Washington earthquakes

M1.8 earthquake 1 km SSE of Castle Rock, Washington

A magnitude 1.8 earthquake struck 1 km SSE of Castle Rock, Washington on Wed, Mar 2, 1983, 5:33 AM PST (13:33 UTC), 15 km (10 mi) below the surface.

A larger quake followed: M2.1 36 km S of Morton, Washington. This one was a foreshock.

Castle Rock 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
1.8 (md), micro
Local time
UTC
1983-03-02 13:33:55 UTC
Depth
15.4 km (9.6 mi), shallow
Epicenter
46.264° N, 122.899° 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 0.7 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
108°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.7Washington · 15909 days ago · 17 km deep · 26 km away
  2. 2.136 km S of Morton, Washington · 15909 days ago · -2 km deep · 54 km away
  3. 1.638 km NNE of Amboy, Washington · 15908 days ago · -1 km deep · 56 km away
  4. 1.537 km NNE of Amboy, Washington · 15908 days ago · -1 km deep · 55 km away
  5. 1.636 km NNE of Amboy, Washington · 15908 days ago · -1 km deep · 55 km away
  6. 1.938 km NNE of Amboy, Washington · 15907 days ago · -2 km deep · 55 km away
  7. 1.538 km NNE of Amboy, Washington · 15907 days ago · -2 km deep · 55 km away
  8. 1.539 km NNE of Amboy, Washington · 15906 days ago · -2 km deep · 55 km away
  9. 1.538 km NNE of Amboy, Washington · 15906 days ago · -2 km deep · 55 km away
  10. 1.638 km NNE of Amboy, Washington · 15904 days ago · -2 km deep · 55 km away
  11. 1.538 km NNE of Amboy, Washington · 15904 days ago · -2 km deep · 55 km away
  12. 2.137 km NNE of Amboy, Washington · 15902 days ago · -1 km deep · 55 km away
  13. 2.17 km S of Onalaska, Washington · 15902 days ago · 22 km deep · 30 km away
  14. 1.621 km ESE of Castle Rock, Washington · 15899 days ago · 13 km deep · 21 km away
  15. 2.921 km ESE of Castle Rock, Washington · 15899 days ago · 14 km deep · 21 km away
  16. 1.624 km S of Morton, Washington · 15897 days ago · 4 km deep · 53 km away
  17. 2.78 km S of Onalaska, Washington · 15896 days ago · 23 km deep · 30 km away
  18. 1.522 km S of Morton, Washington · 15894 days ago · 6 km deep · 52 km away
  19. 2.034 km NE of Amboy, Washington · 15892 days ago · 8 km deep · 64 km away
  20. 1.97 km S of Onalaska, Washington · 15884 days ago · 24 km deep · 30 km away
  21. 1.538 km NNE of Amboy, Washington · 15883 days ago · -1 km deep · 55 km away
  22. 2.112 km NW of Morton, Washington · 15882 days ago · 9 km deep · 57 km away
  23. 1.921 km ESE of Castle Rock, Washington · 15880 days ago · 13 km deep · 21 km away
  24. 1.537 km NNE of Amboy, Washington · 15880 days ago · -1 km deep · 53 km away
  25. 2.112 km ESE of Skamokawa Valley, Washington · 15877 days ago · 26 km deep · 27 km away
  26. 1.538 km NNE of Amboy, Washington · 15875 days ago · -2 km deep · 55 km away
  27. 1.538 km NNE of Amboy, Washington · 15875 days ago · -1 km deep · 55 km away
  28. 1.539 km S of Morton, Washington · 15874 days ago · -2 km deep · 55 km away
  29. 1.538 km S of Morton, Washington · 15874 days ago · -2 km deep · 55 km away
  30. 1.539 km NNE of Amboy, Washington · 15874 days ago · -2 km deep · 56 km away
  31. 1.98 km NE of Mossyrock, Washington · 15874 days ago · 15 km deep · 52 km away
  32. 1.638 km NNE of Amboy, Washington · 15873 days ago · -2 km deep · 55 km away
