Washington earthquakes

M1.7 earthquake 6 km SSW of Morton, Washington

A magnitude 1.7 earthquake struck 6 km SSW of Morton, Washington on Tue, Dec 4, 1984, 12:48 PM PST (20:48 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M1.9 1 km NNE of Crocker, 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.

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The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1984-12-04 20:48:59 UTC
Depth
19.0 km (11.8 mi), shallow
Epicenter
46.509° N, 122.312° 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, 0.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
60°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.91 km NNE of Crocker, Washington · 15255 days ago · 7 km deep · 67 km away
  2. 3.25 km W of Home, Washington · 15254 days ago · 46 km deep · 94 km away
  3. 1.738 km S of Morton, Washington · 15254 days ago · -1 km deep · 34 km away
  4. 2.710 km NNE of Ashford, Washington · 15244 days ago · 11 km deep · 46 km away
  5. 1.738 km S of Morton, Washington · 15241 days ago · -1 km deep · 34 km away
  6. 3.114 km NNE of Ashford, Washington · 15239 days ago · 10 km deep · 49 km away
  7. 2.414 km NNE of Ashford, Washington · 15239 days ago · 8 km deep · 49 km away
  8. 1.623 km ENE of Ashford, Washington · 15237 days ago · 0 km deep · 57 km away
  9. 2.010 km NE of Ashford, Washington · 15233 days ago · 11 km deep · 46 km away
  10. 1.74 km SW of Des Moines, Washington · 15233 days ago · 15 km deep · 96 km away
  11. 1.74 km ENE of Bonney Lake, Washington · 15232 days ago · 6 km deep · 77 km away
  12. 1.510 km ENE of Ashford, Washington · 15231 days ago · 9 km deep · 45 km away
  13. 2.03 km W of Deer Island, Oregon · 15222 days ago · 23 km deep · 78 km away
  14. 1.73 km W of Deer Island, Oregon · 15221 days ago · 24 km deep · 78 km away
  15. 2.713 km NNE of Ashford, Washington · 15218 days ago · 12 km deep · 48 km away
  16. 1.63 km WSW of Felida, Washington · 15207 days ago · 11 km deep · 96 km away

Before

  1. 1.815 km NNE of Ashford, Washington · 15272 days ago · 7 km deep · 51 km away
  2. 2.438 km NNE of Amboy, Washington · 15283 days ago · -2 km deep · 35 km away
  3. 1.738 km NNE of Amboy, Washington · 15283 days ago · -2 km deep · 35 km away
  4. 1.55 km ESE of Mossyrock, Washington · 15284 days ago · 20 km deep · 8 km away
  5. 3.124 km NE of Ashford, Washington · 15284 days ago · 0 km deep · 60 km away
  6. 1.62 km N of Lakeland South, Washington · 15286 days ago · 13 km deep · 88 km away
  7. 1.738 km NNE of Amboy, Washington · 15287 days ago · -2 km deep · 35 km away
  8. 1.610 km ENE of Ashford, Washington · 15290 days ago · 11 km deep · 44 km away
  9. 1.838 km NNE of Amboy, Washington · 15295 days ago · -2 km deep · 35 km away
  10. 1.520 km NE of Ashford, Washington · 15295 days ago · 6 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10181058. Read Tue, Sep 22, 2026, 9:16 AM UTC.