Washington earthquakes

M4.0 earthquake 23 km SW of White Swan, Washington

A magnitude 4.0 earthquake struck 23 km SW of White Swan, Washington on Sun, Feb 1, 1981, 5:23 PM PST (01:23 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M5.2 23 km S of Morton, Washington. This one was a foreshock.

White Swan forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.0 (md), light
Local time
UTC
1981-02-02 01:23:18 UTC
Depth
1.0 km (0.6 mi), shallow
Epicenter
46.263° N, 120.989° W
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 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
31°
Stations used
60

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 139 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 1.621 km WSW of White Swan, Washington · 16668 days ago · -1 km deep · 3 km away
  2. 1.739 km NNE of Amboy, Washington · 16668 days ago · 0 km deep · 92 km away
  3. 1.838 km S of Morton, Washington · 16668 days ago · -1 km deep · 92 km away
  4. 2.9Washington · 16667 days ago · 0 km deep · 93 km away
  5. 3.138 km NNE of Amboy, Washington · 16666 days ago · 2 km deep · 92 km away
  6. 2.638 km NNE of Amboy, Washington · 16666 days ago · 1 km deep · 92 km away
  7. 1.737 km S of Morton, Washington · 16666 days ago · -1 km deep · 92 km away
  8. 2.738 km NNE of Amboy, Washington · 16666 days ago · 1 km deep · 92 km away
  9. 2.130 km SSE of Morton, Washington · 16665 days ago · 20 km deep · 87 km away
  10. 2.137 km NNE of Amboy, Washington · 16665 days ago · 1 km deep · 95 km away
  11. 2.9Washington · 16665 days ago · 0 km deep · 93 km away
  12. 2.437 km S of Morton, Washington · 16665 days ago · 0 km deep · 93 km away
  13. 2.2Washington · 16665 days ago · -1 km deep · 93 km away
  14. 2.540 km SSE of Morton, Washington · 16665 days ago · -1 km deep · 89 km away
  15. 2.938 km S of Morton, Washington · 16665 days ago · -1 km deep · 92 km away
  16. 2.935 km NNE of Amboy, Washington · 16665 days ago · 0 km deep · 94 km away
  17. 3.0Washington · 16665 days ago · 1 km deep · 93 km away
  18. 2.738 km NNE of Amboy, Washington · 16665 days ago · -1 km deep · 94 km away
  19. 2.9Washington · 16665 days ago · -1 km deep · 90 km away
  20. 2.738 km S of Morton, Washington · 16665 days ago · -1 km deep · 92 km away
  21. 2.337 km S of Morton, Washington · 16665 days ago · -1 km deep · 92 km away
  22. 2.637 km SSE of Morton, Washington · 16665 days ago · 0 km deep · 85 km away
  23. 2.738 km NNE of Amboy, Washington · 16665 days ago · -1 km deep · 93 km away
  24. 2.638 km NNE of Amboy, Washington · 16665 days ago · -1 km deep · 92 km away
  25. 2.637 km NNE of Amboy, Washington · 16665 days ago · -1 km deep · 93 km away
  26. 2.342 km NE of Amboy, Washington · 16665 days ago · 6 km deep · 84 km away
  27. 2.629 km NNE of Amboy, Washington · 16665 days ago · 10 km deep · 100 km away
  28. 2.434 km NNE of Amboy, Washington · 16663 days ago · -1 km deep · 95 km away
  29. 2.526 km S of Morton, Washington · 16659 days ago · 2 km deep · 94 km away
  30. 1.925 km SSE of Morton, Washington · 16659 days ago · 2 km deep · 94 km away
  31. 5.223 km S of Morton, Washington · 16656 days ago · 6 km deep · 96 km away
  32. 3.825 km S of Morton, Washington · 16656 days ago · 8 km deep · 96 km away
  33. 2.225 km S of Morton, Washington · 16656 days ago · 6 km deep · 96 km away
  34. 2.522 km S of Morton, Washington · 16656 days ago · 9 km deep · 97 km away
  35. 2.422 km S of Morton, Washington · 16656 days ago · 6 km deep · 97 km away
  36. 1.823 km S of Morton, Washington · 16656 days ago · 6 km deep · 96 km away
  37. 2.125 km S of Morton, Washington · 16656 days ago · 7 km deep · 96 km away
  38. 2.022 km S of Morton, Washington · 16656 days ago · 7 km deep · 97 km away
  39. 2.023 km S of Morton, Washington · 16656 days ago · 7 km deep · 96 km away
  40. 3.523 km S of Morton, Washington · 16656 days ago · 9 km deep · 97 km away
  41. 3.425 km S of Morton, Washington · 16656 days ago · 11 km deep · 96 km away
  42. 1.723 km S of Morton, Washington · 16656 days ago · 8 km deep · 96 km away
  43. 2.925 km S of Morton, Washington · 16656 days ago · 10 km deep · 96 km away
  44. 1.522 km S of Morton, Washington · 16656 days ago · 8 km deep · 97 km away
  45. 2.421 km S of Morton, Washington · 16656 days ago · 4 km deep · 97 km away
  46. 1.822 km S of Morton, Washington · 16656 days ago · 8 km deep · 97 km away
  47. 1.822 km S of Morton, Washington · 16656 days ago · 7 km deep · 97 km away
  48. 1.922 km S of Morton, Washington · 16656 days ago · 10 km deep · 98 km away
  49. 1.923 km S of Morton, Washington · 16656 days ago · 8 km deep · 96 km away
  50. 3.822 km S of Morton, Washington · 16656 days ago · 10 km deep · 97 km away
  51. 1.822 km S of Morton, Washington · 16656 days ago · 10 km deep · 97 km away
  52. 1.722 km S of Morton, Washington · 16656 days ago · 10 km deep · 97 km away
  53. 1.624 km S of Morton, Washington · 16656 days ago · 10 km deep · 96 km away
  54. 1.922 km S of Morton, Washington · 16656 days ago · 6 km deep · 97 km away
  55. 1.524 km S of Morton, Washington · 16656 days ago · 8 km deep · 96 km away
  56. 2.822 km S of Morton, Washington · 16656 days ago · 8 km deep · 97 km away
  57. 1.622 km S of Morton, Washington · 16656 days ago · 10 km deep · 97 km away
  58. 1.522 km S of Morton, Washington · 16656 days ago · 8 km deep · 97 km away
  59. 2.025 km S of Morton, Washington · 16656 days ago · 10 km deep · 96 km away
  60. 1.724 km S of Morton, Washington · 16656 days ago · 7 km deep · 96 km away

The first 60 of 139.

Before

  1. 2.318 km ENE of Roosevelt, Washington · 16671 days ago · -1 km deep · 89 km away
  2. 1.618 km NNW of Bickleton, Washington · 16685 days ago · 16 km deep · 46 km away
  3. 1.737 km NNE of Amboy, Washington · 16695 days ago · 0 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10096208 (also filed as usp0001c0y). Read Tue, Sep 22, 2026, 4:01 AM UTC.