Washington earthquakes

M1.6 earthquake 12 km N of Mossyrock, Washington

A magnitude 1.6 earthquake struck 12 km N of Mossyrock, Washington on Fri, Aug 3, 1990, 7:36 AM PDT (14:36 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M3.0 3 km S of Shelton, Washington. This one was a foreshock.

Mossyrock 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-08-03 14:36:40 UTC
Depth
20.2 km (12.6 mi), shallow
Epicenter
46.645° N, 122.468° 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, 0.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
51°
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: 34 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.012 km S of Ashford, Washington · 13208 days ago · 12 km deep · 32 km away
  2. 1.91 km ESE of Pacific, Washington · 13206 days ago · 10 km deep · 71 km away
  3. 1.737 km NNE of Amboy, Washington · 13205 days ago · -2 km deep · 55 km away
  4. 2.038 km NNE of Amboy, Washington · 13194 days ago · -2 km deep · 54 km away
  5. 1.61 km S of Normandy Park, Washington · 13189 days ago · 15 km deep · 87 km away
  6. 1.537 km NNE of Amboy, Washington · 13186 days ago · 3 km deep · 54 km away
  7. 1.723 km N of Packwood, Washington · 13186 days ago · 3 km deep · 60 km away
  8. 1.538 km NNE of Amboy, Washington · 13182 days ago · 2 km deep · 54 km away
  9. 1.95 km WSW of Black Diamond, Washington · 13181 days ago · 20 km deep · 77 km away
  10. 1.64 km SSE of Bethel, Washington · 13180 days ago · 8 km deep · 91 km away
  11. 2.224 km N of Packwood, Washington · 13180 days ago · -1 km deep · 61 km away
  12. 1.537 km NNE of Amboy, Washington · 13179 days ago · 1 km deep · 54 km away
  13. 2.138 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 54 km away
  14. 1.838 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 54 km away
  15. 2.47 km WNW of Allyn, Washington · 13179 days ago · 13 km deep · 92 km away
  16. 2.54 km W of Burley, Washington · 13178 days ago · 22 km deep · 87 km away
  17. 1.637 km NNE of Amboy, Washington · 13176 days ago · 0 km deep · 54 km away
  18. 1.537 km NE of Amboy, Washington · 13176 days ago · 14 km deep · 69 km away
  19. 2.337 km NNE of Amboy, Washington · 13173 days ago · -1 km deep · 55 km away
  20. 2.04 km E of Mossyrock, Washington · 13172 days ago · 20 km deep · 14 km away
  21. 1.717 km ENE of Ashford, Washington · 13171 days ago · -1 km deep · 53 km away
  22. 1.524 km ENE of Ashford, Washington · 13171 days ago · -2 km deep · 60 km away
  23. 1.537 km NNE of Amboy, Washington · 13170 days ago · 5 km deep · 55 km away
  24. 3.03 km S of Shelton, Washington · 13170 days ago · 17 km deep · 77 km away
  25. 2.7Washington · 13166 days ago · 20 km deep · 52 km away
  26. 2.237 km NNE of Amboy, Washington · 13164 days ago · -2 km deep · 54 km away
  27. 1.99 km ENE of Hoodsport, Washington · 13164 days ago · 7 km deep · 99 km away
  28. 1.525 km ENE of Ashford, Washington · 13162 days ago · -2 km deep · 60 km away
  29. 1.614 km NNW of Amboy, Washington · 13159 days ago · 19 km deep · 68 km away
  30. 2.638 km NNE of Amboy, Washington · 13156 days ago · 0 km deep · 54 km away
  31. 1.638 km NE of Amboy, Washington · 13156 days ago · -1 km deep · 55 km away
  32. 2.93 km ENE of Kelso, Washington · 13152 days ago · 22 km deep · 62 km away
  33. 2.63 km ENE of Kelso, Washington · 13152 days ago · 21 km deep · 61 km away
  34. 1.65 km ESE of West Side Highway, Washington · 13151 days ago · 19 km deep · 60 km away

Before

  1. 1.89 km S of Carbonado, Washington · 13210 days ago · 12 km deep · 50 km away
  2. 2.34 km N of Vaughn, Washington · 13213 days ago · 22 km deep · 85 km away
  3. 3.023 km ENE of Ashford, Washington · 13215 days ago · -1 km deep · 59 km away
  4. 2.12 km WSW of Normandy Park, Washington · 13217 days ago · 4 km deep · 88 km away
  5. 1.627 km SSE of Greenwater, Washington · 13219 days ago · 3 km deep · 77 km away
  6. 1.827 km SSE of Greenwater, Washington · 13219 days ago · 3 km deep · 76 km away
  7. 1.738 km NNE of Amboy, Washington · 13225 days ago · 0 km deep · 54 km away
  8. 1.522 km ENE of Ashford, Washington · 13225 days ago · -2 km deep · 58 km away
  9. 1.938 km NNE of Amboy, Washington · 13226 days ago · 0 km deep · 54 km away
  10. 2.13 km ENE of Bonney Lake, Washington · 13227 days ago · 16 km deep · 65 km away
  11. 2.13 km NW of Maple Valley, Washington · 13229 days ago · 4 km deep · 90 km away
  12. 1.738 km NNE of Amboy, Washington · 13236 days ago · -2 km deep · 54 km away
  13. 1.64 km W of Burley, Washington · 13239 days ago · 22 km deep · 88 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10260758. Read Fri, Oct 2, 2026, 7:47 AM UTC.