Alaska earthquakes

M2.6 earthquake 299 km WSW of Adak, Alaska

A magnitude 2.6 earthquake struck 299 km WSW of Adak, Alaska on Mon, Oct 23, 2023, 11:16 PM GMT+12 (11:16 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 Rat Islands, Aleutian Islands, 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
2.6 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-10-23 11:16:28 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.735° N, 179.470° 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 · ±0.115 · 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 3.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
270°, poorly surrounded by stations
Stations used
13

Nearby

Within 100 km, magnitude 1.5 and up: 55 in the 60 days after this one and 45 in the 30 days before it.

After

  1. 2.9Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 22 km deep · 32 km away
  2. 2.8297 km WSW of Adak, Alaska · 1075 days ago · 26 km deep · 33 km away
  3. 2.7Rat Islands, Aleutian Islands, Alaska · 1074 days ago · 24 km deep · 35 km away
  4. 2.6Rat Islands, Aleutian Islands, Alaska · 1074 days ago · 24 km deep · 25 km away
  5. 2.6208 km WSW of Adak, Alaska · 1073 days ago · 35 km deep · 91 km away
  6. 2.8263 km WSW of Adak, Alaska · 1073 days ago · 25 km deep · 54 km away
  7. 1.9237 km WSW of Adak, Alaska · 1071 days ago · 22 km deep · 73 km away
  8. 1.9274 km W of Adak, Alaska · 1070 days ago · 54 km deep · 83 km away
  9. 2.7288 km WSW of Adak, Alaska · 1070 days ago · 58 km deep · 78 km away
  10. 2.7224 km WSW of Adak, Alaska · 1069 days ago · 25 km deep · 79 km away
  11. 3.3Rat Islands, Aleutian Islands, Alaska · 1068 days ago · 10 km deep · 60 km away
  12. 3.1Rat Islands, Aleutian Islands, Alaska · 1066 days ago · 10 km deep · 72 km away
  13. 2.3299 km WSW of Adak, Alaska · 1066 days ago · 23 km deep · 43 km away
  14. 2.1276 km WSW of Adak, Alaska · 1066 days ago · 15 km deep · 31 km away
  15. 1.8235 km WSW of Adak, Alaska · 1065 days ago · 18 km deep · 79 km away
  16. 3.5233 km WSW of Adak, Alaska · 1064 days ago · 60 km deep · 82 km away
  17. 3.4241 km WSW of Adak, Alaska · 1063 days ago · 24 km deep · 62 km away
  18. 2.6222 km WSW of Adak, Alaska · 1063 days ago · 74 km deep · 99 km away
  19. 2.7260 km WSW of Adak, Alaska · 1063 days ago · 74 km deep · 82 km away
  20. 3.4Rat Islands, Aleutian Islands, Alaska · 1063 days ago · 29 km deep · 50 km away
  21. 4.1Rat Islands, Aleutian Islands, Alaska · 1063 days ago · 35 km deep · 59 km away
  22. 2.8288 km WSW of Adak, Alaska · 1059 days ago · 32 km deep · 54 km away
  23. 3.6219 km WSW of Adak, Alaska · 1058 days ago · 35 km deep · 82 km away
  24. 2.8220 km WSW of Adak, Alaska · 1056 days ago · 35 km deep · 79 km away
  25. 2.9212 km WSW of Adak, Alaska · 1056 days ago · 10 km deep · 87 km away
  26. 2.2258 km WSW of Adak, Alaska · 1055 days ago · 26 km deep · 70 km away
  27. 2.5241 km WSW of Adak, Alaska · 1050 days ago · 73 km deep · 90 km away
  28. 2.6241 km WSW of Adak, Alaska · 1050 days ago · 10 km deep · 89 km away
  29. 1.9Rat Islands, Aleutian Islands, Alaska · 1050 days ago · 24 km deep · 92 km away
  30. 2.1243 km W of Adak, Alaska · 1050 days ago · 7 km deep · 92 km away
  31. 1.9247 km W of Adak, Alaska · 1050 days ago · 23 km deep · 92 km away
  32. 2.8243 km WSW of Adak, Alaska · 1049 days ago · 10 km deep · 86 km away
  33. 2.7243 km WSW of Adak, Alaska · 1049 days ago · 9 km deep · 89 km away
  34. 3.1254 km WSW of Adak, Alaska · 1049 days ago · 26 km deep · 61 km away
  35. 2.1240 km W of Adak, Alaska · 1049 days ago · 7 km deep · 95 km away
  36. 4.1Rat Islands, Aleutian Islands, Alaska · 1049 days ago · 10 km deep · 65 km away
  37. 2.6239 km WSW of Adak, Alaska · 1049 days ago · 10 km deep · 90 km away
  38. 2.1242 km W of Adak, Alaska · 1049 days ago · 6 km deep · 92 km away
  39. 2.5240 km W of Adak, Alaska · 1048 days ago · 10 km deep · 91 km away
  40. 3.1239 km WSW of Adak, Alaska · 1048 days ago · 16 km deep · 63 km away
  41. 3.0Rat Islands, Aleutian Islands, Alaska · 1042 days ago · 35 km deep · 99 km away
  42. 3.8292 km WSW of Adak, Alaska · 1040 days ago · 35 km deep · 26 km away
  43. 3.0Rat Islands, Aleutian Islands, Alaska · 1034 days ago · 10 km deep · 61 km away
  44. 3.3Rat Islands, Aleutian Islands, Alaska · 1030 days ago · 10 km deep · 97 km away
  45. 2.0260 km WSW of Adak, Alaska · 1030 days ago · 21 km deep · 56 km away
  46. 3.1202 km WSW of Adak, Alaska · 1029 days ago · 21 km deep · 98 km away
  47. 2.3297 km WSW of Adak, Alaska · 1029 days ago · 22 km deep · 46 km away
  48. 4.3Rat Islands, Aleutian Islands, Alaska · 1028 days ago · 35 km deep · 43 km away
  49. 4.0Rat Islands, Aleutian Islands, Alaska · 1028 days ago · 35 km deep · 45 km away
  50. 3.9Rat Islands, Aleutian Islands, Alaska · 1028 days ago · 35 km deep · 40 km away
  51. 2.8287 km WSW of Adak, Alaska · 1028 days ago · 19 km deep · 60 km away
  52. 3.5252 km WSW of Adak, Alaska · 1027 days ago · 35 km deep · 70 km away
  53. 2.4Rat Islands, Aleutian Islands, Alaska · 1024 days ago · 38 km deep · 71 km away
  54. 3.0249 km WSW of Adak, Alaska · 1021 days ago · 70 km deep · 86 km away
  55. 3.9235 km WSW of Adak, Alaska · 1017 days ago · 46 km deep · 65 km away

