Washington earthquakes

M4.0 earthquake 35 km S of Morton, Washington

A magnitude 4.0 earthquake struck 35 km S of Morton, Washington on Sat, Apr 12, 1980, 7:03 PM PST (03:03 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M5.7 38 km NNE of Amboy, Washington. This one was a foreshock.

Morton 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
1980-04-13 03:03:22 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
46.245° N, 122.188° 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, 0.3 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
130°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 4.038 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 4 km away
  2. 4.238 km NNE of Amboy, Washington · 16967 days ago · 0 km deep · 5 km away
  3. 3.638 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 4 km away
  4. 4.839 km S of Morton, Washington · 16967 days ago · 1 km deep · 4 km away
  5. 4.0Washington · 16967 days ago · -1 km deep · 3 km away
  6. 2.8Washington · 16967 days ago · -1 km deep · 4 km away
  7. 4.138 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 4 km away
  8. 3.838 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 4 km away
  9. 3.838 km NNE of Amboy, Washington · 16967 days ago · 0 km deep · 4 km away
  10. 4.538 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 5 km away
  11. 4.939 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 4 km away
  12. 3.838 km NNE of Amboy, Washington · 16966 days ago · 0 km deep · 4 km away
  13. 3.939 km S of Morton, Washington · 16966 days ago · 0 km deep · 4 km away
  14. 3.838 km NNE of Amboy, Washington · 16966 days ago · -1 km deep · 4 km away
  15. 4.138 km NNE of Amboy, Washington · 16966 days ago · 0 km deep · 5 km away
  16. 3.838 km NNE of Amboy, Washington · 16966 days ago · 0 km deep · 4 km away
  17. 4.338 km S of Morton, Washington · 16966 days ago · -1 km deep · 3 km away
  18. 4.938 km NNE of Amboy, Washington · 16966 days ago · 1 km deep · 4 km away
  19. 3.638 km S of Morton, Washington · 16966 days ago · -1 km deep · 3 km away
  20. 3.938 km NNE of Amboy, Washington · 16966 days ago · 1 km deep · 5 km away
  21. 3.738 km NNE of Amboy, Washington · 16966 days ago · 0 km deep · 5 km away
  22. 3.938 km NNE of Amboy, Washington · 16966 days ago · -1 km deep · 4 km away
  23. 3.837 km NNE of Amboy, Washington · 16966 days ago · -1 km deep · 5 km away
  24. 4.439 km NNE of Amboy, Washington · 16966 days ago · 0 km deep · 4 km away
  25. 5.237 km NNE of Amboy, Washington · 16966 days ago · 1 km deep · 5 km away
  26. 4.038 km NNE of Amboy, Washington · 16966 days ago · -1 km deep · 4 km away
  27. 4.038 km S of Morton, Washington · 16965 days ago · -1 km deep · 3 km away
  28. 4.538 km NNE of Amboy, Washington · 16965 days ago · 1 km deep · 4 km away
  29. 4.337 km NNE of Amboy, Washington · 16965 days ago · -1 km deep · 5 km away
  30. 3.936 km NNE of Amboy, Washington · 16965 days ago · 1 km deep · 5 km away
  31. 4.7Washington · 16965 days ago · 1 km deep · 4 km away
  32. 4.037 km NNE of Amboy, Washington · 16965 days ago · 0 km deep · 5 km away
  33. 3.938 km NNE of Amboy, Washington · 16965 days ago · 0 km deep · 4 km away
  34. 3.938 km NNE of Amboy, Washington · 16965 days ago · 0 km deep · 4 km away
  35. 4.138 km NNE of Amboy, Washington · 16965 days ago · 0 km deep · 4 km away
  36. 3.938 km NNE of Amboy, Washington · 16965 days ago · -1 km deep · 4 km away
  37. 3.838 km NNE of Amboy, Washington · 16965 days ago · 0 km deep · 4 km away
  38. 4.138 km NNE of Amboy, Washington · 16965 days ago · -1 km deep · 4 km away
  39. 5.039 km S of Morton, Washington · 16965 days ago · -1 km deep · 4 km away
  40. 4.128 km SW of Packwood, Washington · 16964 days ago · 5 km deep · 28 km away
  41. 2.739 km NNE of Amboy, Washington · 16964 days ago · -1 km deep · 4 km away
  42. 3.537 km NNE of Amboy, Washington · 16964 days ago · 6 km deep · 5 km away
  43. 4.038 km NNE of Amboy, Washington · 16964 days ago · 1 km deep · 4 km away
  44. 3.838 km S of Morton, Washington · 16964 days ago · 0 km deep · 3 km away
  45. 4.138 km NNE of Amboy, Washington · 16964 days ago · 1 km deep · 5 km away
  46. 4.839 km NNE of Amboy, Washington · 16964 days ago · -1 km deep · 4 km away
  47. 4.639 km S of Morton, Washington · 16964 days ago · 2 km deep · 4 km away
  48. 3.538 km S of Morton, Washington · 16963 days ago · 2 km deep · 3 km away
  49. 4.238 km NNE of Amboy, Washington · 16963 days ago · -1 km deep · 4 km away
  50. 4.738 km NNE of Amboy, Washington · 16963 days ago · 0 km deep · 4 km away
  51. 4.036 km NNE of Amboy, Washington · 16963 days ago · 1 km deep · 6 km away
  52. 3.837 km NNE of Amboy, Washington · 16963 days ago · 0 km deep · 5 km away
  53. 3.638 km NNE of Amboy, Washington · 16963 days ago · 0 km deep · 4 km away
  54. 3.938 km NNE of Amboy, Washington · 16963 days ago · -1 km deep · 5 km away
  55. 3.738 km NNE of Amboy, Washington · 16963 days ago · -1 km deep · 5 km away
  56. 5.038 km S of Morton, Washington · 16963 days ago · 0 km deep · 3 km away
  57. 3.139 km NNE of Amboy, Washington · 16962 days ago · -1 km deep · 4 km away
  58. 4.038 km NNE of Amboy, Washington · 16962 days ago · -1 km deep · 4 km away
  59. 4.739 km S of Morton, Washington · 16962 days ago · -1 km deep · 4 km away
  60. 3.937 km NNE of Amboy, Washington · 16962 days ago · 0 km deep · 5 km away

