Washington earthquakes

M1.8 earthquake 9 km ENE of Ashford, Washington

A magnitude 1.8 earthquake struck 9 km ENE of Ashford, Washington on Fri, Aug 2, 1991, 8:43 AM PDT (15:43 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.8 37 km NNE of Amboy, Washington. This one was a foreshock.

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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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-08-02 15:43:02 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
46.782° N, 121.911° 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, 0.5 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
52°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.39 km ENE of Ashford, Washington · 12845 days ago · 5 km deep · 0 km away
  2. 2.03 km WNW of Maple Valley, Washington · 12842 days ago · 5 km deep · 70 km away
  3. 2.016 km N of Amboy, Washington · 12839 days ago · 17 km deep · 90 km away
  4. 1.75 km SSE of Mineral, Washington · 12836 days ago · 18 km deep · 21 km away
  5. 2.09 km ENE of Ashford, Washington · 12830 days ago · 6 km deep · 0 km away
  6. 2.33 km W of Wauna, Washington · 12827 days ago · 20 km deep · 89 km away
  7. 1.85 km E of Belfair, Washington · 12824 days ago · 45 km deep · 98 km away
  8. 1.628 km N of Packwood, Washington · 12822 days ago · -1 km deep · 20 km away
  9. 1.73 km SW of Tacoma, Washington · 12820 days ago · 49 km deep · 65 km away
  10. 2.238 km NNE of Amboy, Washington · 12820 days ago · -2 km deep · 67 km away
  11. 1.738 km S of Morton, Washington · 12819 days ago · 3 km deep · 66 km away
  12. 2.038 km NNE of Amboy, Washington · 12819 days ago · -1 km deep · 68 km away
  13. 1.53 km SSW of Des Moines, Washington · 12814 days ago · 18 km deep · 74 km away
  14. 2.222 km ENE of Ashford, Washington · 12813 days ago · -2 km deep · 14 km away
  15. 2.237 km NNE of Amboy, Washington · 12812 days ago · -2 km deep · 69 km away
  16. 1.63 km SE of Lake Marcel-Stillwater, WA · 12809 days ago · 7 km deep · 99 km away
  17. 2.837 km NNE of Amboy, Washington · 12807 days ago · 3 km deep · 68 km away
  18. 2.019 km S of Morton, Washington · 12806 days ago · 16 km deep · 52 km away
  19. 2.238 km NNE of Amboy, Washington · 12806 days ago · 2 km deep · 68 km away
  20. 2.138 km NNE of Amboy, Washington · 12804 days ago · 5 km deep · 68 km away
  21. 1.838 km NNE of Amboy, Washington · 12804 days ago · 3 km deep · 68 km away
  22. 1.74 km NE of White Center, Washington · 12800 days ago · 27 km deep · 89 km away
  23. 2.333 km NE of Amboy, Washington · 12800 days ago · 0 km deep · 74 km away
  24. 1.836 km NNE of Amboy, Washington · 12800 days ago · -2 km deep · 69 km away
  25. 1.62 km WNW of Sammamish, Washington · 12796 days ago · -1 km deep · 98 km away
  26. 2.04 km SSE of Grapeview, Washington · 12794 days ago · 18 km deep · 90 km away
  27. 1.923 km S of Morton, Washington · 12794 days ago · 9 km deep · 55 km away
  28. 2.538 km NNE of Amboy, Washington · 12793 days ago · -2 km deep · 68 km away
  29. 2.338 km NNE of Amboy, Washington · 12792 days ago · -2 km deep · 68 km away
  30. 1.65 km NW of Federal Way, Washington · 12790 days ago · 14 km deep · 72 km away
  31. 2.127 km SSE of Mossyrock, Washington · 12788 days ago · 0 km deep · 62 km away
  32. 1.720 km ENE of Ashford, Washington · 12787 days ago · -1 km deep · 11 km away

Before

  1. 2.310 km ENE of Ashford, Washington · 12850 days ago · 6 km deep · 0 km away
  2. 2.238 km NNE of Amboy, Washington · 12853 days ago · 0 km deep · 68 km away
  3. 3.24 km SSE of Bethel, Washington · 12854 days ago · 24 km deep · 92 km away
  4. 1.54 km SW of Fall City, Washington · 12856 days ago · 19 km deep · 83 km away
  5. 1.57 km W of Morton, Washington · 12856 days ago · 7 km deep · 42 km away
  6. 1.69 km ESE of Riverbend, Washington · 12857 days ago · 8 km deep · 74 km away
  7. 1.926 km WNW of Trout Lake, Washington · 12859 days ago · 14 km deep · 77 km away
  8. 1.636 km NNE of Amboy, Washington · 12863 days ago · -1 km deep · 70 km away
  9. 1.55 km ENE of Enumclaw, Washington · 12864 days ago · 16 km deep · 50 km away
  10. 2.22 km ENE of Yarrow Point, Washington · 12864 days ago · 0 km deep · 100 km away
  11. 2.54 km NE of Enumclaw, Washington · 12865 days ago · 16 km deep · 50 km away
  12. 2.037 km NNE of Amboy, Washington · 12867 days ago · -2 km deep · 69 km away
  13. 1.631 km NNE of Amboy, Washington · 12873 days ago · 9 km deep · 74 km away
  14. 1.51 km E of Clyde Hill, Washington · 12875 days ago · 23 km deep · 97 km away
  15. 1.91 km ESE of Clyde Hill, Washington · 12875 days ago · 25 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10274483. Read Sat, Oct 3, 2026, 3:06 AM UTC.