Washington earthquakes

M1.8 earthquake 26 km S of Morton, Washington

A magnitude 1.8 earthquake struck 26 km S of Morton, Washington on Mon, Dec 12, 1983, 8:04 PM PST (04:04 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.0 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
1.8 (md), micro
Local time
UTC
1983-12-13 04:04:47 UTC
Depth
7.9 km (4.9 mi), shallow
Epicenter
46.325° N, 122.238° 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 0.3 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
87°
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 113 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 1.838 km NNE of Amboy, Washington · 15624 days ago · -2 km deep · 14 km away
  2. 1.537 km NNE of Amboy, Washington · 15624 days ago · -2 km deep · 14 km away
  3. 2.038 km NNE of Amboy, Washington · 15624 days ago · -2 km deep · 14 km away
  4. 1.938 km NNE of Amboy, Washington · 15624 days ago · -2 km deep · 14 km away
  5. 1.537 km NNE of Amboy, Washington · 15621 days ago · -1 km deep · 15 km away
  6. 1.538 km NNE of Amboy, Washington · 15620 days ago · -1 km deep · 14 km away
  7. 1.934 km NE of Amboy, Washington · 15620 days ago · 9 km deep · 26 km away
  8. 2.138 km NNE of Amboy, Washington · 15618 days ago · -2 km deep · 14 km away
  9. 1.538 km NNE of Amboy, Washington · 15616 days ago · -2 km deep · 14 km away
  10. 1.739 km NNE of Amboy, Washington · 15616 days ago · -2 km deep · 13 km away
  11. 2.239 km S of Morton, Washington · 15615 days ago · -1 km deep · 13 km away
  12. 1.937 km NNE of Amboy, Washington · 15611 days ago · -2 km deep · 15 km away
  13. 3.020 km E of Castle Rock, Washington · 15609 days ago · 13 km deep · 32 km away
  14. 2.620 km SSE of Mossyrock, Washington · 15608 days ago · 7 km deep · 14 km away
  15. 2.010 km SSW of Morton, Washington · 15599 days ago · 8 km deep · 17 km away
  16. 2.230 km N of Packwood, Washington · 15595 days ago · 5 km deep · 78 km away
  17. 1.723 km S of Morton, Washington · 15595 days ago · 5 km deep · 2 km away
  18. 1.838 km NNE of Amboy, Washington · 15592 days ago · -1 km deep · 14 km away
  19. 2.013 km NNE of Ashford, Washington · 15591 days ago · 7 km deep · 64 km away
  20. 2.013 km SE of Carbonado, Washington · 15589 days ago · 17 km deep · 80 km away
  21. 1.637 km NNE of Amboy, Washington · 15583 days ago · 1 km deep · 14 km away
  22. 2.038 km NNE of Amboy, Washington · 15576 days ago · -1 km deep · 14 km away
  23. 1.638 km NNE of Amboy, Washington · 15575 days ago · -2 km deep · 14 km away
  24. 1.538 km NNE of Amboy, Washington · 15575 days ago · -2 km deep · 14 km away
  25. 2.638 km NNE of Amboy, Washington · 15574 days ago · -1 km deep · 14 km away
  26. 1.738 km NNE of Amboy, Washington · 15574 days ago · -2 km deep · 15 km away
  27. 2.238 km NNE of Amboy, Washington · 15574 days ago · -1 km deep · 14 km away
  28. 1.638 km NNE of Amboy, Washington · 15574 days ago · -2 km deep · 14 km away
  29. 1.738 km NNE of Amboy, Washington · 15574 days ago · -2 km deep · 14 km away
  30. 2.238 km NNE of Amboy, Washington · 15573 days ago · -1 km deep · 14 km away
  31. 1.737 km NNE of Amboy, Washington · 15573 days ago · 1 km deep · 14 km away
  32. 1.538 km NNE of Amboy, Washington · 15573 days ago · -1 km deep · 14 km away
  33. 1.538 km NNE of Amboy, Washington · 15573 days ago · 1 km deep · 13 km away
  34. 1.738 km S of Morton, Washington · 15573 days ago · 1 km deep · 13 km away
  35. 1.638 km NNE of Amboy, Washington · 15573 days ago · -2 km deep · 14 km away
  36. 1.538 km NNE of Amboy, Washington · 15573 days ago · -1 km deep · 14 km away
  37. 2.038 km NNE of Amboy, Washington · 15573 days ago · -2 km deep · 14 km away
  38. 1.838 km NNE of Amboy, Washington · 15572 days ago · -1 km deep · 14 km away
  39. 1.539 km NNE of Amboy, Washington · 15572 days ago · -1 km deep · 13 km away
  40. 1.538 km NNE of Amboy, Washington · 15572 days ago · -1 km deep · 14 km away
  41. 1.538 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  42. 1.538 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  43. 1.539 km S of Morton, Washington · 15572 days ago · -2 km deep · 13 km away
  44. 1.538 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  45. 2.137 km NNE of Amboy, Washington · 15572 days ago · 0 km deep · 14 km away
  46. 1.538 km NNE of Amboy, Washington · 15572 days ago · -1 km deep · 14 km away
  47. 1.938 km NNE of Amboy, Washington · 15572 days ago · -1 km deep · 14 km away
  48. 1.738 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  49. 1.738 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  50. 1.638 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  51. 1.738 km NNE of Amboy, Washington · 15572 days ago · -2 km deep · 14 km away
  52. 1.838 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  53. 1.738 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  54. 1.738 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  55. 1.838 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  56. 2.037 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 15 km away
  57. 2.138 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  58. 1.638 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  59. 1.738 km NNE of Amboy, Washington · 15571 days ago · -2 km deep · 14 km away
  60. 1.838 km NNE of Amboy, Washington · 15571 days ago · -1 km deep · 14 km away

The first 60 of 113.

Before

  1. 1.538 km NNE of Amboy, Washington · 15628 days ago · -1 km deep · 14 km away
  2. 1.738 km NNE of Amboy, Washington · 15633 days ago · -2 km deep · 14 km away
  3. 2.038 km NNE of Amboy, Washington · 15639 days ago · -2 km deep · 14 km away
  4. 1.937 km NNE of Amboy, Washington · 15639 days ago · -2 km deep · 15 km away
  5. 1.638 km NNE of Amboy, Washington · 15639 days ago · -2 km deep · 14 km away
  6. 1.638 km NNE of Amboy, Washington · 15640 days ago · -2 km deep · 14 km away
  7. 1.838 km NNE of Amboy, Washington · 15640 days ago · -2 km deep · 14 km away
  8. 1.8Washington · 15641 days ago · -2 km deep · 14 km away
  9. 1.835 km S of Morton, Washington · 15645 days ago · -2 km deep · 9 km away
  10. 1.638 km NNE of Amboy, Washington · 15645 days ago · -2 km deep · 14 km away
  11. 1.838 km NNE of Amboy, Washington · 15645 days ago · 1 km deep · 13 km away
  12. 1.838 km NNE of Amboy, Washington · 15646 days ago · -2 km deep · 14 km away
  13. 2.138 km S of Morton, Washington · 15649 days ago · -2 km deep · 13 km away
  14. 2.138 km NNE of Amboy, Washington · 15651 days ago · -2 km deep · 14 km away
  15. 2.922 km NE of Ashford, Washington · 15653 days ago · -1 km deep · 70 km away
  16. 1.522 km S of Morton, Washington · 15654 days ago · 10 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10170513. Read Wed, Sep 23, 2026, 6:18 AM UTC.