Washington earthquakes

M1.7 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.7 earthquake struck 38 km NNE of Amboy, Washington on Wed, Jul 18, 1990, 5:50 AM PDT (12:50 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.0 23 km ENE of Ashford, Washington. This one was a foreshock.

Amboy 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
1.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-07-18 12:50:10 UTC
Depth
0.0 km (0.0 mi), shallow
Epicenter
46.203° N, 122.192° 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, 0.1 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
54°
Stations used
21

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 8 in the 30 days before it.

After

  1. 1.827 km SSE of Greenwater, Washington · 13219 days ago · 3 km deep · 94 km away
  2. 1.627 km SSE of Greenwater, Washington · 13218 days ago · 3 km deep · 94 km away
  3. 3.023 km ENE of Ashford, Washington · 13214 days ago · -1 km deep · 80 km away
  4. 1.89 km S of Carbonado, Washington · 13209 days ago · 12 km deep · 89 km away
  5. 1.612 km N of Mossyrock, Washington · 13208 days ago · 20 km deep · 54 km away
  6. 2.012 km S of Ashford, Washington · 13207 days ago · 12 km deep · 51 km away
  7. 1.737 km NNE of Amboy, Washington · 13204 days ago · -2 km deep · 1 km away
  8. 2.038 km NNE of Amboy, Washington · 13194 days ago · -2 km deep · 1 km away
  9. 1.537 km NNE of Amboy, Washington · 13185 days ago · 3 km deep · 0 km away
  10. 1.723 km N of Packwood, Washington · 13185 days ago · 3 km deep · 77 km away
  11. 1.538 km NNE of Amboy, Washington · 13181 days ago · 2 km deep · 0 km away
  12. 2.224 km N of Packwood, Washington · 13179 days ago · -1 km deep · 79 km away
  13. 1.537 km NNE of Amboy, Washington · 13179 days ago · 1 km deep · 1 km away
  14. 2.138 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 0 km away
  15. 1.838 km NNE of Amboy, Washington · 13179 days ago · 0 km deep · 0 km away
  16. 1.637 km NNE of Amboy, Washington · 13175 days ago · 0 km deep · 1 km away
  17. 1.537 km NE of Amboy, Washington · 13175 days ago · 14 km deep · 16 km away
  18. 2.337 km NNE of Amboy, Washington · 13172 days ago · -1 km deep · 1 km away
  19. 2.04 km E of Mossyrock, Washington · 13171 days ago · 20 km deep · 40 km away
  20. 1.717 km ENE of Ashford, Washington · 13170 days ago · -1 km deep · 75 km away
  21. 1.524 km ENE of Ashford, Washington · 13170 days ago · -2 km deep · 81 km away
  22. 1.537 km NNE of Amboy, Washington · 13170 days ago · 5 km deep · 1 km away
  23. 2.7Washington · 13165 days ago · 20 km deep · 71 km away

Before

  1. 1.522 km ENE of Ashford, Washington · 13224 days ago · -2 km deep · 79 km away
  2. 1.938 km NNE of Amboy, Washington · 13225 days ago · 0 km deep · 1 km away
  3. 1.738 km NNE of Amboy, Washington · 13235 days ago · -2 km deep · 1 km away
  4. 2.433 km NE of Amboy, Washington · 13242 days ago · 0 km deep · 7 km away
  5. 2.338 km NNE of Amboy, Washington · 13244 days ago · 4 km deep · 1 km away
  6. 1.525 km ENE of Ashford, Washington · 13245 days ago · 0 km deep · 81 km away
  7. 1.810 km SW of Packwood, Washington · 13246 days ago · 8 km deep · 49 km away
  8. 1.937 km NNE of Amboy, Washington · 13246 days ago · 5 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10263723. Read Thu, Oct 1, 2026, 5:13 PM UTC.