Alaska earthquakes

M1.8 earthquake 79 km W of Adak, Alaska

A magnitude 1.8 earthquake struck 79 km W of Adak, Alaska on Tue, Mar 3, 2020, 11:47 PM HAST (09:47 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M5.0 71 km WNW 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), micro
Local time
UTC
2020-03-04 09:47:09 UTC
Depth
0.9 km (0.6 mi), shallow
Epicenter
51.858° N, 177.788° 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 0.5 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
155°
Stations used
9

Nearby

Within 100 km, magnitude 1.5 and up: 180 in the 60 days after this one and 173 in the 30 days before it.

After

  1. 1.981 km W of Adak, Alaska · 2400 days ago · 11 km deep · 6 km away
  2. 2.079 km W of Adak, Alaska · 2400 days ago · 5 km deep · 1 km away
  3. 1.7Andreanof Islands, Aleutian Islands, Alaska · 2400 days ago · 3 km deep · 0 km away
  4. 1.686 km WSW of Adak, Alaska · 2398 days ago · 10 km deep · 36 km away
  5. 1.677 km W of Adak, Alaska · 2398 days ago · 11 km deep · 6 km away
  6. 1.561 km SW of Adak, Alaska · 2398 days ago · 18 km deep · 48 km away
  7. 1.785 km SW of Adak, Alaska · 2398 days ago · 26 km deep · 46 km away
  8. 1.956 km SW of Adak, Alaska · 2398 days ago · 49 km deep · 65 km away
  9. 3.460 km SSW of Adak, Alaska · 2397 days ago · 39 km deep · 71 km away
  10. 2.8Andreanof Islands, Aleutian Islands, Alaska · 2397 days ago · 33 km deep · 86 km away
  11. 1.656 km SSW of Adak, Alaska · 2397 days ago · 30 km deep · 69 km away
  12. 1.674 km WSW of Adak, Alaska · 2397 days ago · 18 km deep · 42 km away
  13. 1.9127 km WSW of Adak, Alaska · 2396 days ago · 9 km deep · 51 km away
  14. 2.2158 km WSW of Adak, Alaska · 2396 days ago · 13 km deep · 87 km away
  15. 1.678 km W of Adak, Alaska · 2395 days ago · 6 km deep · 3 km away
  16. 2.350 km W of Adak, Alaska · 2395 days ago · 94 km deep · 29 km away
  17. 2.944 km S of Adak, Alaska · 2395 days ago · 35 km deep · 93 km away
  18. 1.945 km S of Adak, Alaska · 2395 days ago · 38 km deep · 84 km away
  19. 2.965 km SSW of Adak, Alaska · 2395 days ago · 36 km deep · 80 km away
  20. 1.763 km SSW of Adak, Alaska · 2395 days ago · 43 km deep · 79 km away
  21. 3.127 km SSW of Adak, Alaska · 2394 days ago · 60 km deep · 77 km away
  22. 1.789 km SW of Adak, Alaska · 2394 days ago · 22 km deep · 48 km away
  23. 1.759 km SSW of Adak, Alaska · 2394 days ago · 32 km deep · 88 km away
  24. 1.9128 km WSW of Adak, Alaska · 2394 days ago · 36 km deep · 71 km away
  25. 2.9136 km W of Adak, Alaska · 2394 days ago · 175 km deep · 62 km away
  26. 1.578 km W of Adak, Alaska · 2394 days ago · 6 km deep · 1 km away
  27. 1.743 km SSW of Adak, Alaska · 2393 days ago · 30 km deep · 76 km away
  28. 1.678 km W of Adak, Alaska · 2393 days ago · 4 km deep · 1 km away
  29. 2.178 km W of Adak, Alaska · 2393 days ago · 3 km deep · 1 km away
  30. 1.778 km W of Adak, Alaska · 2393 days ago · 4 km deep · 1 km away
  31. 1.8Andreanof Islands, Aleutian Islands, Alaska · 2393 days ago · 9 km deep · 2 km away
  32. 2.775 km SW of Adak, Alaska · 2393 days ago · 48 km deep · 47 km away
  33. 1.6Andreanof Islands, Aleutian Islands, Alaska · 2392 days ago · 8 km deep · 3 km away
  34. 2.0Andreanof Islands, Aleutian Islands, Alaska · 2392 days ago · 83 km deep · 65 km away
  35. 1.779 km W of Adak, Alaska · 2392 days ago · 5 km deep · 4 km away
  36. 2.764 km S of Adak, Alaska · 2392 days ago · 31 km deep · 93 km away
  37. 1.680 km W of Adak, Alaska · 2391 days ago · 5 km deep · 2 km away
  38. 1.765 km WSW of Adak, Alaska · 2391 days ago · 60 km deep · 32 km away
  39. 2.3127 km WSW of Adak, Alaska · 2390 days ago · 24 km deep · 68 km away
  40. 1.920 km ESE of Adak, Alaska · 2390 days ago · 70 km deep · 98 km away
  41. 3.0115 km WSW of Adak, Alaska · 2389 days ago · 28 km deep · 57 km away
  42. 2.823 km SSW of Adak, Alaska · 2389 days ago · 72 km deep · 73 km away
  43. 2.0125 km WSW of Adak, Alaska · 2389 days ago · 8 km deep · 52 km away
  44. 1.937 km WSW of Adak, Alaska · 2388 days ago · 12 km deep · 50 km away
  45. 1.6123 km WSW of Adak, Alaska · 2388 days ago · 26 km deep · 65 km away
  46. 1.662 km W of Adak, Alaska · 2388 days ago · 7 km deep · 19 km away
  47. 3.3123 km WSW of Adak, Alaska · 2387 days ago · 28 km deep · 64 km away
  48. 2.257 km SW of Adak, Alaska · 2386 days ago · 52 km deep · 56 km away
  49. 2.718 km SSE of Adak, Alaska · 2385 days ago · 69 km deep · 88 km away
  50. 1.841 km SSW of Adak, Alaska · 2385 days ago · 36 km deep · 77 km away
  51. 3.017 km NNW of Adak, Alaska · 2385 days ago · 215 km deep · 76 km away
  52. 1.7162 km W of Adak, Alaska · 2385 days ago · 8 km deep · 83 km away
  53. 1.9135 km WSW of Adak, Alaska · 2385 days ago · 7 km deep · 58 km away
  54. 2.0144 km WSW of Adak, Alaska · 2385 days ago · 24 km deep · 83 km away
  55. 2.5135 km W of Adak, Alaska · 2385 days ago · 211 km deep · 57 km away
  56. 1.5128 km WSW of Adak, Alaska · 2384 days ago · 13 km deep · 52 km away
  57. 2.791 km SW of Adak, Alaska · 2383 days ago · 62 km deep · 53 km away
  58. 3.162 km S of Adak, Alaska · 2383 days ago · 35 km deep · 91 km away
  59. 5.071 km WNW of Adak, Alaska · 2382 days ago · 101 km deep · 28 km away
  60. 2.366 km W of Adak, Alaska · 2382 days ago · 93 km deep · 14 km away

