Washington earthquakes

M1.6 earthquake 27 km SSE of Greenwater, Washington

A magnitude 1.6 earthquake struck 27 km SSE of Greenwater, Washington on Mon, Jul 23, 1990, 11:10 PM PDT (06:10 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.0 23 km ENE of Ashford, 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-07-24 06:10:16 UTC
Depth
2.8 km (1.8 mi), shallow
Epicenter
46.917° N, 121.544° 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 0.0 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
108°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.12 km WSW of Normandy Park, Washington · 13216 days ago · 4 km deep · 85 km away
  2. 1.615 km SSW of Ellensburg, Washington · 13216 days ago · 7 km deep · 72 km away
  3. 3.023 km ENE of Ashford, Washington · 13215 days ago · -1 km deep · 18 km away
  4. 1.715 km ENE of Skykomish, Washington · 13210 days ago · 1 km deep · 96 km away
  5. 1.89 km S of Carbonado, Washington · 13209 days ago · 12 km deep · 40 km away
  6. 1.612 km N of Mossyrock, Washington · 13208 days ago · 20 km deep · 77 km away
  7. 2.012 km S of Ashford, Washington · 13207 days ago · 12 km deep · 49 km away
  8. 1.91 km ESE of Pacific, Washington · 13205 days ago · 10 km deep · 64 km away
  9. 1.737 km NNE of Amboy, Washington · 13205 days ago · -2 km deep · 94 km away
  10. 1.72 km SW of North Bend, Washington · 13200 days ago · -1 km deep · 66 km away
  11. 1.512 km NNE of Naches, Washington · 13199 days ago · 13 km deep · 67 km away
  12. 2.038 km NNE of Amboy, Washington · 13194 days ago · -2 km deep · 93 km away
  13. 1.73 km E of Union Hill-Novelty Hill, Washington · 13193 days ago · 11 km deep · 91 km away
  14. 1.812 km E of Carnation, Washington · 13193 days ago · -1 km deep · 83 km away
  15. 1.61 km S of Normandy Park, Washington · 13188 days ago · 15 km deep · 82 km away
  16. 1.537 km NNE of Amboy, Washington · 13186 days ago · 3 km deep · 94 km away
  17. 1.723 km N of Packwood, Washington · 13186 days ago · 3 km deep · 18 km away
  18. 1.517 km SSW of Skykomish, Washington · 13185 days ago · 95 km deep · 73 km away
  19. 2.02 km SSW of North Bend, Washington · 13182 days ago · -1 km deep · 65 km away
  20. 1.538 km NNE of Amboy, Washington · 13182 days ago · 2 km deep · 94 km away
  21. 1.95 km WSW of Black Diamond, Washington · 13180 days ago · 20 km deep · 57 km away
  22. 2.224 km N of Packwood, Washington · 13179 days ago · -1 km deep · 16 km away
  23. 1.537 km NNE of Amboy, Washington · 13179 days ago · 1 km deep · 94 km away
  24. 2.138 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 94 km away
  25. 1.838 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 94 km away
  26. 1.85 km SSW of Fall City, Washington · 13178 days ago · 14 km deep · 73 km away
  27. 1.637 km NNE of Amboy, Washington · 13176 days ago · 0 km deep · 94 km away
  28. 1.537 km NE of Amboy, Washington · 13175 days ago · 14 km deep · 98 km away
  29. 2.337 km NNE of Amboy, Washington · 13172 days ago · -1 km deep · 94 km away
  30. 2.04 km E of Mossyrock, Washington · 13171 days ago · 20 km deep · 80 km away
  31. 1.717 km ENE of Ashford, Washington · 13170 days ago · -1 km deep · 24 km away
  32. 1.524 km ENE of Ashford, Washington · 13170 days ago · -2 km deep · 16 km away
  33. 1.537 km NNE of Amboy, Washington · 13170 days ago · 5 km deep · 94 km away
  34. 2.7Washington · 13165 days ago · 20 km deep · 26 km away
  35. 2.237 km NNE of Amboy, Washington · 13164 days ago · -2 km deep · 94 km away
  36. 1.525 km ENE of Ashford, Washington · 13162 days ago · -2 km deep · 16 km away
  37. 1.85 km WSW of Snoqualmie, Washington · 13162 days ago · 20 km deep · 72 km away

Before

  1. 1.827 km SSE of Greenwater, Washington · 13219 days ago · 3 km deep · 1 km away
  2. 1.738 km NNE of Amboy, Washington · 13224 days ago · 0 km deep · 94 km away
  3. 1.522 km ENE of Ashford, Washington · 13225 days ago · -2 km deep · 18 km away
  4. 1.938 km NNE of Amboy, Washington · 13226 days ago · 0 km deep · 94 km away
  5. 2.13 km ENE of Bonney Lake, Washington · 13226 days ago · 16 km deep · 54 km away
  6. 1.61 km ESE of Clyde Hill, Washington · 13227 days ago · 23 km deep · 94 km away
  7. 2.13 km NW of Maple Valley, Washington · 13228 days ago · 4 km deep · 69 km away
  8. 1.91 km NNE of Yarrow Point, Washington · 13231 days ago · 0 km deep · 97 km away
  9. 1.738 km NNE of Amboy, Washington · 13236 days ago · -2 km deep · 94 km away
  10. 1.68 km S of Leavenworth, Washington · 13240 days ago · 0 km deep · 96 km away
  11. 2.433 km NE of Amboy, Washington · 13242 days ago · 0 km deep · 99 km away
  12. 2.338 km NNE of Amboy, Washington · 13244 days ago · 4 km deep · 94 km away
  13. 1.525 km ENE of Ashford, Washington · 13245 days ago · 0 km deep · 16 km away
  14. 1.810 km SW of Packwood, Washington · 13246 days ago · 8 km deep · 45 km away
  15. 1.937 km NNE of Amboy, Washington · 13247 days ago · 5 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10264713. Read Thu, Oct 1, 2026, 11:02 PM UTC.