  33. 1.812 km NW of Packwood, Washington · 15872 days ago · 7 km deep · 96 km away
  34. 1.522 km S of Morton, Washington · 15869 days ago · 9 km deep · 51 km away
  35. 2.021 km S of Morton, Washington · 15869 days ago · 7 km deep · 52 km away
  36. 1.638 km NNE of Amboy, Washington · 15868 days ago · 0 km deep · 55 km away
  37. 1.539 km NNE of Amboy, Washington · 15868 days ago · -2 km deep · 56 km away
  38. 1.538 km NNE of Amboy, Washington · 15868 days ago · -2 km deep · 55 km away
  39. 1.538 km NNE of Amboy, Washington · 15867 days ago · 0 km deep · 55 km away
  40. 1.637 km NNE of Amboy, Washington · 15866 days ago · 0 km deep · 54 km away
  41. 1.538 km NNE of Amboy, Washington · 15866 days ago · -2 km deep · 55 km away
  42. 1.538 km NNE of Amboy, Washington · 15866 days ago · -2 km deep · 56 km away
  43. 1.738 km NNE of Amboy, Washington · 15866 days ago · -2 km deep · 55 km away
  44. 1.638 km NNE of Amboy, Washington · 15865 days ago · -2 km deep · 55 km away
  45. 1.538 km NNE of Amboy, Washington · 15864 days ago · -2 km deep · 55 km away
  46. 1.638 km NNE of Amboy, Washington · 15863 days ago · -2 km deep · 55 km away
  47. 1.738 km NNE of Amboy, Washington · 15862 days ago · -2 km deep · 55 km away
  48. 1.538 km NNE of Amboy, Washington · 15862 days ago · 1 km deep · 55 km away
  49. 2.322 km S of Morton, Washington · 15861 days ago · 8 km deep · 51 km away
  50. 2.322 km S of Morton, Washington · 15861 days ago · 8 km deep · 51 km away
  51. 1.738 km NNE of Amboy, Washington · 15859 days ago · -2 km deep · 55 km away
  52. 1.938 km NNE of Amboy, Washington · 15859 days ago · -2 km deep · 55 km away
  53. 1.637 km NNE of Amboy, Washington · 15859 days ago · 0 km deep · 55 km away
  54. 2.039 km NNE of Amboy, Washington · 15857 days ago · -2 km deep · 55 km away
  55. 1.539 km NNE of Amboy, Washington · 15855 days ago · -2 km deep · 55 km away
  56. 1.738 km NNE of Amboy, Washington · 15854 days ago · -1 km deep · 55 km away
  57. 2.18 km WSW of Felida, Washington · 15854 days ago · 17 km deep · 66 km away
  58. 2.138 km NNE of Amboy, Washington · 15853 days ago · -2 km deep · 55 km away
  59. 1.638 km NNE of Amboy, Washington · 15851 days ago · -2 km deep · 55 km away
  60. 1.538 km NNE of Amboy, Washington · 15851 days ago · -2 km deep · 55 km away

The first 60 of 62.

Before

  1. 1.638 km NNE of Amboy, Washington · 15911 days ago · -1 km deep · 55 km away
  2. 1.938 km S of Morton, Washington · 15911 days ago · -1 km deep · 55 km away
  3. 1.921 km S of Morton, Washington · 15919 days ago · 7 km deep · 51 km away
  4. 1.67 km W of Mossyrock, Washington · 15929 days ago · 19 km deep · 37 km away
  5. 1.66 km E of West Side Highway, Washington · 15930 days ago · 10 km deep · 10 km away
  6. 2.22 km WSW of Chehalis, Washington · 15935 days ago · 51 km deep · 44 km away
  7. 2.235 km NNE of Amboy, Washington · 15936 days ago · 1 km deep · 54 km away
  8. 1.76 km NNW of Woodland, Washington · 15937 days ago · 16 km deep · 36 km away
  9. 1.738 km NNE of Amboy, Washington · 15937 days ago · -1 km deep · 55 km away
  10. 2.837 km NNE of Amboy, Washington · 15938 days ago · 0 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10148933. Read Tue, Sep 22, 2026, 9:39 AM UTC.