Alaska earthquakes

M2.6 earthquake 247 km SW of Adak, Alaska

A magnitude 2.6 earthquake struck 247 km SW of Adak, Alaska on Wed, Aug 2, 2023, 11:12 PM GMT-12 (11:12 UTC), 39 km (24 mi) below the surface.

A larger quake followed: M4.7 149 km SW of Adak, 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
2023-08-03 11:12:57 UTC
Depth
39.4 km (24.5 mi), shallow
Epicenter
50.426° N, 179.328° 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
2.6ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 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 6.9 km horizontally, 27.7 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
253°, poorly surrounded by stations
Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 52 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 2.2Andreanof Islands, Aleutian Islands, Alaska · 1153 days ago · 13 km deep · 76 km away
  2. 1.9254 km WSW of Adak, Alaska · 1152 days ago · 14 km deep · 89 km away
  3. 1.9233 km WSW of Adak, Alaska · 1149 days ago · 16 km deep · 80 km away
  4. 2.6280 km SW of Adak, Alaska · 1148 days ago · 10 km deep · 70 km away
  5. 2.3244 km WSW of Adak, Alaska · 1148 days ago · 26 km deep · 88 km away
  6. 1.8196 km WSW of Adak, Alaska · 1146 days ago · 39 km deep · 100 km away
  7. 2.7Rat Islands, Aleutian Islands, Alaska · 1146 days ago · 5 km deep · 76 km away
  8. 1.9159 km SW of Adak, Alaska · 1145 days ago · 18 km deep · 92 km away
  9. 3.0274 km SW of Adak, Alaska · 1145 days ago · 10 km deep · 60 km away
  10. 2.5Rat Islands, Aleutian Islands, Alaska · 1144 days ago · 10 km deep · 61 km away
  11. 4.7149 km SW of Adak, Alaska · 1144 days ago · 10 km deep · 100 km away
  12. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1144 days ago · 25 km deep · 91 km away
  13. 1.7186 km WSW of Adak, Alaska · 1143 days ago · 25 km deep · 83 km away
  14. 1.9264 km WSW of Adak, Alaska · 1141 days ago · 12 km deep · 99 km away
  15. 2.4244 km SSW of Adak, Alaska · 1140 days ago · 10 km deep · 95 km away
  16. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1139 days ago · 23 km deep · 87 km away
  17. 1.6156 km WSW of Adak, Alaska · 1137 days ago · 25 km deep · 98 km away
  18. 1.6234 km WSW of Adak, Alaska · 1136 days ago · 16 km deep · 80 km away
  19. 1.9190 km SW of Adak, Alaska · 1135 days ago · 5 km deep · 80 km away
  20. 1.7194 km WSW of Adak, Alaska · 1135 days ago · 17 km deep · 79 km away
  21. 2.7274 km SW of Adak, Alaska · 1134 days ago · 10 km deep · 27 km away
  22. 2.1227 km WSW of Adak, Alaska · 1132 days ago · 13 km deep · 83 km away
  23. 2.0235 km WSW of Adak, Alaska · 1132 days ago · 16 km deep · 79 km away
  24. 1.6232 km WSW of Adak, Alaska · 1132 days ago · 26 km deep · 77 km away
  25. 2.2166 km WSW of Adak, Alaska · 1131 days ago · 19 km deep · 90 km away
  26. 3.0152 km WSW of Adak, Alaska · 1128 days ago · 35 km deep · 99 km away
  27. 2.3175 km WSW of Adak, Alaska · 1128 days ago · 22 km deep · 87 km away
  28. 2.3157 km WSW of Adak, Alaska · 1128 days ago · 35 km deep · 95 km away
  29. 1.9171 km WSW of Adak, Alaska · 1127 days ago · 13 km deep · 89 km away
  30. 2.2240 km WSW of Adak, Alaska · 1125 days ago · 13 km deep · 79 km away
  31. 2.2169 km WSW of Adak, Alaska · 1125 days ago · 26 km deep · 89 km away
  32. 1.9239 km WSW of Adak, Alaska · 1124 days ago · 13 km deep · 91 km away
  33. 2.8204 km WSW of Adak, Alaska · 1123 days ago · 35 km deep · 66 km away
  34. 3.0214 km WSW of Adak, Alaska · 1119 days ago · 10 km deep · 53 km away
  35. 3.1264 km SW of Adak, Alaska · 1119 days ago · 10 km deep · 68 km away
  36. 4.0201 km WSW of Adak, Alaska · 1119 days ago · 46 km deep · 77 km away
  37. 2.4Rat Islands, Aleutian Islands, Alaska · 1118 days ago · 10 km deep · 58 km away
  38. 2.8185 km WSW of Adak, Alaska · 1118 days ago · 35 km deep · 81 km away
  39. 2.0235 km WSW of Adak, Alaska · 1115 days ago · 13 km deep · 72 km away
  40. 2.0237 km WSW of Adak, Alaska · 1115 days ago · 12 km deep · 69 km away
  41. 2.0236 km WSW of Adak, Alaska · 1115 days ago · 14 km deep · 72 km away
  42. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1115 days ago · 13 km deep · 68 km away
  43. 3.8209 km WSW of Adak, Alaska · 1114 days ago · 51 km deep · 92 km away
  44. 2.3236 km WSW of Adak, Alaska · 1114 days ago · 13 km deep · 70 km away
  45. 2.2190 km WSW of Adak, Alaska · 1112 days ago · 13 km deep · 88 km away
  46. 2.0237 km WSW of Adak, Alaska · 1111 days ago · 14 km deep · 68 km away
  47. 2.5Andreanof Islands, Aleutian Islands, Alaska · 1111 days ago · 14 km deep · 69 km away
  48. 2.4163 km SW of Adak, Alaska · 1111 days ago · 13 km deep · 86 km away
  49. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1109 days ago · 21 km deep · 85 km away
  50. 2.9Rat Islands, Aleutian Islands, Alaska · 1106 days ago · 10 km deep · 82 km away
  51. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1106 days ago · 26 km deep · 99 km away
  52. 2.1248 km WSW of Adak, Alaska · 1102 days ago · 13 km deep · 85 km away

