Washington earthquakes

M1.5 earthquake 25 km ENE of Ashford, Washington

A magnitude 1.5 earthquake struck 25 km ENE of Ashford, Washington on Tue, Sep 18, 1990, 3:01 PM PDT (22:01 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.6 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-09-18 22:01:22 UTC
Depth
-1.7 km (-1.0 mi), shallow
Epicenter
46.874° N, 121.749° 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, 0.6 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
169°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 1.85 km WSW of Snoqualmie, Washington · 13163 days ago · 20 km deep · 72 km away
  2. 1.84 km WNW of Cliffdell, Washington · 13160 days ago · -1 km deep · 48 km away
  3. 2.638 km NNE of Amboy, Washington · 13157 days ago · 0 km deep · 82 km away
  4. 1.638 km NE of Amboy, Washington · 13157 days ago · -1 km deep · 82 km away
  5. 1.60 km ENE of Mercer Island, Washington · 13155 days ago · 20 km deep · 85 km away
  6. 2.019 km S of Morton, Washington · 13149 days ago · 19 km deep · 67 km away
  7. 1.51 km E of Clyde Hill, Washington · 13148 days ago · 24 km deep · 91 km away
  8. 1.83 km SW of Snoqualmie, Washington · 13141 days ago · 19 km deep · 70 km away
  9. 2.027 km ENE of Ashford, Washington · 13140 days ago · -2 km deep · 3 km away
  10. 1.55 km NW of Federal Way, Washington · 13134 days ago · 18 km deep · 71 km away
  11. 1.724 km SE of Carbonado, Washington · 13126 days ago · -1 km deep · 9 km away
  12. 1.736 km NNE of Amboy, Washington · 13126 days ago · -2 km deep · 84 km away
  13. 1.738 km NNE of Amboy, Washington · 13126 days ago · -2 km deep · 81 km away
  14. 2.315 km ESE of Kapowsin, Washington · 13122 days ago · 6 km deep · 24 km away
  15. 1.615 km ESE of Kapowsin, Washington · 13122 days ago · 6 km deep · 24 km away
  16. 1.52 km NNE of Maple Heights-Lake Desire, Washington · 13121 days ago · 17 km deep · 70 km away
  17. 1.926 km ENE of Ashford, Washington · 13119 days ago · -2 km deep · 2 km away
  18. 2.036 km S of Morton, Washington · 13115 days ago · 0 km deep · 78 km away
  19. 2.53 km SE of Grapeview, Washington · 13111 days ago · 18 km deep · 94 km away
  20. 1.923 km S of Morton, Washington · 13111 days ago · 7 km deep · 70 km away
  21. 1.723 km ENE of Ashford, Washington · 13107 days ago · -2 km deep · 1 km away
  22. 1.838 km NNE of Amboy, Washington · 13106 days ago · -2 km deep · 82 km away

Before

  1. 2.237 km NNE of Amboy, Washington · 13165 days ago · -2 km deep · 83 km away
  2. 2.7Washington · 13167 days ago · 20 km deep · 12 km away
  3. 1.70 km ESE of Cottage Lake, Washington · 13168 days ago · 12 km deep · 100 km away
  4. 1.537 km NNE of Amboy, Washington · 13171 days ago · 5 km deep · 83 km away
  5. 1.524 km ENE of Ashford, Washington · 13172 days ago · -2 km deep · 1 km away
  6. 1.717 km ENE of Ashford, Washington · 13172 days ago · -1 km deep · 8 km away
  7. 2.04 km E of Mossyrock, Washington · 13173 days ago · 20 km deep · 64 km away
  8. 2.337 km NNE of Amboy, Washington · 13174 days ago · -1 km deep · 83 km away
  9. 1.537 km NE of Amboy, Washington · 13177 days ago · 14 km deep · 89 km away
  10. 1.637 km NNE of Amboy, Washington · 13177 days ago · 0 km deep · 82 km away
  11. 1.85 km SSW of Fall City, Washington · 13179 days ago · 14 km deep · 73 km away
  12. 2.54 km W of Burley, Washington · 13179 days ago · 22 km deep · 93 km away
  13. 1.838 km NNE of Amboy, Washington · 13180 days ago · 0 km deep · 82 km away
  14. 2.138 km NNE of Amboy, Washington · 13180 days ago · 0 km deep · 82 km away
  15. 1.537 km NNE of Amboy, Washington · 13180 days ago · 1 km deep · 83 km away
  16. 2.224 km N of Packwood, Washington · 13181 days ago · -1 km deep · 6 km away
  17. 1.64 km SSE of Bethel, Washington · 13181 days ago · 8 km deep · 92 km away
  18. 1.95 km WSW of Black Diamond, Washington · 13182 days ago · 20 km deep · 52 km away
  19. 1.538 km NNE of Amboy, Washington · 13183 days ago · 2 km deep · 82 km away
  20. 2.02 km SSW of North Bend, Washington · 13184 days ago · -1 km deep · 67 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10264393. Read Sat, Oct 3, 2026, 5:45 AM UTC.