Washington earthquakes

M1.7 earthquake 19 km S of Morton, Washington

A magnitude 1.7 earthquake struck 19 km S of Morton, Washington on Thu, Dec 19, 1985, 7:18 AM PST (15:18 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M1.8 38 km NNE of Amboy, Washington. This one was a foreshock.

Morton forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1985-12-19 15:18:31 UTC
Depth
8.0 km (4.9 mi), shallow
Epicenter
46.380° N, 122.252° 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
±0.04
Depth from
From location
Station coverage gap
67°
Stations used
21

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 3 in the 30 days before it.

After

  1. 1.838 km NNE of Amboy, Washington · 14888 days ago · -2 km deep · 19 km away
  2. 1.537 km NNE of Amboy, Washington · 14887 days ago · -2 km deep · 20 km away
  3. 2.238 km NNE of Amboy, Washington · 14886 days ago · -1 km deep · 20 km away
  4. 1.66 km NE of Amboy, Washington · 14886 days ago · 16 km deep · 49 km away
  5. 1.725 km E of Castle Rock, Washington · 14883 days ago · 17 km deep · 27 km away
  6. 3.124 km S of Morton, Washington · 14882 days ago · 6 km deep · 5 km away
  7. 2.424 km S of Morton, Washington · 14882 days ago · 6 km deep · 5 km away
  8. 1.524 km S of Morton, Washington · 14882 days ago · 7 km deep · 4 km away
  9. 3.018 km SE of Carbonado, Washington · 14880 days ago · 6 km deep · 72 km away
  10. 1.87 km NNE of Elbe, Washington · 14880 days ago · 4 km deep · 51 km away
  11. 1.59 km ENE of Kalama, Washington · 14880 days ago · 14 km deep · 54 km away
  12. 1.514 km SSE of Ashford, Washington · 14879 days ago · 8 km deep · 38 km away
  13. 1.538 km NNE of Amboy, Washington · 14877 days ago · -2 km deep · 20 km away
  14. 2.54 km NNE of La Center, WA · 14875 days ago · 16 km deep · 62 km away
  15. 1.522 km ESE of Packwood, Washington · 14874 days ago · -1 km deep · 67 km away
  16. 1.723 km ESE of Packwood, Washington · 14874 days ago · -1 km deep · 67 km away
  17. 3.019 km SSE of Carbonado, Washington · 14874 days ago · 10 km deep · 66 km away
  18. 1.637 km S of Morton, Washington · 14858 days ago · 0 km deep · 18 km away
  19. 1.620 km S of Morton, Washington · 14857 days ago · 8 km deep · 1 km away
  20. 1.812 km ENE of Yacolt, Washington · 14854 days ago · 6 km deep · 54 km away
  21. 1.5Washington-Oregon border region · 14845 days ago · -1 km deep · 86 km away
  22. 1.638 km NNE of Amboy, Washington · 14845 days ago · -2 km deep · 20 km away
  23. 1.638 km NNE of Amboy, Washington · 14843 days ago · -2 km deep · 20 km away
  24. 1.838 km NNE of Amboy, Washington · 14836 days ago · -2 km deep · 20 km away

Before

  1. 1.87 km NNE of Elbe, Washington · 14894 days ago · -1 km deep · 51 km away
  2. 2.112 km N of Mossyrock, Washington · 14900 days ago · 20 km deep · 35 km away
  3. 1.528 km NW of Carson, Washington · 14909 days ago · 11 km deep · 53 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10199533. Read Thu, Sep 24, 2026, 5:11 AM UTC.