Alaska earthquakes

M2.1 earthquake 128 km W of Adak, Alaska

A magnitude 2.1 earthquake struck 128 km W of Adak, Alaska on Mon, Feb 19, 2018, 2:36 PM HAST (00:36 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M4.6 111 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
2.1 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-02-20 00:36:58 UTC
Depth
17.6 km (10.9 mi), shallow
Epicenter
51.714° N, 178.472° 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.

Stations used
14

Nearby

Within 100 km, magnitude 1.5 and up: 130 in the 60 days after this one and 87 in the 30 days before it.

After

  1. 1.988 km WSW of Adak, Alaska · 3146 days ago · 13 km deep · 55 km away
  2. 2.4110 km SW of Adak, Alaska · 3145 days ago · 52 km deep · 62 km away
  3. 2.1122 km WSW of Adak, Alaska · 3144 days ago · 38 km deep · 53 km away
  4. 2.2120 km WSW of Adak, Alaska · 3142 days ago · 13 km deep · 43 km away
  5. 3.7111 km SW of Adak, Alaska · 3142 days ago · 40 km deep · 61 km away
  6. 2.2122 km W of Adak, Alaska · 3142 days ago · 12 km deep · 6 km away
  7. 2.5128 km WSW of Adak, Alaska · 3142 days ago · 21 km deep · 21 km away
  8. 2.674 km WSW of Adak, Alaska · 3141 days ago · 45 km deep · 65 km away
  9. 2.7102 km SW of Adak, Alaska · 3141 days ago · 26 km deep · 70 km away
  10. 2.894 km W of Adak, Alaska · 3140 days ago · 112 km deep · 40 km away
  11. 2.239 km WSW of Adak, Alaska · 3140 days ago · 79 km deep · 88 km away
  12. 2.261 km W of Adak, Alaska · 3140 days ago · 84 km deep · 72 km away
  13. 1.9133 km WSW of Adak, Alaska · 3140 days ago · 21 km deep · 49 km away
  14. 1.661 km W of Adak, Alaska · 3140 days ago · 9 km deep · 67 km away
  15. 2.1119 km SW of Adak, Alaska · 3140 days ago · 3 km deep · 57 km away
  16. 2.8200 km W of Adak, Alaska · 3139 days ago · 123 km deep · 74 km away
  17. 2.7151 km WSW of Adak, Alaska · 3139 days ago · 35 km deep · 57 km away
  18. 2.4187 km W of Adak, Alaska · 3138 days ago · 41 km deep · 65 km away
  19. 3.7131 km WSW of Adak, Alaska · 3138 days ago · 16 km deep · 30 km away
  20. 1.8126 km WSW of Adak, Alaska · 3136 days ago · 13 km deep · 8 km away
  21. 1.9128 km W of Adak, Alaska · 3136 days ago · 16 km deep · 2 km away
  22. 1.8127 km W of Adak, Alaska · 3136 days ago · 22 km deep · 9 km away
  23. 2.9168 km WSW of Adak, Alaska · 3136 days ago · 40 km deep · 72 km away
  24. 2.083 km WSW of Adak, Alaska · 3135 days ago · 44 km deep · 48 km away
  25. 3.0117 km WSW of Adak, Alaska · 3135 days ago · 19 km deep · 22 km away
  26. 2.1136 km WSW of Adak, Alaska · 3134 days ago · 26 km deep · 42 km away
  27. 2.7127 km WSW of Adak, Alaska · 3134 days ago · 16 km deep · 22 km away
  28. 2.3123 km WSW of Adak, Alaska · 3134 days ago · 9 km deep · 8 km away
  29. 2.1156 km WSW of Adak, Alaska · 3134 days ago · 53 km deep · 50 km away
  30. 2.1131 km W of Adak, Alaska · 3134 days ago · 13 km deep · 5 km away
  31. 1.7122 km WSW of Adak, Alaska · 3133 days ago · 13 km deep · 11 km away
  32. 1.9129 km WSW of Adak, Alaska · 3132 days ago · 43 km deep · 28 km away
  33. 4.3148 km WSW of Adak, Alaska · 3131 days ago · 35 km deep · 59 km away
  34. 2.4136 km WSW of Adak, Alaska · 3131 days ago · 6 km deep · 28 km away
  35. 2.0127 km W of Adak, Alaska · 3131 days ago · 1 km deep · 2 km away
  36. 2.6128 km WSW of Adak, Alaska · 3131 days ago · 21 km deep · 13 km away
  37. 2.4131 km WSW of Adak, Alaska · 3131 days ago · 16 km deep · 35 km away
  38. 2.1209 km WSW of Adak, Alaska · 3131 days ago · 16 km deep · 83 km away
  39. 4.6111 km SW of Adak, Alaska · 3130 days ago · 48 km deep · 74 km away
  40. 2.4130 km W of Adak, Alaska · 3130 days ago · 15 km deep · 5 km away
  41. 3.3142 km WSW of Adak, Alaska · 3129 days ago · 35 km deep · 47 km away
  42. 2.8108 km SW of Adak, Alaska · 3128 days ago · 53 km deep · 59 km away
  43. 2.2128 km WSW of Adak, Alaska · 3128 days ago · 37 km deep · 43 km away
  44. 1.9113 km WSW of Adak, Alaska · 3128 days ago · 13 km deep · 35 km away
  45. 2.3199 km W of Adak, Alaska · 3126 days ago · 66 km deep · 71 km away
  46. 1.6130 km W of Adak, Alaska · 3126 days ago · 5 km deep · 3 km away
  47. 2.1127 km WSW of Adak, Alaska · 3125 days ago · 12 km deep · 7 km away
  48. 2.2210 km WSW of Adak, Alaska · 3125 days ago · 7 km deep · 97 km away
  49. 1.749 km SW of Adak, Alaska · 3125 days ago · 45 km deep · 100 km away
  50. 1.9122 km WSW of Adak, Alaska · 3125 days ago · 54 km deep · 12 km away
  51. 2.7195 km WSW of Adak, Alaska · 3125 days ago · 22 km deep · 86 km away
  52. 2.7116 km SW of Adak, Alaska · 3125 days ago · 38 km deep · 80 km away
  53. 1.5126 km WSW of Adak, Alaska · 3124 days ago · 22 km deep · 7 km away
  54. 2.0127 km W of Adak, Alaska · 3124 days ago · 14 km deep · 4 km away
  55. 1.873 km WSW of Adak, Alaska · 3124 days ago · 43 km deep · 60 km away
  56. 1.8125 km W of Adak, Alaska · 3124 days ago · 15 km deep · 3 km away
  57. 1.7129 km WSW of Adak, Alaska · 3124 days ago · 11 km deep · 15 km away
  58. 1.9124 km W of Adak, Alaska · 3123 days ago · 18 km deep · 6 km away
  59. 2.2110 km WSW of Adak, Alaska · 3123 days ago · 48 km deep · 48 km away
  60. 1.8105 km WSW of Adak, Alaska · 3123 days ago · 54 km deep · 28 km away

