Alaska earthquakes

M2.6 earthquake 243 km W of Adak, Alaska

A magnitude 2.6 earthquake struck 243 km W of Adak, Alaska on Tue, Sep 26, 2023, 11:02 AM GMT+12 (23:02 UTC), 144 km (90 mi) below the surface.

A larger quake followed: M4.2 Rat Islands, Aleutian Islands, 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
2.6 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-09-25 23:02:26 UTC
Depth
144.3 km (89.7 mi), intermediate-depth
Epicenter
51.903° N, 179.829° E
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
2.6ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 stations
2.2ML, 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 7.3 km horizontally, 4.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
150°
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: 110 in the 60 days after this one and 75 in the 30 days before it.

After

  1. 2.6209 km W of Adak, Alaska · 1101 days ago · 171 km deep · 41 km away
  2. 1.8181 km WSW of Adak, Alaska · 1101 days ago · 56 km deep · 84 km away
  3. 1.9218 km W of Adak, Alaska · 1101 days ago · 76 km deep · 39 km away
  4. 2.1248 km WSW of Adak, Alaska · 1100 days ago · 13 km deep · 93 km away
  5. 2.8Rat Islands, Aleutian Islands, Alaska · 1100 days ago · 110 km deep · 86 km away
  6. 2.6243 km WSW of Adak, Alaska · 1099 days ago · 63 km deep · 51 km away
  7. 2.7227 km W of Adak, Alaska · 1099 days ago · 174 km deep · 24 km away
  8. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1098 days ago · 41 km deep · 74 km away
  9. 2.9249 km WSW of Adak, Alaska · 1097 days ago · 65 km deep · 58 km away
  10. 2.5Rat Islands, Aleutian Islands, Alaska · 1097 days ago · 77 km deep · 73 km away
  11. 2.7221 km WSW of Adak, Alaska · 1097 days ago · 56 km deep · 75 km away
  12. 2.8Rat Islands, Aleutian Islands, Alaska · 1097 days ago · 93 km deep · 87 km away
  13. 2.1189 km WSW of Adak, Alaska · 1096 days ago · 23 km deep · 91 km away
  14. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1095 days ago · 18 km deep · 81 km away
  15. 2.5Rat Islands, Aleutian Islands, Alaska · 1095 days ago · 72 km deep · 76 km away
  16. 2.1275 km W of Adak, Alaska · 1095 days ago · 67 km deep · 45 km away
  17. 3.2190 km WSW of Adak, Alaska · 1093 days ago · 35 km deep · 89 km away
  18. 1.7247 km WSW of Adak, Alaska · 1091 days ago · 15 km deep · 78 km away
  19. 2.2150 km W of Adak, Alaska · 1091 days ago · 142 km deep · 92 km away
  20. 2.1198 km W of Adak, Alaska · 1091 days ago · 91 km deep · 45 km away
  21. 1.9271 km W of Adak, Alaska · 1091 days ago · 56 km deep · 50 km away
  22. 2.1187 km W of Adak, Alaska · 1090 days ago · 74 km deep · 62 km away
  23. 3.4Rat Islands, Aleutian Islands, Alaska · 1089 days ago · 10 km deep · 71 km away
  24. 2.7Rat Islands, Aleutian Islands, Alaska · 1088 days ago · 100 km deep · 92 km away
  25. 3.8Rat Islands, Aleutian Islands, Alaska · 1088 days ago · 33 km deep · 66 km away
  26. 1.9277 km W of Adak, Alaska · 1088 days ago · 59 km deep · 50 km away
  27. 2.7175 km WSW of Adak, Alaska · 1087 days ago · 30 km deep · 93 km away
  28. 2.8Rat Islands, Aleutian Islands, Alaska · 1087 days ago · 18 km deep · 78 km away
  29. 1.9180 km WSW of Adak, Alaska · 1086 days ago · 24 km deep · 91 km away
  30. 2.8Rat Islands, Aleutian Islands, Alaska · 1083 days ago · 105 km deep · 95 km away
  31. 2.6186 km WSW of Adak, Alaska · 1083 days ago · 33 km deep · 83 km away
  32. 3.0286 km WSW of Adak, Alaska · 1080 days ago · 31 km deep · 65 km away
  33. 2.1175 km W of Adak, Alaska · 1080 days ago · 64 km deep · 79 km away
  34. 1.6260 km W of Adak, Alaska · 1080 days ago · 25 km deep · 31 km away
  35. 1.8Rat Islands, Aleutian Islands, Alaska · 1080 days ago · 21 km deep · 94 km away
  36. 1.6Rat Islands, Aleutian Islands, Alaska · 1080 days ago · 47 km deep · 65 km away
  37. 2.2201 km W of Adak, Alaska · 1080 days ago · 76 km deep · 51 km away
  38. 3.3Rat Islands, Aleutian Islands, Alaska · 1079 days ago · 54 km deep · 95 km away
  39. 2.8275 km W of Adak, Alaska · 1079 days ago · 75 km deep · 44 km away
  40. 2.8Rat Islands, Aleutian Islands, Alaska · 1079 days ago · 118 km deep · 91 km away
  41. 2.1Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 5 km deep · 95 km away
  42. 1.9192 km WSW of Adak, Alaska · 1075 days ago · 18 km deep · 95 km away
  43. 2.8Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 45 km deep · 90 km away
  44. 2.1183 km W of Adak, Alaska · 1075 days ago · 90 km deep · 64 km away
  45. 3.0Rat Islands, Aleutian Islands, Alaska · 1074 days ago · 31 km deep · 99 km away
  46. 2.9234 km W of Adak, Alaska · 1074 days ago · 173 km deep · 18 km away
  47. 3.6184 km WSW of Adak, Alaska · 1073 days ago · 95 km deep · 77 km away
  48. 1.9Rat Islands, Aleutian Islands, Alaska · 1073 days ago · 71 km deep · 69 km away
  49. 2.8204 km W of Adak, Alaska · 1073 days ago · 92 km deep · 46 km away
  50. 2.8263 km WSW of Adak, Alaska · 1073 days ago · 25 km deep · 79 km away
  51. 2.5Rat Islands, Aleutian Islands, Alaska · 1072 days ago · 82 km deep · 92 km away
  52. 2.4Rat Islands, Aleutian Islands, Alaska · 1072 days ago · 83 km deep · 84 km away
  53. 3.3206 km W of Adak, Alaska · 1072 days ago · 106 km deep · 38 km away
  54. 2.6Rat Islands, Aleutian Islands, Alaska · 1071 days ago · 94 km deep · 83 km away
  55. 1.8212 km W of Adak, Alaska · 1071 days ago · 65 km deep · 46 km away
  56. 2.0202 km WSW of Adak, Alaska · 1071 days ago · 60 km deep · 67 km away
  57. 1.9237 km WSW of Adak, Alaska · 1070 days ago · 22 km deep · 72 km away
  58. 1.7Rat Islands, Aleutian Islands, Alaska · 1070 days ago · 70 km deep · 91 km away
  59. 1.9274 km W of Adak, Alaska · 1070 days ago · 54 km deep · 54 km away
  60. 2.7Rat Islands, Aleutian Islands, Alaska · 1069 days ago · 112 km deep · 84 km away

