Washington earthquakes

M1.8 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.8 earthquake struck 38 km NNE of Amboy, Washington on Fri, May 18, 1984, 11:54 AM PDT (18:54 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.7 5 km N of West Longview, 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
1.8 (md), micro
Local time
UTC
1984-05-18 18:54:38 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
46.212° N, 122.192° 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, 0.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
83°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 1.710 km E of Eatonville, Washington · 15466 days ago · 5 km deep · 75 km away
  2. 1.711 km ENE of Prescott, Oregon · 15459 days ago · 19 km deep · 45 km away
  3. 1.613 km ESE of Yacolt, Washington · 15458 days ago · 11 km deep · 42 km away
  4. 3.75 km N of West Longview, Washington · 15450 days ago · 52 km deep · 63 km away
  5. 1.918 km NNE of Ashford, Washington · 15449 days ago · 6 km deep · 79 km away
  6. 1.916 km NE of Woodland, Washington · 15447 days ago · 16 km deep · 39 km away
  7. 1.638 km NNE of Amboy, Washington · 15442 days ago · -2 km deep · 1 km away
  8. 2.29 km ENE of Ashford, Washington · 15441 days ago · 7 km deep · 67 km away
  9. 2.115 km NE of Ashford, Washington · 15440 days ago · 8 km deep · 77 km away
  10. 1.838 km NNE of Amboy, Washington · 15437 days ago · -1 km deep · 1 km away
  11. 1.938 km NNE of Amboy, Washington · 15434 days ago · -1 km deep · 1 km away
  12. 2.038 km NNE of Amboy, Washington · 15433 days ago · -1 km deep · 1 km away
  13. 1.538 km NNE of Amboy, Washington · 15433 days ago · -1 km deep · 1 km away
  14. 2.138 km NNE of Amboy, Washington · 15432 days ago · -1 km deep · 1 km away
  15. 1.938 km NNE of Amboy, Washington · 15431 days ago · -1 km deep · 1 km away
  16. 2.438 km NNE of Amboy, Washington · 15430 days ago · 0 km deep · 1 km away
  17. 1.838 km NNE of Amboy, Washington · 15430 days ago · -1 km deep · 1 km away
  18. 1.53 km SSW of Orting, Washington · 15429 days ago · 0 km deep · 95 km away
  19. 1.538 km NNE of Amboy, Washington · 15428 days ago · -1 km deep · 1 km away
  20. 1.524 km ESE of Packwood, Washington · 15421 days ago · 4 km deep · 73 km away
  21. 1.616 km NNE of Onalaska, Washington · 15421 days ago · -1 km deep · 63 km away
  22. 2.038 km NNE of Amboy, Washington · 15418 days ago · -2 km deep · 1 km away
  23. 1.837 km NNE of Amboy, Washington · 15415 days ago · 0 km deep · 1 km away
  24. 2.16 km NE of Packwood, Washington · 15412 days ago · 5 km deep · 66 km away
  25. 1.711 km SSW of Pe Ell, Washington · 15412 days ago · -1 km deep · 93 km away
  26. 2.814 km S of Morton, Washington · 15408 days ago · 14 km deep · 25 km away

Before

  1. 1.538 km NNE of Amboy, Washington · 15470 days ago · -1 km deep · 1 km away
  2. 2.314 km SE of Ashford, Washington · 15470 days ago · 7 km deep · 56 km away
  3. 1.5Washington · 15470 days ago · -1 km deep · 1 km away
  4. 1.838 km NNE of Amboy, Washington · 15470 days ago · -1 km deep · 1 km away
  5. 2.037 km NNE of Amboy, Washington · 15471 days ago · -2 km deep · 2 km away
  6. 1.538 km NNE of Amboy, Washington · 15471 days ago · -2 km deep · 1 km away
  7. 1.738 km NNE of Amboy, Washington · 15474 days ago · -1 km deep · 1 km away
  8. 1.738 km NNE of Amboy, Washington · 15475 days ago · 0 km deep · 1 km away
  9. 2.012 km S of Morton, Washington · 15479 days ago · 7 km deep · 27 km away
  10. 1.88 km E of Ashford, Washington · 15484 days ago · 13 km deep · 64 km away
  11. 1.713 km N of Skamokawa Valley, Washington · 15490 days ago · 10 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10176153. Read Tue, Sep 22, 2026, 11:17 AM UTC.