The first 60 of 130.

Before

  1. 1.8112 km SW of Adak, Alaska · 3148 days ago · 33 km deep · 65 km away
  2. 2.0125 km W of Adak, Alaska · 3149 days ago · 16 km deep · 3 km away
  3. 2.5124 km SW of Adak, Alaska · 3149 days ago · 31 km deep · 77 km away
  4. 1.8124 km W of Adak, Alaska · 3150 days ago · 7 km deep · 4 km away
  5. 2.8118 km SW of Adak, Alaska · 3150 days ago · 35 km deep · 69 km away
  6. 2.0110 km WSW of Adak, Alaska · 3150 days ago · 13 km deep · 32 km away
  7. 2.472 km W of Adak, Alaska · 3151 days ago · 73 km deep · 55 km away
  8. 2.6129 km WSW of Adak, Alaska · 3152 days ago · 35 km deep · 46 km away
  9. 2.285 km SW of Adak, Alaska · 3153 days ago · 35 km deep · 63 km away
  10. 3.2187 km WSW of Adak, Alaska · 3153 days ago · 18 km deep · 71 km away
  11. 2.3126 km WSW of Adak, Alaska · 3154 days ago · 31 km deep · 33 km away
  12. 1.9128 km W of Adak, Alaska · 3155 days ago · 13 km deep · 5 km away
  13. 1.8129 km WSW of Adak, Alaska · 3155 days ago · 14 km deep · 8 km away
  14. 1.8171 km WSW of Adak, Alaska · 3155 days ago · 7 km deep · 48 km away
  15. 1.9124 km W of Adak, Alaska · 3155 days ago · 16 km deep · 4 km away
  16. 1.671 km WSW of Adak, Alaska · 3156 days ago · 14 km deep · 70 km away
  17. 2.1134 km W of Adak, Alaska · 3156 days ago · 8 km deep · 7 km away
  18. 3.0175 km W of Adak, Alaska · 3156 days ago · 236 km deep · 60 km away
  19. 2.271 km WSW of Adak, Alaska · 3157 days ago · 80 km deep · 57 km away
  20. 2.0112 km WSW of Adak, Alaska · 3157 days ago · 15 km deep · 28 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0182ccmjgo (also filed as ak18462378). Read Fri, Oct 2, 2026, 9:56 AM UTC.