Washington earthquakes

M1.8 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.8 earthquake struck 38 km NNE of Amboy, Washington on Mon, Aug 13, 1984, 1:18 AM PDT (08:18 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.5 38 km NNE of Amboy, Washington. This one was a foreshock.

Amboy 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1984-08-13 08:18:59 UTC
Depth
-1.6 km (-1.0 mi), shallow
Epicenter
46.207° N, 122.190° 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, 1.0 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
88°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 69 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 1.838 km NNE of Amboy, Washington · 15391 days ago · -1 km deep · 1 km away
  2. 1.838 km NNE of Amboy, Washington · 15388 days ago · -1 km deep · 0 km away
  3. 2.337 km NNE of Amboy, Washington · 15388 days ago · -1 km deep · 1 km away
  4. 1.738 km NNE of Amboy, Washington · 15388 days ago · -2 km deep · 0 km away
  5. 2.038 km NNE of Amboy, Washington · 15386 days ago · -2 km deep · 0 km away
  6. 1.938 km NE of Amboy, Washington · 15381 days ago · -2 km deep · 3 km away
  7. 1.538 km NNE of Amboy, Washington · 15380 days ago · -2 km deep · 0 km away
  8. 2.337 km NNE of Amboy, Washington · 15380 days ago · -1 km deep · 1 km away
  9. 2.037 km NNE of Amboy, Washington · 15380 days ago · -1 km deep · 1 km away
  10. 2.22 km ENE of Brush Prairie, Washington · 15379 days ago · 15 km deep · 58 km away
  11. 1.938 km NNE of Amboy, Washington · 15378 days ago · -1 km deep · 0 km away
  12. 2.338 km NNE of Amboy, Washington · 15377 days ago · -1 km deep · 0 km away
  13. 1.638 km NNE of Amboy, Washington · 15375 days ago · -1 km deep · 0 km away
  14. 1.838 km NNE of Amboy, Washington · 15374 days ago · -2 km deep · 0 km away
  15. 1.538 km NNE of Amboy, Washington · 15374 days ago · -1 km deep · 1 km away
  16. 1.638 km NNE of Amboy, Washington · 15374 days ago · -1 km deep · 1 km away
  17. 2.438 km NNE of Amboy, Washington · 15374 days ago · -1 km deep · 0 km away
  18. 1.838 km NNE of Amboy, Washington · 15374 days ago · -1 km deep · 0 km away
  19. 1.720 km S of Morton, Washington · 15374 days ago · 8 km deep · 19 km away
  20. 2.338 km NNE of Amboy, Washington · 15374 days ago · -1 km deep · 0 km away
  21. 2.438 km NNE of Amboy, Washington · 15373 days ago · -2 km deep · 0 km away
  22. 1.938 km NNE of Amboy, Washington · 15373 days ago · -1 km deep · 0 km away
  23. 1.638 km NNE of Amboy, Washington · 15372 days ago · -1 km deep · 1 km away
  24. 2.038 km NNE of Amboy, Washington · 15372 days ago · -1 km deep · 0 km away
  25. 1.538 km NNE of Amboy, Washington · 15371 days ago · -2 km deep · 1 km away
  26. 1.51 km SSE of Ridgefield, Washington · 15371 days ago · 10 km deep · 62 km away
  27. 1.638 km NNE of Amboy, Washington · 15370 days ago · -2 km deep · 0 km away
  28. 1.538 km NNE of Amboy, Washington · 15370 days ago · 0 km deep · 1 km away
  29. 1.538 km NNE of Amboy, Washington · 15370 days ago · -1 km deep · 0 km away
  30. 2.238 km NNE of Amboy, Washington · 15370 days ago · -1 km deep · 0 km away
  31. 1.638 km NNE of Amboy, Washington · 15370 days ago · -2 km deep · 0 km away
  32. 1.9Washington · 15369 days ago · -1 km deep · 0 km away
  33. 1.638 km NNE of Amboy, Washington · 15369 days ago · -1 km deep · 0 km away
  34. 1.938 km NNE of Amboy, Washington · 15369 days ago · -1 km deep · 1 km away
  35. 2.138 km NNE of Amboy, Washington · 15369 days ago · -1 km deep · 0 km away
  36. 1.538 km NNE of Amboy, Washington · 15368 days ago · -1 km deep · 1 km away
  37. 1.538 km NNE of Amboy, Washington · 15367 days ago · -2 km deep · 0 km away
  38. 1.838 km NNE of Amboy, Washington · 15367 days ago · 0 km deep · 0 km away
  39. 2.538 km NNE of Amboy, Washington · 15366 days ago · -2 km deep · 1 km away
  40. 1.738 km NNE of Amboy, Washington · 15365 days ago · -2 km deep · 1 km away
  41. 1.838 km NNE of Amboy, Washington · 15365 days ago · -2 km deep · 0 km away
  42. 1.738 km NNE of Amboy, Washington · 15365 days ago · -1 km deep · 0 km away
  43. 1.838 km NNE of Amboy, Washington · 15365 days ago · -2 km deep · 0 km away
  44. 1.837 km NNE of Amboy, Washington · 15365 days ago · 0 km deep · 1 km away
  45. 1.838 km NNE of Amboy, Washington · 15364 days ago · -2 km deep · 0 km away
  46. 1.538 km NNE of Amboy, Washington · 15364 days ago · -1 km deep · 0 km away
  47. 1.738 km NNE of Amboy, Washington · 15364 days ago · -1 km deep · 0 km away
  48. 1.538 km NNE of Amboy, Washington · 15364 days ago · -1 km deep · 0 km away
  49. 1.838 km NNE of Amboy, Washington · 15364 days ago · -1 km deep · 0 km away
  50. 1.738 km NNE of Amboy, Washington · 15364 days ago · -2 km deep · 0 km away
  51. 1.838 km NNE of Amboy, Washington · 15364 days ago · -2 km deep · 0 km away
  52. 1.838 km NNE of Amboy, Washington · 15364 days ago · -1 km deep · 0 km away
  53. 1.838 km NNE of Amboy, Washington · 15364 days ago · -2 km deep · 0 km away
  54. 2.038 km NNE of Amboy, Washington · 15364 days ago · -2 km deep · 0 km away
  55. 2.138 km NNE of Amboy, Washington · 15364 days ago · -1 km deep · 1 km away
  56. 2.238 km NNE of Amboy, Washington · 15363 days ago · -2 km deep · 1 km away
  57. 2.437 km NNE of Amboy, Washington · 15363 days ago · -1 km deep · 1 km away
  58. 2.037 km NNE of Amboy, Washington · 15363 days ago · -1 km deep · 1 km away
  59. 2.437 km NNE of Amboy, Washington · 15363 days ago · -2 km deep · 1 km away
  60. 2.238 km NNE of Amboy, Washington · 15362 days ago · -2 km deep · 0 km away

