Alaska earthquakes

M4.5 earthquake 34 km SSW of Adak, Alaska

A magnitude 4.5 earthquake struck 34 km SSW of Adak, Alaska on Sun, Jun 25, 2023, 10:35 PM HADT (07:35 UTC), 55 km (34 mi) below the surface.

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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
4.5 (mwr), light
Local time
UTC
2023-06-26 07:35:18 UTC
Depth
55.1 km (34.3 mi), shallow
Epicenter
51.605° N, 176.893° W
Region
Alaska
Felt reports
3
Strongest shaking
III, weak shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
III, weak shaking
Peak ground acceleration
0.6% of gravity
Peak ground velocity
-1.2 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

3 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Reverse (thrust)
Moment magnitude
4.5 Mwr
Nodal plane 1
Strike 66°, dip 66°, rake 87°
Nodal plane 2
Strike 253°, dip 24°, rake 96°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.0 km horizontally, 4.6 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
137°
Stations used
185

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 163 in the 30 days before it.

After

  1. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1193 days ago · 34 km deep · 20 km away
  2. 1.690 km SW of Adak, Alaska · 1193 days ago · 26 km deep · 57 km away
  3. 1.565 km SSW of Adak, Alaska · 1192 days ago · 37 km deep · 31 km away
  4. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1192 days ago · 35 km deep · 52 km away
  5. 2.279 km SE of Adak, Alaska · 1192 days ago · 13 km deep · 83 km away
  6. 1.635 km SSE of Adak, Alaska · 1192 days ago · 39 km deep · 36 km away
  7. 1.988 km W of Adak, Alaska · 1191 days ago · 6 km deep · 76 km away
  8. 2.0108 km SW of Adak, Alaska · 1191 days ago · 36 km deep · 77 km away
  9. 2.692 km W of Adak, Alaska · 1191 days ago · 1 km deep · 78 km away
  10. 2.146 km SSW of Adak, Alaska · 1191 days ago · 37 km deep · 17 km away
  11. 1.941 km SSW of Adak, Alaska · 1191 days ago · 59 km deep · 8 km away
  12. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1191 days ago · 8 km deep · 70 km away
  13. 2.991 km W of Adak, Alaska · 1191 days ago · 5 km deep · 77 km away
  14. 3.242 km SSE of Adak, Alaska · 1190 days ago · 33 km deep · 38 km away
  15. 1.693 km W of Adak, Alaska · 1190 days ago · 3 km deep · 80 km away
  16. 1.6128 km SW of Adak, Alaska · 1190 days ago · 18 km deep · 97 km away
  17. 2.845 km SSW of Adak, Alaska · 1190 days ago · 35 km deep · 15 km away
  18. 1.750 km WSW of Adak, Alaska · 1190 days ago · 93 km deep · 31 km away
  19. 1.924 km SSW of Adak, Alaska · 1190 days ago · 71 km deep · 11 km away
  20. 1.997 km WSW of Adak, Alaska · 1190 days ago · 20 km deep · 71 km away
  21. 1.7122 km WSW of Adak, Alaska · 1190 days ago · 18 km deep · 95 km away
  22. 1.533 km SSE of Adak, Alaska · 1190 days ago · 47 km deep · 35 km away
  23. 1.559 km SSE of Adak, Alaska · 1189 days ago · 13 km deep · 54 km away
  24. 1.7115 km WSW of Adak, Alaska · 1189 days ago · 12 km deep · 90 km away
  25. 1.556 km SSW of Adak, Alaska · 1189 days ago · 26 km deep · 22 km away
  26. 1.964 km WSW of Adak, Alaska · 1189 days ago · 66 km deep · 42 km away
  27. 1.692 km W of Adak, Alaska · 1189 days ago · 2 km deep · 80 km away
  28. 1.774 km SW of Adak, Alaska · 1189 days ago · 29 km deep · 43 km away
  29. 2.523 km S of Adak, Alaska · 1189 days ago · 71 km deep · 23 km away
  30. 1.8108 km SW of Adak, Alaska · 1189 days ago · 26 km deep · 75 km away
  31. 3.353 km S of Adak, Alaska · 1188 days ago · 35 km deep · 25 km away
  32. 1.965 km SW of Adak, Alaska · 1188 days ago · 62 km deep · 37 km away
  33. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1188 days ago · 43 km deep · 39 km away
  34. 3.261 km SSW of Adak, Alaska · 1188 days ago · 35 km deep · 27 km away
  35. 3.712 km ENE of Adak, Alaska · 1188 days ago · 116 km deep · 46 km away · felt by 1
  36. 2.1118 km WSW of Adak, Alaska · 1188 days ago · 16 km deep · 92 km away
  37. 1.9102 km SW of Adak, Alaska · 1187 days ago · 32 km deep · 71 km away
  38. 1.977 km SE of Adak, Alaska · 1187 days ago · 13 km deep · 82 km away
  39. 1.643 km SSE of Adak, Alaska · 1187 days ago · 27 km deep · 37 km away
  40. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1187 days ago · 35 km deep · 58 km away
  41. 2.0115 km SW of Adak, Alaska · 1187 days ago · 25 km deep · 82 km away
  42. 1.856 km SSE of Adak, Alaska · 1186 days ago · 24 km deep · 45 km away
  43. 1.545 km SSW of Adak, Alaska · 1186 days ago · 42 km deep · 15 km away
  44. 1.561 km S of Adak, Alaska · 1186 days ago · 13 km deep · 41 km away
  45. 2.973 km W of Adak, Alaska · 1186 days ago · 106 km deep · 60 km away
  46. 2.757 km SSW of Adak, Alaska · 1186 days ago · 35 km deep · 23 km away
  47. 2.252 km ENE of Adak, Alaska · 1186 days ago · 161 km deep · 82 km away
  48. 2.582 km SW of Adak, Alaska · 1186 days ago · 35 km deep · 53 km away
  49. 1.951 km SW of Adak, Alaska · 1185 days ago · 56 km deep · 19 km away
  50. 2.6100 km SSE of Adak, Alaska · 1185 days ago · 10 km deep · 84 km away
  51. 1.736 km SSE of Adak, Alaska · 1185 days ago · 57 km deep · 29 km away
  52. 2.199 km WSW of Adak, Alaska · 1185 days ago · 31 km deep · 71 km away
  53. 2.036 km ESE of Adak, Alaska · 1184 days ago · 75 km deep · 59 km away
  54. 2.288 km SW of Adak, Alaska · 1183 days ago · 26 km deep · 54 km away
  55. 3.535 km E of Adak, Alaska · 1183 days ago · 72 km deep · 59 km away
  56. 1.949 km S of Adak, Alaska · 1183 days ago · 24 km deep · 31 km away
  57. 1.698 km SW of Adak, Alaska · 1183 days ago · 26 km deep · 66 km away
  58. 1.658 km SE of Adak, Alaska · 1183 days ago · 24 km deep · 54 km away
  59. 1.770 km SSW of Adak, Alaska · 1182 days ago · 46 km deep · 37 km away
  60. 1.9100 km W of Adak, Alaska · 1182 days ago · 94 km deep · 85 km away

