Washington earthquakes

M1.5 earthquake 1 km W of Silvana, Washington

A magnitude 1.5 earthquake struck 1 km W of Silvana, Washington on Sun, Aug 8, 2004, 11:33 PM PDT (06:33 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.1 4 km NNE of Jamestown, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-08-09 06:33:26 UTC
Depth
7.0 km (4.4 mi), shallow
Epicenter
48.203° N, 122.269° 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 0.6 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
93°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 38 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.34 km E of Klahanie, Washington · 8089 days ago · 2 km deep · 74 km away
  2. 1.614 km SSW of Chilliwack, Canada · 8089 days ago · -1 km deep · 96 km away
  3. 2.318 km E of Verlot, Washington · 8087 days ago · 4 km deep · 57 km away
  4. 1.51 km NE of Lyman, Washington · 8086 days ago · 1 km deep · 41 km away
  5. 1.60 km NW of Enetai, Washington · 8086 days ago · 26 km deep · 73 km away
  6. 1.62 km ESE of Klahanie, Washington · 8082 days ago · 5 km deep · 74 km away
  7. 2.03 km NE of Wilburton, Washington · 8082 days ago · 24 km deep · 64 km away
  8. 1.75 km SE of Hobart, Washington · 8081 days ago · 1 km deep · 95 km away
  9. 1.86 km W of Orcas, Washington · 8080 days ago · 13 km deep · 71 km away
  10. 1.73 km NNW of Sumas, Washington · 8080 days ago · 0 km deep · 92 km away
  11. 1.65 km SSE of Swede Heaven, Washington · 8079 days ago · 9 km deep · 43 km away
  12. 1.53 km ENE of Dash Point, Washington · 8079 days ago · 29 km deep · 98 km away
  13. 1.91 km WNW of Swede Heaven, Washington · 8078 days ago · 7 km deep · 40 km away
  14. 2.12 km E of Edmonds, Washington · 8078 days ago · 31 km deep · 44 km away
  15. 1.63 km WSW of White Center, Washington · 8078 days ago · 20 km deep · 78 km away
  16. 1.54 km NE of Anacortes, Washington · 8076 days ago · 16 km deep · 44 km away
  17. 2.44 km NNE of Anacortes, Washington · 8076 days ago · 15 km deep · 45 km away
  18. 2.03 km NE of Anacortes, Washington · 8075 days ago · 17 km deep · 44 km away
  19. 1.5Washington · 8075 days ago · 7 km deep · 44 km away
  20. 1.7British Columbia, Canada · 8072 days ago · 1 km deep · 95 km away
  21. 1.51 km NNW of Silvana, Washington · 8071 days ago · 8 km deep · 2 km away
  22. 2.04 km E of Dash Point, Washington · 8070 days ago · 28 km deep · 98 km away
  23. 1.75 km NNW of Maplewood, Washington · 8068 days ago · 20 km deep · 87 km away
  24. 1.59 km WSW of Port Ludlow, Washington · 8064 days ago · 26 km deep · 52 km away
  25. 1.65 km SE of Oso, Washington · 8060 days ago · 12 km deep · 30 km away
  26. 1.51 km E of Maple Valley, Washington · 8060 days ago · 13 km deep · 92 km away
  27. 1.92 km SE of Sudden Valley, Washington · 8059 days ago · 20 km deep · 56 km away
  28. 2.27 km SSE of Maple Falls, Washington · 8057 days ago · -1 km deep · 75 km away
  29. 1.55 km SSW of Fall City, Washington · 8055 days ago · 13 km deep · 81 km away
  30. 1.83 km E of Dash Point, Washington · 8051 days ago · 26 km deep · 99 km away
  31. 1.96 km ENE of Acme, Washington · 8049 days ago · 14 km deep · 60 km away
  32. 3.14 km NNE of Jamestown, Washington · 8044 days ago · 16 km deep · 59 km away
  33. 1.623 km WNW of Brinnon, Washington · 8044 days ago · 42 km deep · 85 km away
  34. 1.58 km SW of Camano, Washington · 8036 days ago · 26 km deep · 27 km away
  35. 2.32 km NE of Union Hill-Novelty Hill, Washington · 8036 days ago · 9 km deep · 60 km away
  36. 1.52 km ESE of Sudden Valley, Washington · 8035 days ago · 19 km deep · 57 km away
  37. 1.75 km ENE of Granite Falls, Washington · 8032 days ago · -1 km deep · 30 km away
  38. 1.64 km SE of Oso, Washington · 8031 days ago · 12 km deep · 28 km away

Before

  1. 2.04 km W of Fall City, Washington · 8090 days ago · 1 km deep · 74 km away
  2. 2.57 km NW of Quilcene, Washington · 8094 days ago · 18 km deep · 63 km away
  3. 1.63 km ESE of Oso, Washington · 8099 days ago · 13 km deep · 29 km away
  4. 1.516 km SW of Baring, Washington · 8100 days ago · 15 km deep · 77 km away
  5. 1.61 km N of Darrington, Washington · 8100 days ago · 11 km deep · 50 km away
  6. 2.13 km ESE of Dash Point, Washington · 8102 days ago · 27 km deep · 99 km away
  7. 2.04 km W of Gorst, Washington · 8102 days ago · 10 km deep · 84 km away
  8. 1.73 km E of Dash Point, Washington · 8103 days ago · 27 km deep · 99 km away
  9. 2.04 km E of Dash Point, Washington · 8104 days ago · 24 km deep · 99 km away
  10. 2.22 km NNW of Mill Creek, Washington · 8111 days ago · 24 km deep · 36 km away
  11. 1.718 km SSW of Point Roberts, Washington · 8112 days ago · 15 km deep · 94 km away
  12. 1.72 km NNW of White Center, Washington · 8112 days ago · 23 km deep · 74 km away
  13. 1.73 km SSE of Carnation, Washington · 8112 days ago · 19 km deep · 71 km away
  14. 2.18 km SSW of Anacortes, Washington · 8116 days ago · 23 km deep · 38 km away
  15. 2.26 km NNW of North Sultan, Washington · 8119 days ago · 16 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10608953. Read Fri, Oct 2, 2026, 9:33 PM UTC.