Alaska earthquakes

M1.8 earthquake 163 km WSW of Adak, Alaska

A magnitude 1.8 earthquake struck 163 km WSW of Adak, Alaska on Sat, May 23, 2026, 12:18 AM HADT (09:18 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M5.0 212 km WSW 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
1.8 (ML, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2026-05-23 09:18:39 UTC
Depth
11.0 km (6.8 mi), shallow
Epicenter
51.489° N, 178.922° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

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 0.7 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.38
Depth from
From location
Station coverage gap
229°, poorly surrounded by stations
Stations used
12

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 64 in the 30 days before it.

After

  1. 2.5152 km SW of Adak, Alaska · 131 days ago · 23 km deep · 52 km away
  2. 2.6139 km SW of Adak, Alaska · 131 days ago · 16 km deep · 65 km away
  3. 2.1124 km WSW of Adak, Alaska · 130 days ago · 30 km deep · 58 km away
  4. 3.6147 km WSW of Adak, Alaska · 130 days ago · 29 km deep · 44 km away
  5. 2.8154 km WSW of Adak, Alaska · 130 days ago · 29 km deep · 43 km away
  6. 2.7210 km WSW of Adak, Alaska · 130 days ago · 40 km deep · 46 km away
  7. 3.4109 km WSW of Adak, Alaska · 128 days ago · 59 km deep · 61 km away
  8. 1.6153 km W of Adak, Alaska · 128 days ago · 10 km deep · 35 km away
  9. 3.0162 km WSW of Adak, Alaska · 127 days ago · 83 km deep · 8 km away
  10. 2.6122 km WSW of Adak, Alaska · 127 days ago · 10 km deep · 56 km away
  11. 2.5154 km WSW of Adak, Alaska · 126 days ago · 35 km deep · 43 km away
  12. 3.0210 km WSW of Adak, Alaska · 126 days ago · 48 km deep · 48 km away
  13. 3.3203 km WSW of Adak, Alaska · 126 days ago · 72 km deep · 40 km away
  14. 2.6140 km WSW of Adak, Alaska · 126 days ago · 6 km deep · 32 km away
  15. 4.1135 km WSW of Adak, Alaska · 125 days ago · 38 km deep · 51 km away
  16. 2.4128 km WSW of Adak, Alaska · 125 days ago · 18 km deep · 50 km away
  17. 3.6101 km SW of Adak, Alaska · 124 days ago · 35 km deep · 76 km away
  18. 2.1104 km SW of Adak, Alaska · 124 days ago · 39 km deep · 79 km away
  19. 2.3124 km SW of Adak, Alaska · 123 days ago · 13 km deep · 63 km away
  20. 3.0201 km WSW of Adak, Alaska · 123 days ago · 28 km deep · 38 km away
  21. 2.1121 km WSW of Adak, Alaska · 123 days ago · 6 km deep · 49 km away
  22. 2.6221 km WSW of Adak, Alaska · 122 days ago · 11 km deep · 64 km away
  23. 2.5246 km WSW of Adak, Alaska · 122 days ago · 13 km deep · 82 km away
  24. 2.8123 km WSW of Adak, Alaska · 122 days ago · 35 km deep · 61 km away
  25. 1.5105 km WSW of Adak, Alaska · 121 days ago · 15 km deep · 61 km away
  26. 2.1141 km WSW of Adak, Alaska · 121 days ago · 29 km deep · 36 km away
  27. 3.177 km SW of Adak, Alaska · 121 days ago · 28 km deep · 98 km away
  28. 2.6240 km WSW of Adak, Alaska · 121 days ago · 11 km deep · 85 km away
  29. 2.3119 km WSW of Adak, Alaska · 121 days ago · 6 km deep · 61 km away
  30. 2.084 km SW of Adak, Alaska · 120 days ago · 33 km deep · 95 km away
  31. 2.6207 km WSW of Adak, Alaska · 120 days ago · 51 km deep · 47 km away
  32. 2.8238 km WSW of Adak, Alaska · 119 days ago · 63 km deep · 75 km away
  33. 2.5190 km SW of Adak, Alaska · 119 days ago · 13 km deep · 79 km away
  34. 2.077 km SW of Adak, Alaska · 119 days ago · 24 km deep · 97 km away
  35. 2.489 km SW of Adak, Alaska · 119 days ago · 25 km deep · 94 km away
  36. 2.6247 km W of Adak, Alaska · 118 days ago · 76 km deep · 86 km away
  37. 2.2100 km SW of Adak, Alaska · 117 days ago · 37 km deep · 96 km away
  38. 4.2239 km WSW of Adak, Alaska · 117 days ago · 51 km deep · 76 km away
  39. 2.4142 km WSW of Adak, Alaska · 115 days ago · 28 km deep · 44 km away
  40. 3.5143 km WSW of Adak, Alaska · 115 days ago · 35 km deep · 38 km away
  41. 2.294 km SW of Adak, Alaska · 115 days ago · 17 km deep · 89 km away
  42. 3.093 km SW of Adak, Alaska · 115 days ago · 34 km deep · 94 km away
  43. 2.5199 km WSW of Adak, Alaska · 115 days ago · 15 km deep · 53 km away
  44. 2.1125 km WSW of Adak, Alaska · 115 days ago · 23 km deep · 59 km away
  45. 2.4187 km WSW of Adak, Alaska · 115 days ago · 21 km deep · 46 km away
  46. 2.9216 km W of Adak, Alaska · 114 days ago · 199 km deep · 84 km away
  47. 2.2215 km W of Adak, Alaska · 114 days ago · 74 km deep · 55 km away
  48. 2.0101 km WSW of Adak, Alaska · 114 days ago · 36 km deep · 70 km away
  49. 3.1257 km WSW of Adak, Alaska · 114 days ago · 35 km deep · 93 km away
  50. 2.282 km SW of Adak, Alaska · 114 days ago · 26 km deep · 95 km away
  51. 2.3159 km WSW of Adak, Alaska · 114 days ago · 2 km deep · 28 km away
  52. 2.1212 km W of Adak, Alaska · 114 days ago · 89 km deep · 60 km away
  53. 2.6255 km WSW of Adak, Alaska · 113 days ago · 14 km deep · 91 km away
  54. 1.978 km W of Adak, Alaska · 113 days ago · 92 km deep · 86 km away
  55. 1.9109 km SW of Adak, Alaska · 113 days ago · 18 km deep · 70 km away
  56. 2.0130 km WSW of Adak, Alaska · 113 days ago · 1 km deep · 37 km away
  57. 1.8115 km SW of Adak, Alaska · 113 days ago · 31 km deep · 80 km away
  58. 2.4180 km WSW of Adak, Alaska · 113 days ago · 66 km deep · 18 km away
  59. 2.2213 km W of Adak, Alaska · 113 days ago · 122 km deep · 65 km away
  60. 2.2124 km SW of Adak, Alaska · 113 days ago · 20 km deep · 79 km away

