · 157 km deep · 95 km away
  11. 2.019 km WNW of Atka, Alaska · 1148 days ago · 137 km deep · 75 km away
  12. 3.048 km NNE of Atka, Alaska · 1148 days ago · 180 km deep · 84 km away
  13. 2.842 km WSW of Atka, Alaska · 1148 days ago · 90 km deep · 82 km away
  14. 1.981 km WSW of Atka, Alaska · 1149 days ago · 70 km deep · 96 km away
  15. 2.768 km ENE of Adak, Alaska · 1149 days ago · 216 km deep · 96 km away
  16. 2.822 km WNW of Atka, Alaska · 1150 days ago · 174 km deep · 69 km away
  17. 3.229 km NNW of Atka, Alaska · 1153 days ago · 184 km deep · 62 km away
  18. 2.945 km NE of Atka, Alaska · 1153 days ago · 161 km deep · 98 km away
  19. 1.877 km W of Atka, Alaska · 1154 days ago · 82 km deep · 77 km away
  20. 3.133 km NW of Atka, Alaska · 1157 days ago · 169 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kvgr (also filed as ak023b5vving). Read Sun, Oct 4, 2026, 6:55 AM UTC.