Before

  1. 3.3155 km WSW of Adak, Alaska · 1157 days ago · 31 km deep · 98 km away
  2. 2.2Rat Islands, Aleutian Islands, Alaska · 1159 days ago · 26 km deep · 77 km away
  3. 1.8194 km WSW of Adak, Alaska · 1160 days ago · 22 km deep · 91 km away
  4. 2.8183 km WSW of Adak, Alaska · 1160 days ago · 31 km deep · 82 km away
  5. 2.8Rat Islands, Aleutian Islands, Alaska · 1160 days ago · 10 km deep · 65 km away
  6. 1.9211 km WSW of Adak, Alaska · 1160 days ago · 26 km deep · 96 km away
  7. 1.8242 km WSW of Adak, Alaska · 1162 days ago · 13 km deep · 83 km away
  8. 2.2241 km WSW of Adak, Alaska · 1163 days ago · 8 km deep · 75 km away
  9. 1.7186 km WSW of Adak, Alaska · 1163 days ago · 23 km deep · 84 km away
  10. 2.7220 km WSW of Adak, Alaska · 1164 days ago · 35 km deep · 71 km away
  11. 3.6191 km WSW of Adak, Alaska · 1165 days ago · 27 km deep · 89 km away
  12. 2.8198 km WSW of Adak, Alaska · 1166 days ago · 35 km deep · 72 km away
  13. 2.5157 km WSW of Adak, Alaska · 1167 days ago · 35 km deep · 96 km away
  14. 2.1201 km WSW of Adak, Alaska · 1168 days ago · 13 km deep · 73 km away
  15. 2.3155 km SW of Adak, Alaska · 1169 days ago · 15 km deep · 95 km away
  16. 2.2207 km SSW of Adak, Alaska · 1174 days ago · 0 km deep · 82 km away
  17. 2.7153 km WSW of Adak, Alaska · 1176 days ago · 35 km deep · 99 km away
  18. 3.5268 km SSW of Adak, Alaska · 1178 days ago · 17 km deep · 71 km away
  19. 1.8234 km WSW of Adak, Alaska · 1179 days ago · 13 km deep · 81 km away
  20. 3.1214 km WSW of Adak, Alaska · 1180 days ago · 16 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000knsb (also filed as ak0239vr62bb). Read Fri, Oct 2, 2026, 4:30 PM UTC.