Washington earthquakes

M1.7 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.7 earthquake struck 38 km NNE of Amboy, Washington on Thu, Dec 20, 1990, 3:04 PM PST (23:04 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.1 8 km N of Bethany, Oregon. 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
1990-12-20 23:04:05 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
46.202° 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, 0.2 km in depth
Magnitude uncertainty
±0.02
Depth from
From location
Station coverage gap
60°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.638 km NNE of Amboy, Washington · 13069 days ago · -1 km deep · 0 km away
  2. 1.538 km NNE of Amboy, Washington · 13068 days ago · 0 km deep · 0 km away
  3. 2.18 km N of Bethany, Oregon · 13061 days ago · 17 km deep · 82 km away
  4. 1.720 km S of Packwood, Washington · 13057 days ago · -1 km deep · 50 km away
  5. 1.538 km NNE of Amboy, Washington · 13057 days ago · 2 km deep · 0 km away
  6. 1.84 km SSE of Walnut Grove, Washington · 13056 days ago · 17 km deep · 71 km away
  7. 1.938 km NNE of Amboy, Washington · 13054 days ago · 2 km deep · 0 km away
  8. 1.738 km NNE of Amboy, Washington · 13048 days ago · -1 km deep · 1 km away
  9. 1.56 km SW of Packwood, Washington · 13037 days ago · 4 km deep · 53 km away
  10. 1.715 km S of Morton, Washington · 13037 days ago · 7 km deep · 24 km away
  11. 1.822 km NNW of Carson, Washington · 13030 days ago · 6 km deep · 38 km away
  12. 1.613 km SE of Rainier, Washington · 13029 days ago · 12 km deep · 72 km away
  13. 1.813 km NNE of Ashford, Washington · 13027 days ago · 7 km deep · 76 km away
  14. 1.511 km ESE of Yacolt, Washington · 13025 days ago · 8 km deep · 43 km away
  15. 1.637 km NNE of Amboy, Washington · 13023 days ago · -1 km deep · 1 km away
  16. 1.85 km SSW of Aloha, Oregon · 13022 days ago · 37 km deep · 100 km away
  17. 1.939 km S of Morton, Washington · 13022 days ago · 1 km deep · 2 km away
  18. 1.737 km NNE of Amboy, Washington · 13021 days ago · -1 km deep · 1 km away
  19. 1.537 km NE of Amboy, Washington · 13013 days ago · -2 km deep · 2 km away
  20. 1.836 km NNE of Amboy, Washington · 13013 days ago · 0 km deep · 2 km away

Before

  1. 1.638 km NNE of Amboy, Washington · 13069 days ago · 0 km deep · 0 km away
  2. 2.136 km NNE of Amboy, Washington · 13069 days ago · 1 km deep · 1 km away
  3. 1.637 km NNE of Amboy, Washington · 13069 days ago · -1 km deep · 0 km away
  4. 2.325 km ENE of Ashford, Washington · 13070 days ago · -2 km deep · 81 km away
  5. 1.64 km SSW of Orting, Washington · 13075 days ago · 1 km deep · 95 km away
  6. 1.925 km ENE of Ashford, Washington · 13078 days ago · -2 km deep · 83 km away
  7. 1.84 km SSE of Mossyrock, Washington · 13084 days ago · 19 km deep · 38 km away
  8. 1.638 km NNE of Amboy, Washington · 13091 days ago · 0 km deep · 1 km away
  9. 1.837 km NNE of Amboy, Washington · 13094 days ago · 0 km deep · 1 km away
  10. 2.38 km NW of Longview Heights, Washington · 13097 days ago · 23 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10270588. Read Thu, Oct 1, 2026, 8:13 PM UTC.