Washington earthquakes

M1.9 earthquake 31 km S of Morton, Washington

A magnitude 1.9 earthquake struck 31 km S of Morton, Washington on Mon, Jul 29, 1985, 12:41 PM PDT (19:41 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.5 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
1.9 (md), micro
Local time
UTC
1985-07-29 19:41:28 UTC
Depth
3.0 km (1.9 mi), shallow
Epicenter
46.279° N, 122.219° 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 1.8 km horizontally, 3.0 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
133°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.738 km NNE of Amboy, Washington · 15034 days ago · -2 km deep · 9 km away
  2. 1.96 km S of Ashford, Washington · 15034 days ago · 8 km deep · 49 km away
  3. 2.25 km ESE of Kalama, Washington · 15032 days ago · 18 km deep · 53 km away
  4. 1.97 km SSE of Carbonado, Washington · 15031 days ago · 15 km deep · 84 km away
  5. 2.013 km E of Wilkeson, Washington · 15029 days ago · 10 km deep · 94 km away
  6. 1.67 km NE of Ashford, Washington · 15027 days ago · 10 km deep · 62 km away
  7. 1.6Puget Sound region, Washington · 15024 days ago · 0 km deep · 82 km away
  8. 2.05 km SE of Pe Ell, Washington · 15023 days ago · -1 km deep · 84 km away
  9. 2.414 km SSE of Ashford, Washington · 15023 days ago · 8 km deep · 46 km away
  10. 1.72 km SSE of Crocker, Washington · 15018 days ago · 0 km deep · 88 km away
  11. 1.738 km S of Morton, Washington · 15011 days ago · -2 km deep · 7 km away
  12. 1.538 km NNE of Amboy, Washington · 15010 days ago · -2 km deep · 8 km away
  13. 1.538 km NNE of Amboy, Washington · 15009 days ago · -2 km deep · 8 km away
  14. 1.715 km ENE of Packwood, Washington · 15008 days ago · 5 km deep · 71 km away
  15. 1.538 km NNE of Amboy, Washington · 15002 days ago · -2 km deep · 8 km away
  16. 1.813 km ESE of Ashford, Washington · 14997 days ago · -1 km deep · 57 km away
  17. 2.5Washington · 14996 days ago · 6 km deep · 5 km away
  18. 2.21 km NE of Brush Prairie, Washington · 14995 days ago · 15 km deep · 64 km away
  19. 1.829 km S of Morton, Washington · 14991 days ago · 10 km deep · 2 km away
  20. 2.37 km SSE of Carbonado, Washington · 14990 days ago · 14 km deep · 84 km away
  21. 1.639 km NNE of Amboy, Washington · 14987 days ago · -2 km deep · 8 km away
  22. 1.92 km NNE of Packwood, Washington · 14980 days ago · 3 km deep · 58 km away
  23. 1.637 km NNE of Amboy, Washington · 14975 days ago · -1 km deep · 9 km away

Before

  1. 2.126 km S of Morton, Washington · 15037 days ago · 8 km deep · 5 km away
  2. 1.722 km S of Greenwater, Washington · 15037 days ago · 19 km deep · 88 km away
  3. 2.036 km WNW of Trout Lake, Washington · 15044 days ago · 2 km deep · 27 km away
  4. 1.938 km NNE of Amboy, Washington · 15045 days ago · -1 km deep · 9 km away
  5. 3.230 km SW of White Swan, Washington · 15047 days ago · -1 km deep · 94 km away
  6. 1.76 km SSW of Morton, Washington · 15048 days ago · 18 km deep · 27 km away
  7. 1.829 km NW of Trout Lake, Washington · 15058 days ago · -1 km deep · 36 km away
  8. 2.123 km ENE of Ashford, Washington · 15062 days ago · -1 km deep · 73 km away
  9. 2.122 km ENE of Ashford, Washington · 15063 days ago · 0 km deep · 73 km away
  10. 2.07 km SW of Prescott, Oregon · 15064 days ago · 19 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10195418. Read Sun, Sep 27, 2026, 3:22 AM UTC.