Alaska earthquakes

M2.6 earthquake 252 km WSW of Adak, Alaska

A magnitude 2.6 earthquake struck 252 km WSW of Adak, Alaska on Fri, Jul 28, 2023, 4:27 PM GMT+12 (04:27 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.0 229 km W 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
2.6 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-07-28 04:27:32 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
51.282° N, 179.855° 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
2.1ML, 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 2.7 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
211°, poorly surrounded by stations
Stations used
24

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 104 in the 30 days before it.

After

  1. 2.0235 km WSW of Adak, Alaska · 1162 days ago · 13 km deep · 20 km away
  2. 1.8242 km WSW of Adak, Alaska · 1162 days ago · 13 km deep · 29 km away
  3. 1.5163 km WSW of Adak, Alaska · 1162 days ago · 13 km deep · 88 km away
  4. 2.8Rat Islands, Aleutian Islands, Alaska · 1162 days ago · 63 km deep · 92 km away
  5. 1.9Rat Islands, Aleutian Islands, Alaska · 1161 days ago · 58 km deep · 73 km away
  6. 1.8179 km W of Adak, Alaska · 1161 days ago · 85 km deep · 88 km away
  7. 3.9Rat Islands, Aleutian Islands, Alaska · 1161 days ago · 64 km deep · 88 km away
  8. 1.9211 km WSW of Adak, Alaska · 1160 days ago · 26 km deep · 43 km away
  9. 2.8183 km WSW of Adak, Alaska · 1160 days ago · 31 km deep · 82 km away
  10. 1.8Rat Islands, Aleutian Islands, Alaska · 1160 days ago · 39 km deep · 63 km away
  11. 1.7Rat Islands, Aleutian Islands, Alaska · 1160 days ago · 66 km deep · 63 km away
  12. 1.7265 km W of Adak, Alaska · 1160 days ago · 82 km deep · 65 km away
  13. 2.2224 km W of Adak, Alaska · 1159 days ago · 14 km deep · 68 km away
  14. 1.8194 km WSW of Adak, Alaska · 1159 days ago · 22 km deep · 63 km away
  15. 1.9246 km WSW of Adak, Alaska · 1158 days ago · 21 km deep · 8 km away
  16. 1.7Rat Islands, Aleutian Islands, Alaska · 1158 days ago · 60 km deep · 82 km away
  17. 3.0Rat Islands, Aleutian Islands, Alaska · 1157 days ago · 35 km deep · 77 km away
  18. 1.9238 km WSW of Adak, Alaska · 1157 days ago · 21 km deep · 17 km away
  19. 2.7192 km W of Adak, Alaska · 1156 days ago · 105 km deep · 78 km away
  20. 3.6182 km WSW of Adak, Alaska · 1154 days ago · 35 km deep · 71 km away
  21. 2.1184 km WSW of Adak, Alaska · 1154 days ago · 22 km deep · 69 km away
  22. 2.9Rat Islands, Aleutian Islands, Alaska · 1153 days ago · 63 km deep · 69 km away
  23. 2.2Andreanof Islands, Aleutian Islands, Alaska · 1152 days ago · 13 km deep · 35 km away
  24. 2.0211 km WSW of Adak, Alaska · 1152 days ago · 42 km deep · 41 km away
  25. 1.9254 km WSW of Adak, Alaska · 1151 days ago · 14 km deep · 24 km away
  26. 1.6259 km W of Adak, Alaska · 1151 days ago · 60 km deep · 25 km away
  27. 1.8240 km WSW of Adak, Alaska · 1151 days ago · 66 km deep · 24 km away
  28. 1.9Rat Islands, Aleutian Islands, Alaska · 1151 days ago · 57 km deep · 60 km away
  29. 2.7Rat Islands, Aleutian Islands, Alaska · 1150 days ago · 20 km deep · 74 km away
  30. 1.8Rat Islands, Aleutian Islands, Alaska · 1150 days ago · 13 km deep · 73 km away
  31. 1.9164 km WSW of Adak, Alaska · 1149 days ago · 17 km deep · 88 km away
  32. 2.1192 km WSW of Adak, Alaska · 1149 days ago · 68 km deep · 62 km away
  33. 1.5178 km W of Adak, Alaska · 1149 days ago · 9 km deep · 77 km away
  34. 1.9233 km WSW of Adak, Alaska · 1148 days ago · 16 km deep · 34 km away
  35. 1.8161 km W of Adak, Alaska · 1148 days ago · 111 km deep · 98 km away
  36. 2.3244 km WSW of Adak, Alaska · 1148 days ago · 26 km deep · 23 km away
  37. 1.8187 km WSW of Adak, Alaska · 1148 days ago · 24 km deep · 66 km away
  38. 1.7166 km W of Adak, Alaska · 1147 days ago · 8 km deep · 93 km away
  39. 2.0258 km WSW of Adak, Alaska · 1147 days ago · 5 km deep · 15 km away
  40. 2.8Rat Islands, Aleutian Islands, Alaska · 1147 days ago · 57 km deep · 78 km away
  41. 1.8Rat Islands, Aleutian Islands, Alaska · 1147 days ago · 51 km deep · 64 km away
  42. 2.9Rat Islands, Aleutian Islands, Alaska · 1146 days ago · 28 km deep · 63 km away
  43. 2.7263 km W of Adak, Alaska · 1146 days ago · 196 km deep · 91 km away
  44. 1.6Rat Islands, Aleutian Islands, Alaska · 1146 days ago · 20 km deep · 60 km away
  45. 1.6241 km WSW of Adak, Alaska · 1146 days ago · 13 km deep · 11 km away
  46. 2.1211 km W of Adak, Alaska · 1146 days ago · 143 km deep · 81 km away
  47. 2.1Rat Islands, Aleutian Islands, Alaska · 1146 days ago · 73 km deep · 90 km away
  48. 1.8196 km WSW of Adak, Alaska · 1146 days ago · 39 km deep · 57 km away
  49. 1.5197 km W of Adak, Alaska · 1146 days ago · 13 km deep · 69 km away
  50. 1.9202 km W of Adak, Alaska · 1146 days ago · 78 km deep · 58 km away
  51. 2.2212 km WSW of Adak, Alaska · 1146 days ago · 55 km deep · 40 km away
  52. 3.1291 km W of Adak, Alaska · 1145 days ago · 86 km deep · 70 km away
  53. 2.3190 km W of Adak, Alaska · 1145 days ago · 152 km deep · 100 km away
  54. 2.3Rat Islands, Aleutian Islands, Alaska · 1145 days ago · 64 km deep · 80 km away
  55. 2.1242 km W of Adak, Alaska · 1145 days ago · 156 km deep · 64 km away
  56. 1.8Rat Islands, Aleutian Islands, Alaska · 1144 days ago · 68 km deep · 81 km away
  57. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1144 days ago · 14 km deep · 32 km away
  58. 3.0261 km WSW of Adak, Alaska · 1144 days ago · 28 km deep · 10 km away
  59. 2.0Rat Islands, Aleutian Islands, Alaska · 1144 days ago · 44 km deep · 93 km away
  60. 2.0230 km W of Adak, Alaska · 1144 days ago · 102 km deep · 61 km away

