Washington earthquakes

M1.6 earthquake 25 km ENE of Yacolt, Washington

A magnitude 1.6 earthquake struck 25 km ENE of Yacolt, Washington on Thu, Nov 1, 1984, 8:58 PM PST (04:58 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M2.7 10 km NNE of Ashford, Washington. This one was a foreshock.

Yacolt 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1984-11-02 04:58:27 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
45.975° N, 122.117° 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 0.7 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
130°
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: 13 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.237 km S of Morton, Washington · 15310 days ago · 0 km deep · 28 km away
  2. 1.922 km S of Morton, Washington · 15309 days ago · 10 km deep · 44 km away
  3. 1.838 km NNE of Amboy, Washington · 15305 days ago · -2 km deep · 26 km away
  4. 1.610 km ENE of Ashford, Washington · 15301 days ago · 11 km deep · 92 km away
  5. 1.738 km NNE of Amboy, Washington · 15297 days ago · -2 km deep · 27 km away
  6. 1.55 km ESE of Mossyrock, Washington · 15294 days ago · 20 km deep · 65 km away
  7. 1.738 km NNE of Amboy, Washington · 15293 days ago · -2 km deep · 26 km away
  8. 2.438 km NNE of Amboy, Washington · 15293 days ago · -2 km deep · 26 km away
  9. 1.76 km SSW of Morton, Washington · 15277 days ago · 19 km deep · 61 km away
  10. 2.51 km SSE of Beaverton, Oregon · 15271 days ago · 25 km deep · 76 km away
  11. 1.738 km S of Morton, Washington · 15264 days ago · -1 km deep · 27 km away
  12. 2.710 km NNE of Ashford, Washington · 15254 days ago · 11 km deep · 97 km away
  13. 1.738 km S of Morton, Washington · 15251 days ago · -1 km deep · 28 km away

Before

  1. 1.937 km S of Morton, Washington · 15313 days ago · 0 km deep · 29 km away
  2. 1.538 km NNE of Amboy, Washington · 15321 days ago · -2 km deep · 26 km away
  3. 2.015 km SSW of Clatskanie, Oregon · 15322 days ago · 54 km deep · 92 km away
  4. 1.537 km SSE of Morton, Washington · 15323 days ago · 9 km deep · 29 km away
  5. 1.638 km NNE of Amboy, Washington · 15323 days ago · -2 km deep · 26 km away
  6. 1.541 km SSE of Morton, Washington · 15324 days ago · 9 km deep · 31 km away
  7. 2.06 km E of Ashford, Washington · 15325 days ago · 5 km deep · 87 km away
  8. 1.738 km NNE of Amboy, Washington · 15326 days ago · -2 km deep · 27 km away
  9. 1.529 km S of Mossyrock, Washington · 15327 days ago · 15 km deep · 41 km away
  10. 2.138 km NNE of Amboy, Washington · 15332 days ago · -2 km deep · 27 km away
  11. 1.95 km ESE of Packwood, Washington · 15335 days ago · 2 km deep · 80 km away
  12. 1.525 km S of Morton, Washington · 15336 days ago · 8 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10180578. Read Fri, Oct 2, 2026, 7:32 PM UTC.