Alaska earthquakes

M4.0 earthquake 93 km SE of Adak, Alaska

A magnitude 4.0 earthquake struck 93 km SE of Adak, Alaska on Thu, Dec 5, 2019, 6:15 AM HAST (16:15 UTC), 45 km (28 mi) below the surface.

A larger quake followed: M4.7 87 km SW of Atka, 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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-12-05 16:15:47 UTC
Depth
44.9 km (27.9 mi), shallow
Epicenter
51.340° N, 175.585° 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
4.0mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.07 · 55 stations
3.9ML, 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 4.7 km horizontally, 8.8 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
143°
Stations used
98

Nearby

Within 100 km, magnitude 1.5 and up: 145 in the 60 days after this one and 169 in the 30 days before it.

After

  1. 1.987 km S of Adak, Alaska · 2491 days ago · 15 km deep · 74 km away
  2. 1.992 km ESE of Adak, Alaska · 2491 days ago · 26 km deep · 11 km away
  3. 1.968 km ESE of Adak, Alaska · 2490 days ago · 60 km deep · 45 km away
  4. 2.191 km S of Atka, Alaska · 2490 days ago · 13 km deep · 86 km away
  5. 2.779 km SW of Atka, Alaska · 2490 days ago · 27 km deep · 57 km away
  6. 2.087 km SE of Adak, Alaska · 2490 days ago · 25 km deep · 10 km away
  7. 1.862 km S of Adak, Alaska · 2489 days ago · 26 km deep · 65 km away
  8. 1.959 km SE of Adak, Alaska · 2489 days ago · 43 km deep · 34 km away
  9. 2.257 km SSE of Adak, Alaska · 2489 days ago · 26 km deep · 54 km away
  10. 2.423 km SE of Adak, Alaska · 2488 days ago · 63 km deep · 71 km away
  11. 2.892 km SE of Adak, Alaska · 2488 days ago · 29 km deep · 5 km away
  12. 1.996 km ESE of Adak, Alaska · 2487 days ago · 26 km deep · 39 km away
  13. 1.843 km S of Adak, Alaska · 2487 days ago · 38 km deep · 77 km away
  14. 3.593 km S of Atka, Alaska · 2486 days ago · 35 km deep · 94 km away
  15. 1.854 km SSE of Adak, Alaska · 2486 days ago · 24 km deep · 61 km away
  16. 1.727 km SE of Adak, Alaska · 2486 days ago · 59 km deep · 67 km away
  17. 2.277 km S of Atka, Alaska · 2485 days ago · 18 km deep · 87 km away
  18. 1.864 km SSW of Atka, Alaska · 2485 days ago · 41 km deep · 80 km away
  19. 2.470 km SE of Adak, AK · 2485 days ago · 28 km deep · 28 km away
  20. 2.281 km SE of Adak, Alaska · 2485 days ago · 19 km deep · 12 km away
  21. 2.090 km ESE of Adak, Alaska · 2485 days ago · 35 km deep · 12 km away
  22. 2.589 km ESE of Adak, Alaska · 2485 days ago · 35 km deep · 17 km away
  23. 2.0126 km SSW of Atka, Alaska · 2485 days ago · 23 km deep · 39 km away
  24. 2.5126 km SSW of Atka, AK · 2485 days ago · 13 km deep · 40 km away
  25. 2.287 km SE of Adak, Alaska · 2484 days ago · 25 km deep · 8 km away
  26. 1.68 km ESE of Adak, Alaska · 2484 days ago · 71 km deep · 85 km away
  27. 1.683 km SW of Atka, Alaska · 2484 days ago · 47 km deep · 52 km away
  28. 1.550 km ESE of Adak, Alaska · 2484 days ago · 68 km deep · 51 km away
  29. 1.891 km ESE of Adak, Alaska · 2484 days ago · 29 km deep · 18 km away
  30. 1.769 km SW of Atka, Alaska · 2483 days ago · 21 km deep · 65 km away
  31. 2.086 km E of Adak, Alaska · 2483 days ago · 59 km deep · 48 km away
  32. 1.662 km ESE of Adak, Alaska · 2483 days ago · 44 km deep · 33 km away
  33. 2.185 km WSW of Atka, Alaska · 2482 days ago · 69 km deep · 66 km away
  34. 2.260 km SSE of Adak, Alaska · 2482 days ago · 23 km deep · 41 km away
  35. 2.530 km ESE of Adak, Alaska · 2482 days ago · 75 km deep · 64 km away
  36. 2.3123 km SSW of Atka, Alaska · 2482 days ago · 13 km deep · 49 km away
  37. 2.071 km SW of Atka, AK · 2481 days ago · 42 km deep · 64 km away
  38. 1.958 km SE of Adak, Alaska · 2481 days ago · 33 km deep · 35 km away
  39. 2.880 km ESE of Adak, Alaska · 2481 days ago · 53 km deep · 32 km away
  40. 2.273 km W of Atka, Alaska · 2481 days ago · 135 km deep · 92 km away
  41. 2.371 km SE of Adak, Alaska · 2480 days ago · 27 km deep · 26 km away
  42. 2.673 km ENE of Adak, Alaska · 2480 days ago · 155 km deep · 95 km away
  43. 1.889 km SW of Atka, Alaska · 2480 days ago · 26 km deep · 46 km away
  44. 1.768 km S of Adak, Alaska · 2480 days ago · 24 km deep · 86 km away
  45. 1.889 km SW of Atka, Alaska · 2478 days ago · 37 km deep · 49 km away
  46. 1.843 km ENE of Adak, Alaska · 2478 days ago · 6 km deep · 84 km away
  47. 2.456 km SSW of Atka, Alaska · 2477 days ago · 24 km deep · 81 km away
  48. 2.066 km SE of Adak, Alaska · 2477 days ago · 26 km deep · 34 km away
  49. 2.744 km SSW of Adak, Alaska · 2476 days ago · 35 km deep · 95 km away
  50. 2.252 km SSE of Adak, Alaska · 2476 days ago · 26 km deep · 48 km away
  51. 2.6106 km ESE of Adak, Alaska · 2475 days ago · 28 km deep · 19 km away
  52. 4.075 km ESE of Adak, AK · 2474 days ago · 35 km deep · 27 km away
  53. 2.165 km SE of Adak, Alaska · 2473 days ago · 22 km deep · 35 km away
  54. 4.260 km S of Adak, Alaska · 2472 days ago · 35 km deep · 73 km away
  55. 3.754 km S of Adak, Alaska · 2472 days ago · 35 km deep · 72 km away
  56. 2.250 km S of Adak, Alaska · 2472 days ago · 36 km deep · 73 km away
  57. 2.344 km ESE of Adak, Alaska · 2471 days ago · 64 km deep · 56 km away
  58. 2.666 km SSE of Adak, Alaska · 2471 days ago · 35 km deep · 48 km away
  59. 2.071 km ESE of Adak, Alaska · 2470 days ago · 19 km deep · 26 km away
  60. 2.2Andreanof Islands, Aleutian Islands, Alaska · 2467 days ago · 54 km deep · 54 km away