The first 60 of 180.

Before

  1. 1.8119 km SW of Adak, Alaska · 2401 days ago · 18 km deep · 74 km away
  2. 1.8109 km SW of Adak, Alaska · 2401 days ago · 28 km deep · 73 km away
  3. 2.1133 km WSW of Adak, Alaska · 2401 days ago · 7 km deep · 56 km away
  4. 1.8129 km SW of Adak, Alaska · 2401 days ago · 20 km deep · 79 km away
  5. 2.2125 km SW of Adak, Alaska · 2401 days ago · 26 km deep · 74 km away
  6. 2.6132 km SW of Adak, Alaska · 2401 days ago · 32 km deep · 84 km away
  7. 1.980 km W of Adak, Alaska · 2401 days ago · 10 km deep · 3 km away
  8. 1.777 km W of Adak, Alaska · 2401 days ago · 11 km deep · 4 km away
  9. 1.565 km SSW of Adak, Alaska · 2401 days ago · 26 km deep · 82 km away
  10. 1.9129 km WSW of Adak, Alaska · 2401 days ago · 71 km deep · 57 km away
  11. 3.466 km SSW of Adak, Alaska · 2401 days ago · 35 km deep · 69 km away
  12. 1.782 km W of Adak, Alaska · 2401 days ago · 7 km deep · 4 km away
  13. 1.787 km W of Adak, Alaska · 2402 days ago · 5 km deep · 8 km away
  14. 2.1129 km WSW of Adak, Alaska · 2402 days ago · 66 km deep · 57 km away
  15. 1.887 km W of Adak, Alaska · 2403 days ago · 3 km deep · 8 km away
  16. 4.031 km SSE of Adak, Alaska · 2403 days ago · 48 km deep · 98 km away
  17. 4.051 km WSW of Adak, Alaska · 2403 days ago · 75 km deep · 41 km away
  18. 1.788 km W of Adak, Alaska · 2405 days ago · 4 km deep · 9 km away
  19. 1.680 km W of Adak, Alaska · 2405 days ago · 7 km deep · 1 km away
  20. 1.638 km SSW of Adak, Alaska · 2406 days ago · 13 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av62143021. Read Wed, Sep 30, 2026, 6:12 AM UTC.