Washington earthquakes

M2.2 earthquake 38 km NNE of Amboy, Washington

A magnitude 2.2 earthquake struck 38 km NNE of Amboy, Washington on Sat, Dec 21, 1985, 5:31 PM PST (01:31 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.1 24 km S of Morton, 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
2.2 (md), micro
Local time
UTC
1985-12-22 01:31:49 UTC
Depth
-1.4 km (-0.9 mi), shallow
Epicenter
46.202° N, 122.189° 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 0.5 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
55°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.66 km NE of Amboy, Washington · 14884 days ago · 16 km deep · 32 km away
  2. 1.725 km E of Castle Rock, Washington · 14881 days ago · 17 km deep · 30 km away
  3. 3.124 km S of Morton, Washington · 14880 days ago · 6 km deep · 16 km away
  4. 2.424 km S of Morton, Washington · 14880 days ago · 6 km deep · 16 km away
  5. 1.524 km S of Morton, Washington · 14880 days ago · 7 km deep · 16 km away
  6. 3.018 km SE of Carbonado, Washington · 14878 days ago · 6 km deep · 89 km away
  7. 1.87 km NNE of Elbe, Washington · 14878 days ago · 4 km deep · 70 km away
  8. 1.59 km ENE of Kalama, Washington · 14878 days ago · 14 km deep · 46 km away
  9. 1.514 km SSE of Ashford, Washington · 14877 days ago · 8 km deep · 53 km away
  10. 1.538 km NNE of Amboy, Washington · 14875 days ago · -2 km deep · 0 km away
  11. 2.54 km NNE of La Center, WA · 14873 days ago · 16 km deep · 49 km away
  12. 1.522 km ESE of Packwood, Washington · 14872 days ago · -1 km deep · 70 km away
  13. 1.723 km ESE of Packwood, Washington · 14872 days ago · -1 km deep · 70 km away
  14. 3.019 km SSE of Carbonado, Washington · 14872 days ago · 10 km deep · 84 km away
  15. 1.637 km S of Morton, Washington · 14856 days ago · 0 km deep · 3 km away
  16. 1.620 km S of Morton, Washington · 14855 days ago · 8 km deep · 20 km away
  17. 1.812 km ENE of Yacolt, Washington · 14852 days ago · 6 km deep · 34 km away
  18. 1.638 km NNE of Amboy, Washington · 14843 days ago · -2 km deep · 1 km away
  19. 1.638 km NNE of Amboy, Washington · 14841 days ago · -2 km deep · 1 km away
  20. 1.838 km NNE of Amboy, Washington · 14834 days ago · -2 km deep · 0 km away
  21. 2.138 km NNE of Amboy, Washington · 14827 days ago · -1 km deep · 0 km away

Before

  1. 1.537 km NNE of Amboy, Washington · 14885 days ago · -2 km deep · 1 km away
  2. 1.838 km NNE of Amboy, Washington · 14886 days ago · -2 km deep · 2 km away
  3. 1.719 km S of Morton, Washington · 14887 days ago · 8 km deep · 20 km away
  4. 1.87 km NNE of Elbe, Washington · 14892 days ago · -1 km deep · 70 km away
  5. 2.112 km N of Mossyrock, Washington · 14898 days ago · 20 km deep · 55 km away
  6. 1.528 km NW of Carson, Washington · 14907 days ago · 11 km deep · 32 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10199783. Read Tue, Sep 22, 2026, 6:15 AM UTC.