The first 60 of 145.

Before

  1. 2.487 km SE of Adak, Alaska · 2492 days ago · 20 km deep · 7 km away
  2. 1.578 km SE of Adak, Alaska · 2492 days ago · 13 km deep · 16 km away
  3. 2.476 km SW of Atka, Alaska · 2492 days ago · 21 km deep · 59 km away
  4. 2.166 km SE of Adak, Alaska · 2492 days ago · 24 km deep · 27 km away
  5. 2.588 km SSE of Adak, Alaska · 2493 days ago · 10 km deep · 47 km away
  6. 2.086 km SE of Adak, Alaska · 2493 days ago · 47 km deep · 12 km away
  7. 2.252 km WSW of Atka, Alaska · 2494 days ago · 64 km deep · 86 km away
  8. 3.251 km SSW of Atka, Alaska · 2494 days ago · 60 km deep · 93 km away
  9. 1.637 km NE of Adak, Alaska · 2495 days ago · 3 km deep · 99 km away
  10. 2.049 km SE of Adak, Alaska · 2495 days ago · 37 km deep · 44 km away
  11. 2.338 km SW of Atka, Alaska · 2496 days ago · 76 km deep · 97 km away
  12. 2.166 km SW of Atka, Alaska · 2496 days ago · 38 km deep · 69 km away
  13. 1.780 km SW of Atka, Alaska · 2496 days ago · 26 km deep · 55 km away
  14. 1.667 km SE of Adak, Alaska · 2497 days ago · 11 km deep · 33 km away
  15. 1.668 km ENE of Adak, Alaska · 2497 days ago · 20 km deep · 79 km away
  16. 1.991 km SE of Adak, Alaska · 2497 days ago · 26 km deep · 10 km away
  17. 2.883 km SSW of Atka, Alaska · 2498 days ago · 35 km deep · 55 km away
  18. 2.440 km SSE of Adak, Alaska · 2499 days ago · 35 km deep · 60 km away
  19. 1.684 km SE of Adak, Alaska · 2499 days ago · 26 km deep · 9 km away
  20. 1.574 km E of Adak, Alaska · 2499 days ago · 29 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60006pu7 (also filed as ak019fkwswdr). Read Thu, Oct 1, 2026, 8:47 AM UTC.