Washington earthquakes

M1.8 earthquake 24 km S of Morton, Washington

A magnitude 1.8 earthquake struck 24 km S of Morton, Washington on Sat, Mar 28, 1981, 7:16 PM PST (03:16 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M2.7 35 km SSE of Morton, 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
1981-03-29 03:16:27 UTC
Depth
11.3 km (7.0 mi), shallow
Epicenter
46.336° N, 122.247° 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, 0.8 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
36°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 71 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 2.735 km SSE of Morton, Washington · 16613 days ago · -1 km deep · 11 km away
  2. 1.537 km SSE of Morton, Washington · 16611 days ago · -1 km deep · 13 km away
  3. 1.637 km S of Morton, Washington · 16605 days ago · 1 km deep · 13 km away
  4. 2.237 km NNE of Amboy, Washington · 16605 days ago · -2 km deep · 16 km away
  5. 1.9Washington · 16604 days ago · 1 km deep · 16 km away
  6. 2.438 km NNE of Amboy, Washington · 16602 days ago · 0 km deep · 15 km away
  7. 1.638 km NNE of Amboy, Washington · 16602 days ago · -1 km deep · 15 km away
  8. 1.922 km S of Morton, Washington · 16602 days ago · 10 km deep · 2 km away
  9. 2.122 km S of Morton, Washington · 16602 days ago · 11 km deep · 3 km away
  10. 1.637 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 16 km away
  11. 2.039 km S of Morton, Washington · 16601 days ago · -1 km deep · 15 km away
  12. 1.737 km NE of Amboy, Washington · 16601 days ago · -1 km deep · 18 km away
  13. 1.738 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 15 km away
  14. 1.938 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 16 km away
  15. 1.938 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 16 km away
  16. 1.837 km NNE of Amboy, Washington · 16601 days ago · 0 km deep · 16 km away
  17. 1.737 km NNE of Amboy, Washington · 16601 days ago · 0 km deep · 17 km away
  18. 1.836 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 17 km away
  19. 2.038 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 15 km away
  20. 2.037 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 16 km away
  21. 1.638 km S of Morton, Washington · 16601 days ago · 0 km deep · 14 km away
  22. 2.338 km S of Morton, Washington · 16601 days ago · -1 km deep · 14 km away
  23. 2.038 km NNE of Amboy, Washington · 16601 days ago · 1 km deep · 16 km away
  24. 1.537 km NNE of Amboy, Washington · 16601 days ago · 2 km deep · 15 km away
  25. 1.837 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 16 km away
  26. 1.736 km NNE of Amboy, Washington · 16601 days ago · 1 km deep · 16 km away
  27. 1.737 km NNE of Amboy, Washington · 16601 days ago · 0 km deep · 15 km away
  28. 1.936 km NNE of Amboy, Washington · 16601 days ago · 0 km deep · 17 km away
  29. 2.538 km NNE of Amboy, Washington · 16601 days ago · -1 km deep · 16 km away
  30. 1.537 km SSE of Morton, Washington · 16601 days ago · -1 km deep · 14 km away
  31. 1.634 km NNE of Amboy, Washington · 16600 days ago · -1 km deep · 18 km away
  32. 1.938 km NNE of Amboy, Washington · 16600 days ago · 0 km deep · 15 km away
  33. 1.636 km NNE of Amboy, Washington · 16600 days ago · -1 km deep · 17 km away
  34. 2.039 km NNE of Amboy, Washington · 16600 days ago · -1 km deep · 15 km away
  35. 1.637 km NNE of Amboy, Washington · 16600 days ago · -1 km deep · 16 km away
  36. 2.322 km S of Morton, Washington · 16600 days ago · 9 km deep · 2 km away
  37. 1.937 km NNE of Amboy, Washington · 16598 days ago · 0 km deep · 16 km away
  38. 2.423 km S of Morton, Washington · 16597 days ago · 8 km deep · 1 km away
  39. 1.731 km S of Morton, Washington · 16597 days ago · 2 km deep · 7 km away
  40. 1.734 km S of Morton, Washington · 16597 days ago · -1 km deep · 10 km away
  41. 1.831 km S of Morton, Washington · 16597 days ago · 3 km deep · 7 km away
  42. 2.123 km S of Morton, Washington · 16593 days ago · 11 km deep · 2 km away
  43. 2.021 km S of Morton, Washington · 16593 days ago · 10 km deep · 3 km away
  44. 1.712 km SSW of Trout Lake, Washington · 16591 days ago · -1 km deep · 72 km away
  45. 1.530 km NNE of Amboy, Washington · 16590 days ago · 11 km deep · 19 km away
  46. 1.717 km E of Packwood, Washington · 16590 days ago · 6 km deep · 69 km away
  47. 1.9Washington-Oregon border region · 16588 days ago · 6 km deep · 69 km away
  48. 1.83 km N of Mount Hood, Oregon · 16582 days ago · 4 km deep · 100 km away
  49. 2.621 km S of Morton, Washington · 16581 days ago · 10 km deep · 3 km away
  50. 2.023 km S of Morton, Washington · 16581 days ago · 8 km deep · 1 km away
  51. 3.121 km S of Morton, Washington · 16580 days ago · 10 km deep · 3 km away
  52. 1.638 km NNE of Amboy, Washington · 16580 days ago · -1 km deep · 15 km away
  53. 2.023 km S of Morton, Washington · 16580 days ago · 9 km deep · 2 km away
  54. 1.824 km S of Morton, Washington · 16579 days ago · 8 km deep · 1 km away
  55. 2.122 km ESE of Packwood, Washington · 16577 days ago · 11 km deep · 69 km away
  56. 2.137 km SSE of Morton, Washington · 16577 days ago · 10 km deep · 18 km away
  57. 1.712 km ESE of Carbonado, Washington · 16577 days ago · 16 km deep · 83 km away
  58. 1.734 km NE of Amboy, Washington · 16576 days ago · 5 km deep · 26 km away
  59. 1.924 km S of Morton, Washington · 16570 days ago · 11 km deep · 1 km away
  60. 1.537 km SSE of Morton, Washington · 16569 days ago · 10 km deep · 17 km away

