Washington earthquakes

M1.5 earthquake 22 km S of Morton, Washington

A magnitude 1.5 earthquake struck 22 km S of Morton, Washington on Tue, Apr 12, 1983, 11:02 AM PST (19:02 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.7 24 km ESE of Packwood, 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
1.5 (md), micro
Local time
UTC
1983-04-12 19:02:34 UTC
Depth
9.1 km (5.7 mi), shallow
Epicenter
46.360° N, 122.250° 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
54°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 98 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 2.021 km S of Morton, Washington · 15877 days ago · 7 km deep · 1 km away
  2. 1.638 km NNE of Amboy, Washington · 15877 days ago · 0 km deep · 18 km away
  3. 1.539 km NNE of Amboy, Washington · 15876 days ago · -2 km deep · 18 km away
  4. 1.538 km NNE of Amboy, Washington · 15876 days ago · -2 km deep · 18 km away
  5. 1.538 km NNE of Amboy, Washington · 15875 days ago · 0 km deep · 18 km away
  6. 1.637 km NNE of Amboy, Washington · 15875 days ago · 0 km deep · 18 km away
  7. 1.538 km NNE of Amboy, Washington · 15874 days ago · -2 km deep · 18 km away
  8. 1.538 km NNE of Amboy, Washington · 15874 days ago · -2 km deep · 18 km away
  9. 1.738 km NNE of Amboy, Washington · 15874 days ago · -2 km deep · 17 km away
  10. 1.638 km NNE of Amboy, Washington · 15873 days ago · -2 km deep · 18 km away
  11. 1.538 km NNE of Amboy, Washington · 15872 days ago · -2 km deep · 17 km away
  12. 1.638 km NNE of Amboy, Washington · 15871 days ago · -2 km deep · 17 km away
  13. 1.738 km NNE of Amboy, Washington · 15871 days ago · -2 km deep · 18 km away
  14. 1.538 km NNE of Amboy, Washington · 15870 days ago · 1 km deep · 18 km away
  15. 2.322 km S of Morton, Washington · 15870 days ago · 8 km deep · 0 km away
  16. 2.322 km S of Morton, Washington · 15870 days ago · 8 km deep · 0 km away
  17. 1.738 km NNE of Amboy, Washington · 15868 days ago · -2 km deep · 17 km away
  18. 1.938 km NNE of Amboy, Washington · 15868 days ago · -2 km deep · 18 km away
  19. 1.716 km SSW of Greenwater, Washington · 15868 days ago · -1 km deep · 84 km away
  20. 1.637 km NNE of Amboy, Washington · 15868 days ago · 0 km deep · 19 km away
  21. 2.039 km NNE of Amboy, Washington · 15865 days ago · -2 km deep · 17 km away
  22. 2.724 km ESE of Packwood, Washington · 15865 days ago · 4 km deep · 69 km away
  23. 1.539 km NNE of Amboy, Washington · 15864 days ago · -2 km deep · 17 km away
  24. 1.738 km NNE of Amboy, Washington · 15863 days ago · -1 km deep · 18 km away
  25. 2.18 km WSW of Felida, Washington · 15862 days ago · 17 km deep · 88 km away
  26. 1.921 km SSE of Greenwater, Washington · 15861 days ago · 6 km deep · 91 km away
  27. 2.138 km NNE of Amboy, Washington · 15861 days ago · -2 km deep · 17 km away
  28. 1.638 km NNE of Amboy, Washington · 15860 days ago · -2 km deep · 18 km away
  29. 1.538 km NNE of Amboy, Washington · 15860 days ago · -2 km deep · 17 km away
  30. 1.639 km NNE of Amboy, Washington · 15860 days ago · -2 km deep · 17 km away
  31. 1.538 km NNE of Amboy, Washington · 15859 days ago · -2 km deep · 18 km away
  32. 1.521 km SE of Greenwater, Washington · 15859 days ago · 6 km deep · 92 km away
  33. 1.538 km NNE of Amboy, Washington · 15857 days ago · -1 km deep · 18 km away
  34. 1.638 km NNE of Amboy, Washington · 15856 days ago · -2 km deep · 18 km away
  35. 1.838 km NNE of Amboy, Washington · 15854 days ago · -2 km deep · 18 km away
  36. 2.322 km S of Morton, Washington · 15854 days ago · 6 km deep · 1 km away
  37. 2.022 km SE of Greenwater, Washington · 15851 days ago · 6 km deep · 92 km away
  38. 1.938 km NNE of Amboy, Washington · 15851 days ago · -2 km deep · 18 km away
  39. 1.939 km NNE of Amboy, Washington · 15850 days ago · -2 km deep · 18 km away
  40. 2.037 km NNE of Amboy, Washington · 15849 days ago · 0 km deep · 19 km away
  41. 1.838 km NNE of Amboy, Washington · 15848 days ago · -2 km deep · 18 km away
  42. 1.57 km ENE of Ashford, Washington · 15848 days ago · 5 km deep · 52 km away
  43. 2.67 km NNE of Bethany, Oregon · 15848 days ago · -1 km deep · 94 km away
  44. 1.638 km NNE of Amboy, Washington · 15848 days ago · -2 km deep · 18 km away
  45. 1.638 km NNE of Amboy, Washington · 15847 days ago · -2 km deep · 18 km away
  46. 1.838 km NNE of Amboy, Washington · 15847 days ago · -2 km deep · 17 km away
  47. 1.738 km NNE of Amboy, Washington · 15847 days ago · 0 km deep · 17 km away
  48. 1.838 km NNE of Amboy, Washington · 15846 days ago · -2 km deep · 18 km away
  49. 1.939 km NNE of Amboy, Washington · 15846 days ago · -1 km deep · 18 km away
  50. 1.838 km NNE of Amboy, Washington · 15845 days ago · -1 km deep · 18 km away
  51. 2.038 km NNE of Amboy, Washington · 15845 days ago · -2 km deep · 17 km away
  52. 2.339 km NNE of Amboy, Washington · 15844 days ago · -2 km deep · 17 km away
  53. 2.138 km NNE of Amboy, Washington · 15843 days ago · -2 km deep · 18 km away
  54. 1.838 km NNE of Amboy, Washington · 15843 days ago · -1 km deep · 17 km away
  55. 1.738 km NNE of Amboy, Washington · 15842 days ago · -2 km deep · 18 km away
  56. 2.137 km NNE of Amboy, Washington · 15842 days ago · -2 km deep · 19 km away
  57. 1.737 km NNE of Amboy, Washington · 15842 days ago · -2 km deep · 19 km away
  58. 2.238 km NNE of Amboy, Washington · 15841 days ago · -2 km deep · 18 km away
  59. 2.137 km NNE of Amboy, Washington · 15841 days ago · 0 km deep · 19 km away
  60. 1.538 km NNE of Amboy, Washington · 15840 days ago · -2 km deep · 17 km away

