Washington earthquakes

M1.7 earthquake 6 km SSW of Morton, Washington

A magnitude 1.7 earthquake struck 6 km SSW of Morton, Washington on Mon, Jul 15, 1985, 3:30 PM PDT (22:30 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M1.9 38 km NNE of Amboy, Washington. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1985-07-15 22:30:15 UTC
Depth
18.1 km (11.2 mi), shallow
Epicenter
46.510° N, 122.312° 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, 0.5 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
61°
Stations used
25

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.938 km NNE of Amboy, Washington · 15041 days ago · -1 km deep · 35 km away
  2. 2.036 km WNW of Trout Lake, Washington · 15040 days ago · 2 km deep · 52 km away
  3. 1.722 km S of Greenwater, Washington · 15033 days ago · 19 km deep · 72 km away
  4. 2.126 km S of Morton, Washington · 15033 days ago · 8 km deep · 21 km away
  5. 1.931 km S of Morton, Washington · 15030 days ago · 3 km deep · 27 km away
  6. 1.738 km NNE of Amboy, Washington · 15030 days ago · -2 km deep · 35 km away
  7. 1.96 km S of Ashford, Washington · 15030 days ago · 8 km deep · 31 km away
  8. 2.25 km ESE of Kalama, Washington · 15028 days ago · 18 km deep · 67 km away
  9. 1.97 km SSE of Carbonado, Washington · 15027 days ago · 15 km deep · 61 km away
  10. 2.013 km E of Wilkeson, Washington · 15025 days ago · 10 km deep · 72 km away
  11. 1.67 km NE of Ashford, Washington · 15023 days ago · 10 km deep · 42 km away
  12. 1.515 km E of Greenwater, Washington · 15022 days ago · -1 km deep · 97 km away
  13. 1.6Puget Sound region, Washington · 15020 days ago · 0 km deep · 58 km away
  14. 1.85 km SW of Lebam, Washington · 15019 days ago · 7 km deep · 98 km away
  15. 2.05 km SE of Pe Ell, Washington · 15019 days ago · -1 km deep · 71 km away
  16. 2.414 km SSE of Ashford, Washington · 15019 days ago · 8 km deep · 32 km away
  17. 1.58 km SSE of Greenwater, Washington · 15016 days ago · 0 km deep · 85 km away
  18. 1.72 km SSE of Crocker, Washington · 15014 days ago · 0 km deep · 64 km away
  19. 1.612 km ESE of Enumclaw, Washington · 15009 days ago · 1 km deep · 80 km away
  20. 1.738 km S of Morton, Washington · 15007 days ago · -2 km deep · 34 km away
  21. 1.538 km NNE of Amboy, Washington · 15006 days ago · -2 km deep · 35 km away
  22. 1.538 km NNE of Amboy, Washington · 15005 days ago · -2 km deep · 35 km away
  23. 1.715 km ENE of Packwood, Washington · 15004 days ago · 5 km deep · 65 km away
  24. 1.538 km NNE of Amboy, Washington · 14998 days ago · -2 km deep · 35 km away
  25. 1.813 km ESE of Ashford, Washington · 14993 days ago · -1 km deep · 42 km away
  26. 2.5Washington · 14992 days ago · 6 km deep · 22 km away
  27. 2.21 km NE of Brush Prairie, Washington · 14991 days ago · 15 km deep · 87 km away
  28. 2.52 km SW of Des Moines, Washington · 14988 days ago · 14 km deep · 98 km away
  29. 1.52 km SW of Des Moines, Washington · 14988 days ago · 15 km deep · 98 km away
  30. 1.829 km S of Morton, Washington · 14987 days ago · 10 km deep · 25 km away
  31. 2.37 km SSE of Carbonado, Washington · 14986 days ago · 14 km deep · 61 km away
  32. 1.812 km W of Greenwater, Washington · 14985 days ago · 14 km deep · 82 km away

Before

  1. 1.829 km NW of Trout Lake, Washington · 15054 days ago · -1 km deep · 54 km away
  2. 1.76 km ENE of Enumclaw, Washington · 15057 days ago · 4 km deep · 85 km away
  3. 2.123 km ENE of Ashford, Washington · 15058 days ago · -1 km deep · 57 km away
  4. 2.122 km ENE of Ashford, Washington · 15058 days ago · 0 km deep · 57 km away
  5. 2.07 km SW of Prescott, Oregon · 15060 days ago · 19 km deep · 75 km away
  6. 2.038 km NNE of Amboy, Washington · 15061 days ago · -1 km deep · 35 km away
  7. 1.61 km E of Pe Ell, Washington · 15063 days ago · 31 km deep · 74 km away
  8. 1.86 km SSW of Morton, Washington · 15069 days ago · 19 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10193198. Read Wed, Sep 23, 2026, 2:37 AM UTC.