Washington earthquakes

M1.5 earthquake 5 km ESE of Mossyrock, Washington

A magnitude 1.5 earthquake struck 5 km ESE of Mossyrock, Washington on Sat, Nov 17, 1984, 3:10 AM PST (11:10 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M1.7 38 km NNE of Amboy, Washington. This one was a foreshock.

Mossyrock 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
1.5 (md), micro
Local time
UTC
1984-11-17 11:10:38 UTC
Depth
20.0 km (12.4 mi), shallow
Epicenter
46.519° N, 122.418° 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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
49°
Stations used
27

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 16 in the 30 days before it.

After

  1. 1.738 km NNE of Amboy, Washington · 15283 days ago · -2 km deep · 39 km away
  2. 2.438 km NNE of Amboy, Washington · 15283 days ago · -2 km deep · 39 km away
  3. 1.815 km NNE of Ashford, Washington · 15272 days ago · 7 km deep · 55 km away
  4. 1.76 km SSW of Morton, Washington · 15267 days ago · 19 km deep · 8 km away
  5. 1.91 km NNE of Crocker, Washington · 15255 days ago · 7 km deep · 69 km away
  6. 3.25 km W of Home, Washington · 15254 days ago · 46 km deep · 90 km away
  7. 1.738 km S of Morton, Washington · 15254 days ago · -1 km deep · 38 km away
  8. 2.710 km NNE of Ashford, Washington · 15244 days ago · 11 km deep · 50 km away
  9. 1.738 km S of Morton, Washington · 15241 days ago · -1 km deep · 38 km away
  10. 3.114 km NNE of Ashford, Washington · 15239 days ago · 10 km deep · 53 km away
  11. 2.414 km NNE of Ashford, Washington · 15239 days ago · 8 km deep · 53 km away
  12. 1.623 km ENE of Ashford, Washington · 15237 days ago · 0 km deep · 62 km away
  13. 2.010 km NE of Ashford, Washington · 15233 days ago · 11 km deep · 51 km away
  14. 1.74 km SW of Des Moines, Washington · 15233 days ago · 15 km deep · 95 km away
  15. 1.74 km ENE of Bonney Lake, Washington · 15232 days ago · 6 km deep · 78 km away
  16. 1.510 km ENE of Ashford, Washington · 15231 days ago · 9 km deep · 50 km away

Before

  1. 3.124 km NE of Ashford, Washington · 15285 days ago · 0 km deep · 65 km away
  2. 1.62 km N of Lakeland South, Washington · 15286 days ago · 13 km deep · 87 km away
  3. 1.738 km NNE of Amboy, Washington · 15287 days ago · -2 km deep · 39 km away
  4. 1.610 km ENE of Ashford, Washington · 15291 days ago · 11 km deep · 50 km away
  5. 1.838 km NNE of Amboy, Washington · 15295 days ago · -2 km deep · 39 km away
  6. 1.520 km NE of Ashford, Washington · 15295 days ago · 6 km deep · 60 km away
  7. 1.922 km S of Morton, Washington · 15298 days ago · 10 km deep · 21 km away
  8. 2.237 km S of Morton, Washington · 15299 days ago · 0 km deep · 37 km away
  9. 1.625 km ENE of Yacolt, Washington · 15299 days ago · 6 km deep · 65 km away
  10. 1.937 km S of Morton, Washington · 15303 days ago · 0 km deep · 37 km away
  11. 1.92 km ESE of Enumclaw, Washington · 15306 days ago · 11 km deep · 83 km away
  12. 1.538 km NNE of Amboy, Washington · 15311 days ago · -2 km deep · 39 km away
  13. 2.015 km SSW of Clatskanie, Oregon · 15312 days ago · 54 km deep · 91 km away
  14. 1.537 km SSE of Morton, Washington · 15313 days ago · 9 km deep · 39 km away
  15. 1.638 km NNE of Amboy, Washington · 15313 days ago · -2 km deep · 39 km away
  16. 1.541 km SSE of Morton, Washington · 15314 days ago · 9 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10183068. Read Tue, Sep 22, 2026, 12:17 PM UTC.