The first 60 of at least 199.

Before

  1. 1.6117 km WSW of Adak, Alaska · 1193 days ago · 26 km deep · 89 km away
  2. 1.760 km SE of Adak, Alaska · 1193 days ago · 24 km deep · 57 km away
  3. 1.881 km SW of Adak, Alaska · 1193 days ago · 40 km deep · 52 km away
  4. 3.663 km SE of Adak, Alaska · 1193 days ago · 35 km deep · 60 km away
  5. 1.665 km WSW of Adak, Alaska · 1193 days ago · 13 km deep · 39 km away
  6. 1.634 km SSW of Adak, Alaska · 1193 days ago · 40 km deep · 6 km away
  7. 2.039 km W of Adak, Alaska · 1194 days ago · 84 km deep · 38 km away
  8. 2.042 km SSE of Adak, Alaska · 1194 days ago · 35 km deep · 37 km away
  9. 1.8103 km W of Adak, Alaska · 1194 days ago · 5 km deep · 90 km away
  10. 1.994 km W of Adak, Alaska · 1194 days ago · 2 km deep · 81 km away
  11. 2.248 km NNE of Adak, Alaska · 1194 days ago · 139 km deep · 83 km away
  12. 1.9115 km WSW of Adak, Alaska · 1195 days ago · 26 km deep · 89 km away
  13. 1.998 km W of Adak, Alaska · 1195 days ago · 3 km deep · 86 km away
  14. 1.973 km S of Adak, Alaska · 1195 days ago · 25 km deep · 48 km away
  15. 3.557 km ESE of Adak, Alaska · 1195 days ago · 61 km deep · 69 km away
  16. 2.654 km SW of Adak, Alaska · 1195 days ago · 35 km deep · 20 km away
  17. 1.757 km S of Adak, Alaska · 1195 days ago · 23 km deep · 29 km away
  18. 1.997 km W of Adak, Alaska · 1195 days ago · 2 km deep · 84 km away
  19. 2.097 km W of Adak, Alaska · 1195 days ago · 4 km deep · 84 km away
  20. 1.860 km SSW of Adak, Alaska · 1195 days ago · 39 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kb3f (also filed as ak02384ui033). Read Thu, Oct 1, 2026, 1:08 AM UTC.