The first 60 of 71.

Before

  1. 1.825 km S of Morton, Washington · 16614 days ago · 7 km deep · 1 km away
  2. 1.734 km NNE of Amboy, Washington · 16615 days ago · 1 km deep · 18 km away
  3. 1.838 km NE of Amboy, Washington · 16621 days ago · 7 km deep · 23 km away
  4. 2.122 km S of Morton, Washington · 16622 days ago · 11 km deep · 3 km away
  5. 2.026 km S of Morton, Washington · 16625 days ago · 13 km deep · 2 km away
  6. 2.022 km S of Morton, Washington · 16630 days ago · 10 km deep · 2 km away
  7. 2.220 km S of Morton, Washington · 16630 days ago · 6 km deep · 5 km away
  8. 2.121 km S of Morton, Washington · 16633 days ago · 8 km deep · 3 km away
  9. 1.921 km S of Morton, Washington · 16636 days ago · 8 km deep · 3 km away
  10. 1.523 km S of Morton, Washington · 16637 days ago · 8 km deep · 1 km away
  11. 1.721 km S of Morton, Washington · 16638 days ago · 8 km deep · 3 km away
  12. 1.624 km S of Morton, Washington · 16639 days ago · 7 km deep · 1 km away
  13. 1.822 km S of Morton, Washington · 16639 days ago · 11 km deep · 2 km away
  14. 2.123 km S of Morton, Washington · 16640 days ago · 6 km deep · 1 km away
  15. 1.823 km S of Morton, Washington · 16640 days ago · 7 km deep · 1 km away
  16. 1.521 km S of Morton, Washington · 16641 days ago · 10 km deep · 4 km away
  17. 1.823 km S of Morton, Washington · 16642 days ago · 6 km deep · 2 km away
  18. 2.523 km S of Morton, Washington · 16642 days ago · 6 km deep · 2 km away
  19. 1.722 km S of Morton, Washington · 16643 days ago · 8 km deep · 2 km away
  20. 2.123 km S of Morton, Washington · 16643 days ago · 6 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10108803. Read Tue, Sep 22, 2026, 2:15 PM UTC.