The first 60 of 69.

Before

  1. 2.138 km NNE of Amboy, Washington · 15392 days ago · -1 km deep · 1 km away
  2. 2.138 km NNE of Amboy, Washington · 15392 days ago · -1 km deep · 1 km away
  3. 1.7Washington · 15394 days ago · 15 km deep · 43 km away
  4. 1.738 km NNE of Amboy, Washington · 15395 days ago · -1 km deep · 0 km away
  5. 3.112 km S of Morton, Washington · 15399 days ago · 10 km deep · 27 km away
  6. 1.513 km NW of Amboy, Washington · 15403 days ago · 10 km deep · 40 km away
  7. 1.938 km NNE of Amboy, Washington · 15404 days ago · -1 km deep · 0 km away
  8. 1.838 km NNE of Amboy, Washington · 15404 days ago · -1 km deep · 1 km away
  9. 2.237 km NNE of Amboy, Washington · 15405 days ago · -1 km deep · 1 km away
  10. 1.638 km NNE of Amboy, Washington · 15406 days ago · -1 km deep · 1 km away
  11. 1.72 km NE of Brush Prairie, Washington · 15406 days ago · 15 km deep · 57 km away
  12. 1.734 km NE of Amboy, Washington · 15406 days ago · 8 km deep · 6 km away
  13. 1.837 km NNE of Amboy, Washington · 15408 days ago · -1 km deep · 1 km away
  14. 1.638 km NNE of Amboy, Washington · 15409 days ago · -1 km deep · 0 km away
  15. 2.437 km NE of Amboy, Washington · 15410 days ago · -1 km deep · 2 km away
  16. 2.238 km NNE of Amboy, Washington · 15410 days ago · -1 km deep · 0 km away
  17. 1.82 km NW of Hockinson, Washington · 15410 days ago · 15 km deep · 56 km away
  18. 2.038 km NNE of Amboy, Washington · 15412 days ago · -1 km deep · 0 km away
  19. 2.238 km NNE of Amboy, Washington · 15412 days ago · -1 km deep · 0 km away
  20. 2.038 km NNE of Amboy, Washington · 15412 days ago · -1 km deep · 0 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10179508. Read Sat, Oct 3, 2026, 5:40 PM UTC.