The first 60 of at least 199.

Before

  1. 2.7161 km WSW of Adak, Alaska · 131 days ago · 35 km deep · 47 km away
  2. 2.4129 km SW of Adak, Alaska · 131 days ago · 7 km deep · 85 km away
  3. 2.489 km SW of Adak, Alaska · 132 days ago · 22 km deep · 88 km away
  4. 2.6149 km WSW of Adak, Alaska · 132 days ago · 34 km deep · 43 km away
  5. 3.180 km WSW of Adak, Alaska · 132 days ago · 82 km deep · 84 km away
  6. 3.5160 km SW of Adak, Alaska · 133 days ago · 10 km deep · 51 km away
  7. 2.9118 km SW of Adak, Alaska · 133 days ago · 29 km deep · 64 km away
  8. 2.3112 km WSW of Adak, Alaska · 134 days ago · 6 km deep · 58 km away
  9. 2.490 km SW of Adak, Alaska · 134 days ago · 23 km deep · 94 km away
  10. 2.9222 km W of Adak, Alaska · 134 days ago · 90 km deep · 68 km away
  11. 3.086 km WSW of Adak, Alaska · 135 days ago · 37 km deep · 81 km away
  12. 3.6114 km WSW of Adak, Alaska · 136 days ago · 35 km deep · 53 km away
  13. 2.582 km WSW of Adak, Alaska · 138 days ago · 38 km deep · 89 km away
  14. 2.686 km SW of Adak, Alaska · 139 days ago · 35 km deep · 88 km away
  15. 2.6147 km SW of Adak, Alaska · 140 days ago · 10 km deep · 63 km away
  16. 3.2166 km SW of Adak, Alaska · 140 days ago · 10 km deep · 63 km away
  17. 2.3101 km W of Adak, Alaska · 140 days ago · 181 km deep · 75 km away
  18. 2.5132 km WSW of Adak, Alaska · 140 days ago · 40 km deep · 52 km away
  19. 2.7146 km WSW of Adak, Alaska · 141 days ago · 35 km deep · 47 km away
  20. 2.992 km SW of Adak, Alaska · 142 days ago · 35 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av94204643. Read Thu, Oct 1, 2026, 6:52 AM UTC.