The first 60 of 195.

Before

  1. 2.2241 km WSW of Adak, Alaska · 1162 days ago · 8 km deep · 37 km away
  2. 1.5238 km WSW of Adak, Alaska · 1162 days ago · 13 km deep · 17 km away
  3. 1.5235 km WSW of Adak, Alaska · 1162 days ago · 13 km deep · 19 km away
  4. 1.8208 km W of Adak, Alaska · 1162 days ago · 88 km deep · 65 km away
  5. 1.7Rat Islands, Aleutian Islands, Alaska · 1163 days ago · 79 km deep · 94 km away
  6. 1.7186 km WSW of Adak, Alaska · 1163 days ago · 23 km deep · 76 km away
  7. 2.7220 km WSW of Adak, Alaska · 1164 days ago · 35 km deep · 50 km away
  8. 1.7178 km W of Adak, Alaska · 1164 days ago · 7 km deep · 82 km away
  9. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1165 days ago · 86 km deep · 60 km away
  10. 3.0Rat Islands, Aleutian Islands, Alaska · 1165 days ago · 35 km deep · 64 km away
  11. 3.6191 km WSW of Adak, Alaska · 1165 days ago · 27 km deep · 67 km away
  12. 2.8198 km WSW of Adak, Alaska · 1166 days ago · 35 km deep · 71 km away
  13. 2.7Rat Islands, Aleutian Islands, Alaska · 1166 days ago · 113 km deep · 97 km away
  14. 2.0210 km W of Adak, Alaska · 1166 days ago · 83 km deep · 51 km away
  15. 2.7243 km WSW of Adak, Alaska · 1166 days ago · 65 km deep · 8 km away
  16. 2.0291 km WSW of Adak, Alaska · 1166 days ago · 17 km deep · 42 km away
  17. 2.8277 km W of Adak, Alaska · 1167 days ago · 178 km deep · 72 km away
  18. 2.9Rat Islands, Aleutian Islands, Alaska · 1167 days ago · 27 km deep · 51 km away
  19. 2.0Rat Islands, Aleutian Islands, Alaska · 1167 days ago · 56 km deep · 90 km away
  20. 3.8Rat Islands, Aleutian Islands, Alaska · 1167 days ago · 48 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kxxa (also filed as ak0239lpv4ss). Read Fri, Oct 2, 2026, 6:03 AM UTC.