The first 60 of 110.

Before

  1. 2.9298 km W of Adak, Alaska · 1102 days ago · 87 km deep · 57 km away
  2. 3.9282 km W of Adak, Alaska · 1103 days ago · 71 km deep · 54 km away
  3. 1.5266 km W of Adak, Alaska · 1103 days ago · 13 km deep · 50 km away
  4. 2.0Rat Islands, Aleutian Islands, Alaska · 1103 days ago · 67 km deep · 76 km away
  5. 2.3Rat Islands, Aleutian Islands, Alaska · 1103 days ago · 31 km deep · 91 km away
  6. 1.8230 km W of Adak, Alaska · 1104 days ago · 13 km deep · 23 km away
  7. 3.8184 km WSW of Adak, Alaska · 1104 days ago · 61 km deep · 94 km away
  8. 2.3Rat Islands, Aleutian Islands, Alaska · 1106 days ago · 98 km deep · 94 km away
  9. 1.9214 km W of Adak, Alaska · 1106 days ago · 7 km deep · 37 km away
  10. 3.2Rat Islands, Aleutian Islands, Alaska · 1107 days ago · 146 km deep · 9 km away
  11. 2.2Rat Islands, Aleutian Islands, Alaska · 1107 days ago · 35 km deep · 84 km away
  12. 2.1Rat Islands, Aleutian Islands, Alaska · 1107 days ago · 96 km deep · 83 km away
  13. 4.2Rat Islands, Aleutian Islands, Alaska · 1107 days ago · 120 km deep · 97 km away
  14. 2.9243 km W of Adak, Alaska · 1108 days ago · 90 km deep · 21 km away
  15. 1.7213 km W of Adak, Alaska · 1108 days ago · 13 km deep · 38 km away
  16. 3.1209 km WSW of Adak, Alaska · 1109 days ago · 35 km deep · 77 km away
  17. 2.8233 km WSW of Adak, Alaska · 1109 days ago · 66 km deep · 53 km away
  18. 2.8Andreanof Islands, Aleutian Islands, Alaska · 1110 days ago · 119 km deep · 64 km away
  19. 2.0Rat Islands, Aleutian Islands, Alaska · 1110 days ago · 66 km deep · 80 km away
  20. 2.7Rat Islands, Aleutian Islands, Alaska · 1110 days ago · 34 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000ldu4 (also filed as ak023cblqgr4). Read Thu, Oct 1, 2026, 6:48 AM UTC.