Washington earthquakes

M1.6 earthquake 24 km S of Morton, Washington

A magnitude 1.6 earthquake struck 24 km S of Morton, Washington on Sun, Mar 18, 1984, 5:39 AM PST (13:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.3 12 km WSW of La Grande, 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1984-03-18 13:39:37 UTC
Depth
10.2 km (6.4 mi), shallow
Epicenter
46.341° N, 122.251° 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
±0.07
Depth from
From location
Station coverage gap
57°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 196 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.538 km NNE of Amboy, Washington · 15537 days ago · -1 km deep · 16 km away
  2. 1.538 km NNE of Amboy, Washington · 15536 days ago · -2 km deep · 16 km away
  3. 2.01 km W of Wilkeson, Washington · 15535 days ago · 5 km deep · 86 km away
  4. 1.538 km NNE of Amboy, Washington · 15535 days ago · -2 km deep · 16 km away
  5. 1.738 km NNE of Amboy, Washington · 15535 days ago · -1 km deep · 16 km away
  6. 1.538 km NNE of Amboy, Washington · 15534 days ago · -1 km deep · 16 km away
  7. 1.738 km NNE of Amboy, Washington · 15534 days ago · -1 km deep · 16 km away
  8. 1.638 km NNE of Amboy, Washington · 15534 days ago · -2 km deep · 16 km away
  9. 1.638 km NNE of Amboy, Washington · 15534 days ago · -2 km deep · 16 km away
  10. 2.138 km NNE of Amboy, Washington · 15534 days ago · -1 km deep · 16 km away
  11. 2.338 km NNE of Amboy, Washington · 15533 days ago · -2 km deep · 16 km away
  12. 1.838 km NNE of Amboy, Washington · 15532 days ago · -1 km deep · 16 km away
  13. 1.738 km NNE of Amboy, Washington · 15532 days ago · -1 km deep · 16 km away
  14. 2.138 km NNE of Amboy, Washington · 15532 days ago · 0 km deep · 16 km away
  15. 2.023 km ENE of Ashford, Washington · 15531 days ago · 4 km deep · 69 km away
  16. 1.538 km NNE of Amboy, Washington · 15531 days ago · -1 km deep · 16 km away
  17. 1.738 km NNE of Amboy, Washington · 15530 days ago · 0 km deep · 16 km away
  18. 1.838 km NNE of Amboy, Washington · 15530 days ago · -1 km deep · 16 km away
  19. 1.6Washington · 15530 days ago · -1 km deep · 16 km away
  20. 1.638 km NNE of Amboy, Washington · 15530 days ago · -2 km deep · 16 km away
  21. 1.838 km NNE of Amboy, Washington · 15530 days ago · -2 km deep · 16 km away
  22. 1.638 km NNE of Amboy, Washington · 15530 days ago · -2 km deep · 16 km away
  23. 1.838 km NNE of Amboy, Washington · 15530 days ago · -2 km deep · 16 km away
  24. 1.538 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  25. 1.638 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  26. 1.538 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  27. 1.838 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  28. 1.8Washington · 15529 days ago · -2 km deep · 16 km away
  29. 1.638 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  30. 1.838 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  31. 1.538 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  32. 2.138 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  33. 1.538 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  34. 1.838 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  35. 2.038 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  36. 1.638 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  37. 1.738 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  38. 1.538 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  39. 1.638 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  40. 1.638 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  41. 1.838 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  42. 1.638 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  43. 1.838 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  44. 1.838 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  45. 1.638 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  46. 2.038 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  47. 2.038 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  48. 1.838 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  49. 1.738 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  50. 1.838 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  51. 2.438 km NNE of Amboy, Washington · 15529 days ago · 0 km deep · 16 km away
  52. 1.538 km NNE of Amboy, Washington · 15529 days ago · -1 km deep · 16 km away
  53. 2.138 km NNE of Amboy, Washington · 15529 days ago · -2 km deep · 16 km away
  54. 1.638 km NNE of Amboy, Washington · 15528 days ago · -2 km deep · 16 km away
  55. 1.838 km NNE of Amboy, Washington · 15528 days ago · -1 km deep · 16 km away
  56. 1.938 km NNE of Amboy, Washington · 15528 days ago · -1 km deep · 16 km away
  57. 1.638 km NNE of Amboy, Washington · 15528 days ago · -1 km deep · 16 km away
  58. 1.538 km NNE of Amboy, Washington · 15528 days ago · -1 km deep · 16 km away
  59. 2.038 km NNE of Amboy, Washington · 15528 days ago · -1 km deep · 16 km away
  60. 1.538 km NNE of Amboy, Washington · 15528 days ago · -1 km deep · 16 km away

The first 60 of 196.

Before

  1. 1.9Washington · 15541 days ago · -1 km deep · 69 km away
  2. 1.9Washington-Oregon border region · 15541 days ago · 0 km deep · 88 km away
  3. 1.838 km NNE of Amboy, Washington · 15541 days ago · -1 km deep · 16 km away
  4. 1.68 km E of Wilkeson, Washington · 15542 days ago · 9 km deep · 90 km away
  5. 1.511 km NNE of Ashford, Washington · 15550 days ago · 11 km deep · 61 km away
  6. 1.56 km WNW of Tumwater, Washington · 15551 days ago · -1 km deep · 94 km away
  7. 2.010 km WSW of Ryderwood, Washington · 15561 days ago · 17 km deep · 71 km away
  8. 2.538 km NNE of Amboy, Washington · 15563 days ago · -1 km deep · 16 km away
  9. 1.838 km NNE of Amboy, Washington · 15566 days ago · 0 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10174843. Read Fri, Oct 2, 2026, 3:17 PM UTC.