The first 60 of 98.

Before

  1. 1.812 km NW of Packwood, Washington · 15881 days ago · 7 km deep · 49 km away
  2. 1.638 km NNE of Amboy, Washington · 15882 days ago · -2 km deep · 18 km away
  3. 1.98 km NE of Mossyrock, Washington · 15882 days ago · 15 km deep · 29 km away
  4. 1.539 km NNE of Amboy, Washington · 15882 days ago · -2 km deep · 18 km away
  5. 1.538 km S of Morton, Washington · 15883 days ago · -2 km deep · 17 km away
  6. 1.539 km S of Morton, Washington · 15883 days ago · -2 km deep · 17 km away
  7. 1.538 km NNE of Amboy, Washington · 15883 days ago · -1 km deep · 18 km away
  8. 1.538 km NNE of Amboy, Washington · 15884 days ago · -2 km deep · 17 km away
  9. 1.913 km E of Wilkeson, Washington · 15884 days ago · 9 km deep · 86 km away
  10. 2.112 km ESE of Skamokawa Valley, Washington · 15885 days ago · 26 km deep · 77 km away
  11. 1.537 km NNE of Amboy, Washington · 15888 days ago · -1 km deep · 17 km away
  12. 1.921 km ESE of Castle Rock, Washington · 15889 days ago · 13 km deep · 33 km away
  13. 2.112 km NW of Morton, Washington · 15891 days ago · 9 km deep · 33 km away
  14. 1.538 km NNE of Amboy, Washington · 15891 days ago · -1 km deep · 18 km away
  15. 1.97 km S of Onalaska, Washington · 15892 days ago · 24 km deep · 40 km away
  16. 1.714 km SSE of Carbonado, Washington · 15894 days ago · 5 km deep · 70 km away
  17. 2.034 km NE of Amboy, Washington · 15900 days ago · 8 km deep · 31 km away
  18. 1.522 km S of Morton, Washington · 15902 days ago · 6 km deep · 1 km away
  19. 2.78 km S of Onalaska, Washington · 15905 days ago · 23 km deep · 40 km away
  20. 1.624 km S of Morton, Washington · 15905 days ago · 4 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10157473. Read Wed, Sep 30, 2026, 6:14 PM UTC.