The first 60 of at least 200.

Before

  1. 4.238 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 5 km away
  2. 3.838 km NNE of Amboy, Washington · 16967 days ago · 2 km deep · 4 km away
  3. 4.638 km S of Morton, Washington · 16967 days ago · 1 km deep · 3 km away
  4. 3.638 km NNE of Amboy, Washington · 16967 days ago · 1 km deep · 4 km away
  5. 3.938 km NNE of Amboy, Washington · 16967 days ago · -1 km deep · 4 km away
  6. 4.039 km S of Morton, Washington · 16968 days ago · -1 km deep · 4 km away
  7. 4.038 km NNE of Amboy, Washington · 16968 days ago · -1 km deep · 4 km away
  8. 4.338 km NNE of Amboy, Washington · 16968 days ago · -1 km deep · 4 km away
  9. 4.738 km SSE of Morton, Washington · 16968 days ago · -1 km deep · 3 km away
  10. 3.738 km NNE of Amboy, Washington · 16968 days ago · -1 km deep · 4 km away
  11. 3.837 km SSE of Morton, Washington · 16968 days ago · 0 km deep · 3 km away
  12. 2.338 km NNE of Amboy, Washington · 16968 days ago · 0 km deep · 5 km away
  13. 5.039 km NNE of Amboy, Washington · 16968 days ago · -1 km deep · 4 km away
  14. 2.039 km NNE of Amboy, Washington · 16968 days ago · -1 km deep · 4 km away
  15. 3.638 km NNE of Amboy, Washington · 16968 days ago · 0 km deep · 4 km away
  16. 4.039 km NNE of Amboy, Washington · 16968 days ago · -1 km deep · 4 km away
  17. 3.638 km NNE of Amboy, Washington · 16969 days ago · 0 km deep · 5 km away
  18. 4.139 km NE of Amboy, Washington · 16969 days ago · -1 km deep · 6 km away
  19. 1.638 km S of Morton, Washington · 16969 days ago · -1 km deep · 3 km away
  20. 4.338 km NNE of Amboy, Washington · 16969 days ago · -1 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10079963 (also filed as usp00016kq). Read Sat, Sep 26, 2026, 8:23 AM UTC.