Washington earthquakes

M1.7 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.7 earthquake struck 38 km NNE of Amboy, Washington on Fri, Oct 26, 1990, 3:37 AM PDT (10:37 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.3 15 km ESE of Kapowsin, 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
1990-10-26 10:37:55 UTC
Depth
-1.6 km (-1.0 mi), shallow
Epicenter
46.209° 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 0.2 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
121°
Stations used
9

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 8 in the 30 days before it.

After

  1. 2.315 km ESE of Kapowsin, Washington · 13122 days ago · 6 km deep · 79 km away
  2. 1.615 km ESE of Kapowsin, Washington · 13121 days ago · 6 km deep · 79 km away
  3. 1.926 km ENE of Ashford, Washington · 13118 days ago · -2 km deep · 83 km away
  4. 2.036 km S of Morton, Washington · 13114 days ago · 0 km deep · 3 km away
  5. 1.923 km S of Morton, Washington · 13110 days ago · 7 km deep · 16 km away
  6. 1.621 km E of Kelso, Washington · 13109 days ago · 13 km deep · 35 km away
  7. 1.55 km SW of Pe Ell, Washington · 13108 days ago · 25 km deep · 96 km away
  8. 1.723 km ENE of Ashford, Washington · 13106 days ago · -2 km deep · 80 km away
  9. 1.838 km NNE of Amboy, Washington · 13105 days ago · -2 km deep · 1 km away
  10. 2.38 km NW of Longview Heights, Washington · 13098 days ago · 23 km deep · 64 km away
  11. 1.837 km NNE of Amboy, Washington · 13095 days ago · 0 km deep · 1 km away
  12. 1.638 km NNE of Amboy, Washington · 13091 days ago · 0 km deep · 1 km away
  13. 1.84 km SSE of Mossyrock, Washington · 13084 days ago · 19 km deep · 38 km away
  14. 1.925 km ENE of Ashford, Washington · 13079 days ago · -2 km deep · 82 km away
  15. 1.64 km SSW of Orting, Washington · 13076 days ago · 1 km deep · 94 km away
  16. 2.325 km ENE of Ashford, Washington · 13071 days ago · -2 km deep · 80 km away
  17. 1.637 km NNE of Amboy, Washington · 13070 days ago · -1 km deep · 1 km away
  18. 2.136 km NNE of Amboy, Washington · 13070 days ago · 1 km deep · 2 km away
  19. 1.638 km NNE of Amboy, Washington · 13070 days ago · 0 km deep · 1 km away
  20. 1.738 km NNE of Amboy, Washington · 13070 days ago · 0 km deep · 1 km away
  21. 1.638 km NNE of Amboy, Washington · 13069 days ago · -1 km deep · 0 km away
  22. 1.538 km NNE of Amboy, Washington · 13069 days ago · 0 km deep · 1 km away

Before

  1. 1.736 km NNE of Amboy, Washington · 13125 days ago · -2 km deep · 3 km away
  2. 1.724 km SE of Carbonado, Washington · 13126 days ago · -1 km deep · 87 km away
  3. 2.027 km ENE of Ashford, Washington · 13139 days ago · -2 km deep · 84 km away
  4. 2.019 km S of Morton, Washington · 13148 days ago · 19 km deep · 21 km away
  5. 2.15 km NW of Mount Hood, Oregon · 13149 days ago · 5 km deep · 83 km away
  6. 1.65 km ESE of West Side Highway, Washington · 13151 days ago · 19 km deep · 51 km away
  7. 2.63 km ENE of Kelso, Washington · 13152 days ago · 21 km deep · 52 km away
  8. 2.93 km ENE of Kelso, Washington · 13152 days ago · 22 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10270933. Read Fri, Oct 2, 2026, 11:24 AM UTC.