Before

  1. 2.8Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 10 km deep · 32 km away
  2. 3.2298 km WSW of Adak, Alaska · 1075 days ago · 25 km deep · 40 km away
  3. 2.8291 km WSW of Adak, Alaska · 1075 days ago · 24 km deep · 34 km away
  4. 2.9Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 26 km deep · 38 km away
  5. 3.9298 km WSW of Adak, Alaska · 1075 days ago · 35 km deep · 40 km away
  6. 2.9Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 27 km deep · 45 km away
  7. 3.3Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 24 km deep · 40 km away
  8. 3.0Rat Islands, Aleutian Islands, Alaska · 1075 days ago · 31 km deep · 46 km away
  9. 4.0Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 10 km deep · 76 km away
  10. 2.8Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 45 km deep · 88 km away
  11. 3.1Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 10 km deep · 52 km away
  12. 3.2Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 26 km deep · 37 km away
  13. 3.1Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 10 km deep · 79 km away
  14. 2.3Rat Islands, Aleutian Islands, Alaska · 1076 days ago · 20 km deep · 37 km away
  15. 3.0299 km WSW of Adak, Alaska · 1077 days ago · 26 km deep · 31 km away
  16. 2.8275 km W of Adak, Alaska · 1080 days ago · 75 km deep · 98 km away
  17. 3.3Rat Islands, Aleutian Islands, Alaska · 1080 days ago · 54 km deep · 100 km away
  18. 1.8Rat Islands, Aleutian Islands, Alaska · 1081 days ago · 21 km deep · 67 km away
  19. 3.0286 km WSW of Adak, Alaska · 1081 days ago · 31 km deep · 78 km away
  20. 3.1Rat Islands, Aleutian Islands, Alaska · 1087 days ago · 35 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000l9s2 (also filed as ak023dlppzyf). Read Fri, Oct 2, 2026, 1:11 AM UTC.