Washington earthquakes

M1.8 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.8 earthquake struck 38 km NNE of Amboy, Washington on Sat, Sep 1, 1990, 2:52 PM PDT (21:52 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.9 3 km ENE of Kelso, 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
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-09-01 21:52:01 UTC
Depth
0.3 km (0.2 mi), shallow
Epicenter
46.201° N, 122.188° 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 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
90°
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: 24 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.637 km NNE of Amboy, Washington · 13177 days ago · 0 km deep · 1 km away
  2. 1.537 km NE of Amboy, Washington · 13177 days ago · 14 km deep · 16 km away
  3. 2.337 km NNE of Amboy, Washington · 13174 days ago · -1 km deep · 1 km away
  4. 2.04 km E of Mossyrock, Washington · 13173 days ago · 20 km deep · 40 km away
  5. 1.717 km ENE of Ashford, Washington · 13172 days ago · -1 km deep · 75 km away
  6. 1.524 km ENE of Ashford, Washington · 13172 days ago · -2 km deep · 81 km away
  7. 1.537 km NNE of Amboy, Washington · 13172 days ago · 5 km deep · 1 km away
  8. 2.7Washington · 13167 days ago · 20 km deep · 71 km away
  9. 2.237 km NNE of Amboy, Washington · 13166 days ago · -2 km deep · 1 km away
  10. 1.525 km ENE of Ashford, Washington · 13164 days ago · -2 km deep · 82 km away
  11. 1.614 km NNW of Amboy, Washington · 13161 days ago · 19 km deep · 32 km away
  12. 2.638 km NNE of Amboy, Washington · 13158 days ago · 0 km deep · 0 km away
  13. 1.638 km NE of Amboy, Washington · 13158 days ago · -1 km deep · 2 km away
  14. 2.93 km ENE of Kelso, Washington · 13154 days ago · 22 km deep · 52 km away
  15. 2.63 km ENE of Kelso, Washington · 13154 days ago · 21 km deep · 52 km away
  16. 1.65 km ESE of West Side Highway, Washington · 13152 days ago · 19 km deep · 51 km away
  17. 2.15 km NW of Mount Hood, Oregon · 13150 days ago · 5 km deep · 82 km away
  18. 2.019 km S of Morton, Washington · 13150 days ago · 19 km deep · 21 km away
  19. 2.027 km ENE of Ashford, Washington · 13141 days ago · -2 km deep · 84 km away
  20. 1.724 km SE of Carbonado, Washington · 13127 days ago · -1 km deep · 88 km away
  21. 1.736 km NNE of Amboy, Washington · 13126 days ago · -2 km deep · 2 km away
  22. 1.738 km NNE of Amboy, Washington · 13126 days ago · -2 km deep · 1 km away
  23. 2.315 km ESE of Kapowsin, Washington · 13123 days ago · 6 km deep · 80 km away
  24. 1.615 km ESE of Kapowsin, Washington · 13123 days ago · 6 km deep · 80 km away

Before

  1. 2.138 km NNE of Amboy, Washington · 13181 days ago · 0 km deep · 0 km away
  2. 1.537 km NNE of Amboy, Washington · 13181 days ago · 1 km deep · 1 km away
  3. 2.224 km N of Packwood, Washington · 13181 days ago · -1 km deep · 79 km away
  4. 1.538 km NNE of Amboy, Washington · 13184 days ago · 2 km deep · 0 km away
  5. 1.723 km N of Packwood, Washington · 13187 days ago · 3 km deep · 77 km away
  6. 1.537 km NNE of Amboy, Washington · 13188 days ago · 3 km deep · 0 km away
  7. 2.038 km NNE of Amboy, Washington · 13196 days ago · -2 km deep · 1 km away
  8. 1.737 km NNE of Amboy, Washington · 13207 days ago · -2 km deep · 1 km away
  9. 2.012 km S of Ashford, Washington · 13209 days ago · 12 km deep · 51 km away
  10. 1.612 km N of Mossyrock, Washington · 13210 days ago · 20 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10260058. Read Sat, Oct 3, 2026, 7:53 PM UTC.