Washington earthquakes

M1.5 earthquake 0 km WNW of Maple Valley, Washington

A magnitude 1.5 earthquake struck 0 km WNW of Maple Valley, Washington on Sat, Apr 20, 1974, 7:39 PM PDT (02:39 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.5 20 km ENE of Packwood, Washington. This one was a foreshock.

Maple Valley 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
1974-04-21 02:39:49 UTC
Depth
2.3 km (1.4 mi), shallow
Epicenter
47.395° N, 122.057° 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 6.6 km horizontally, 99.9 km in depth
Magnitude uncertainty
±0.21
Depth from
Operator assigned
Station coverage gap
175°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 35 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.65 km WSW of Wilderness Rim, Washington · 19155 days ago · 16 km deep · 17 km away
  2. 2.418 km NNE of Packwood, Washington · 19155 days ago · 1 km deep · 82 km away
  3. 3.520 km ENE of Packwood, Washington · 19155 days ago · 3 km deep · 92 km away
  4. 1.60 km ENE of Edmonds, Washington · 19154 days ago · 8 km deep · 52 km away
  5. 1.820 km NE of Packwood, Washington · 19152 days ago · 5 km deep · 83 km away
  6. 1.60 km E of White Center, Washington · 19151 days ago · 23 km deep · 26 km away
  7. 2.14 km N of Packwood, Washington · 19150 days ago · 6 km deep · 88 km away
  8. 2.222 km NE of Packwood, Washington · 19150 days ago · 5 km deep · 83 km away
  9. 1.60 km WNW of Bangor Trident Base, Washington · 19149 days ago · 17 km deep · 62 km away
  10. 1.525 km ENE of Ashford, Washington · 19136 days ago · 6 km deep · 61 km away
  11. 1.67 km NW of Belfair, Washington · 19132 days ago · 13 km deep · 64 km away
  12. 2.025 km N of Packwood, Washington · 19129 days ago · 8 km deep · 68 km away
  13. 2.117 km NE of Snoqualmie, Washington · 19127 days ago · 3 km deep · 40 km away
  14. 1.64 km SW of Wilderness Rim, Washington · 19124 days ago · 21 km deep · 19 km away
  15. 1.93 km SW of Wilderness Rim, Washington · 19124 days ago · 18 km deep · 19 km away
  16. 3.03 km WSW of Ravensdale, Washington · 19124 days ago · 18 km deep · 6 km away
  17. 1.93 km NE of Maple Heights-Lake Desire, Washington · 19122 days ago · 11 km deep · 8 km away
  18. 2.01 km E of Skokomish, Washington · 19122 days ago · 45 km deep · 81 km away
  19. 2.22 km WNW of Hobart, Washington · 19121 days ago · 15 km deep · 5 km away
  20. 3.34 km SE of Lake Roesiger, Washington · 19121 days ago · 17 km deep · 64 km away
  21. 1.94 km SE of Lake Roesiger, Washington · 19121 days ago · 11 km deep · 64 km away
  22. 1.52 km SSE of Lake Roesiger, Washington · 19121 days ago · 14 km deep · 64 km away
  23. 1.70 km E of Ravensdale, Washington · 19119 days ago · 16 km deep · 8 km away
  24. 1.61 km SSW of Ravensdale, Washington · 19119 days ago · 18 km deep · 8 km away
  25. 2.26 km NW of Roy, Washington · 19112 days ago · 12 km deep · 55 km away
  26. 1.61 km SSE of Seattle, Washington · 19111 days ago · 5 km deep · 30 km away
  27. 2.04 km WSW of Seattle, Washington · 19110 days ago · 2 km deep · 32 km away
  28. 1.73 km SW of Seattle, Washington · 19110 days ago · 3 km deep · 31 km away
  29. 1.516 km WSW of Alder, Washington · 19107 days ago · 28 km deep · 82 km away
  30. 1.93 km NE of Quilcene, Washington · 19105 days ago · 17 km deep · 77 km away
  31. 1.813 km NE of Ashford, Washington · 19104 days ago · 5 km deep · 60 km away
  32. 2.114 km NE of Ashford, Washington · 19104 days ago · 12 km deep · 63 km away
  33. 1.711 km SE of Ashford, