Washington earthquakes

M1.9 earthquake 21 km S of Morton, Washington

A magnitude 1.9 earthquake struck 21 km S of Morton, Washington on Mon, Feb 21, 1983, 3:25 AM PST (11:25 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.9 21 km ESE of Castle Rock, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1983-02-21 11:25:15 UTC
Depth
7.2 km (4.5 mi), shallow
Epicenter
46.368° N, 122.248° 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, 0.3 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
47°
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: 60 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 2.11 km W of Crocker, Washington · 15924 days ago · 9 km deep · 80 km away
  2. 1.938 km S of Morton, Washington · 15921 days ago · -1 km deep · 18 km away
  3. 1.638 km NNE of Amboy, Washington · 15920 days ago · -1 km deep · 19 km away
  4. 1.81 km SSE of Castle Rock, Washington · 15919 days ago · 15 km deep · 51 km away
  5. 1.7Washington · 15918 days ago · 17 km deep · 53 km away
  6. 2.136 km S of Morton, Washington · 15918 days ago · -2 km deep · 16 km away
  7. 1.638 km NNE of Amboy, Washington · 15918 days ago · -1 km deep · 19 km away
  8. 1.537 km NNE of Amboy, Washington · 15917 days ago · -1 km deep · 19 km away
  9. 1.636 km NNE of Amboy, Washington · 15917 days ago · -1 km deep · 20 km away
  10. 1.938 km NNE of Amboy, Washington · 15916 days ago · -2 km deep · 18 km away
  11. 1.538 km NNE of Amboy, Washington · 15916 days ago · -2 km deep · 18 km away
  12. 1.539 km NNE of Amboy, Washington · 15916 days ago · -2 km deep · 18 km away
  13. 1.538 km NNE of Amboy, Washington · 15915 days ago · -2 km deep · 19 km away
  14. 1.638 km NNE of Amboy, Washington · 15914 days ago · -2 km deep · 18 km away
  15. 1.538 km NNE of Amboy, Washington · 15913 days ago · -2 km deep · 18 km away
  16. 2.137 km NNE of Amboy, Washington · 15911 days ago · -1 km deep · 20 km away
  17. 2.17 km S of Onalaska, Washington · 15911 days ago · 22 km deep · 40 km away
  18. 1.621 km ESE of Castle Rock, Washington · 15909 days ago · 13 km deep · 33 km away
  19. 2.921 km ESE of Castle Rock, Washington · 15909 days ago · 14 km deep · 33 km away
  20. 1.624 km S of Morton, Washington · 15906 days ago · 4 km deep · 4 km away
  21. 2.78 km S of Onalaska, Washington · 15906 days ago · 23 km deep · 40 km away
  22. 1.522 km S of Morton, Washington · 15903 days ago · 6 km deep · 1 km away
  23. 2.034 km NE of Amboy, Washington · 15901 days ago · 8 km deep · 31 km away
  24. 1.714 km SSE of Carbonado, Washington · 15895 days ago · 5 km deep · 69 km away
  25. 1.97 km S of Onalaska, Washington · 15893 days ago · 24 km deep · 40 km away
  26. 1.538 km NNE of Amboy, Washington · 15892 days ago · -1 km deep · 19 km away
  27. 2.112 km NW of Morton, Washington · 15892 days ago · 9 km deep · 32 km away
  28. 1.921 km ESE of Castle Rock, Washington · 15890 days ago · 13 km deep · 33 km away
  29. 1.537 km NNE of Amboy, Washington · 15889 days ago · -1 km deep · 18 km away
  30. 2.112 km ESE of Skamokawa Valley, Washington · 15886 days ago · 26 km deep · 77 km away
  31. 1.913 km E of Wilkeson, Washington · 15885 days ago · 9 km deep · 85 km away
  32. 1.538 km NNE of Amboy, Washington · 15884 days ago · -2 km deep · 18 km away
  33. 1.538 km NNE of Amboy, Washington · 15884 days ago · -1 km deep · 19 km away
  34. 1.539 km S of Morton, Washington · 15884 days ago · -2 km deep · 18 km away
  35. 1.538 km S of Morton, Washington · 15883 days ago · -2 km deep · 18 km away
  36. 1.539 km NNE of Amboy, Washington · 15883 days ago · -2 km deep · 18 km away
  37. 1.98 km NE of Mossyrock, Washington · 15883 days ago · 15 km deep · 28 km away
  38. 1.638 km NNE of Amboy, Washington · 15882 days ago · -2 km deep · 19 km away
  39. 1.812 km NW of Packwood, Washington · 15881 days ago · 7 km deep · 49 km away
  40. 1.522 km S of Morton, Washington · 15878 days ago · 9 km deep · 1 km away
  41. 2.021 km S of Morton, Washington · 15878 days ago · 7 km deep · 0 km away
  42. 1.638 km NNE of Amboy, Washington · 15878 days ago · 0 km deep · 19 km away
  43. 1.539 km NNE of Amboy, Washington · 15877 days ago · -2 km deep · 19 km away
  44. 1.538 km NNE of Amboy, Washington · 15877 days ago · -2 km deep · 19 km away
  45. 1.538 km NNE of Amboy, Washington · 15876 days ago · 0 km deep · 18 km away
  46. 1.637 km NNE of Amboy, Washington · 15875 days ago · 0 km deep · 19 km away
  47. 1.538 km NNE of Amboy, Washington · 15875 days ago · -2 km deep · 19 km away
  48. 1.538 km NNE of Amboy, Washington · 15875 days ago · -2 km deep · 19 km away
  49. 1.738 km NNE of Amboy, Washington · 15875 days ago · -2 km deep · 18 km away
  50. 1.638 km NNE of Amboy, Washington · 15874 days ago · -2 km deep · 19 km away
  51. 1.538 km NNE of Amboy, Washington · 15873 days ago · -2 km deep · 18 km away
  52. 1.638 km NNE of Amboy, Washington · 15872 days ago · -2 km deep · 18 km away
  53. 1.738 km NNE of Amboy, Washington · 15871 days ago · -2 km deep · 18 km away
  54. 1.538 km NNE of Amboy, Washington · 15871 days ago · 1 km deep · 19 km away
  55. 2.322 km S of Morton, Washington · 15870 days ago · 8 km deep · 1 km away
  56. 2.322 km S of Morton, Washington · 15870 days ago · 8 km deep · 1 km away
  57. 1.738 km NNE of Amboy, Washington · 15869 days ago · -2 km deep · 18 km away
  58. 1.938 km NNE of Amboy, Washington · 15869 days ago · -2 km deep · 19 km away
  59. 1.716 km SSW of Greenwater, Washington · 15869 days ago · -1 km deep · 83 km away
  60. 1.637 km NNE of Amboy, Washington · 15869 days ago · 0 km deep · 20 km away

Before

  1. 1.53 km SSW of Puyallup, Washington · 15933 days ago · 21 km deep · 88 km away
  2. 1.913 km WSW of Greenwater, Washington · 15937 days ago · 14 km deep · 90 km away
  3. 1.67 km W of Mossyrock, Washington · 15938 days ago · 19 km deep · 30 km away
  4. 1.66 km E of West Side Highway, Washington · 15940 days ago · 10 km deep · 50 km away
  5. 2.22 km WSW of Chehalis, Washington · 15944 days ago · 51 km deep · 65 km away
  6. 2.235 km NNE of Amboy, Washington · 15945 days ago · 1 km deep · 21 km away
  7. 1.76 km NNW of Woodland, Washington · 15946 days ago · 16 km deep · 61 km away
  8. 1.738 km NNE of Amboy, Washington · 15946 days ago · -1 km deep · 19 km away
  9. 2.09 km ESE of Carbonado, Washington · 15947 days ago · 2 km deep · 81 km away
  10. 2.837 km NNE of Amboy, Washington · 15947 days ago · 0 km deep · 19 km away
  11. 2.210 km WSW of Mineral, Washington · 15949 days ago · 17 km deep · 34 km away
  12. 1.911 km WSW of Mineral, Washington · 15950 days ago · 17 km deep · 34 km away
  13. 1.711 km WSW of Mineral, Washington · 15950 days ago · 18 km deep · 35 km away
  14. 1.924 km ESE of Packwood, Washington · 15950 days ago · 5 km deep · 69 km away
  15. 2.611 km WNW of Deer Island, Oregon · 15952 days ago · 19 km deep · 72 km away
  16. 1.6Washington-Oregon border region · 15953 days ago · 9 km deep · 80 km away
  17. 3.06 km E of Carbonado, Washington · 15956 days ago · 6 km deep · 81 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10152358. Read Thu, Oct 1, 2026, 2:30 PM UTC.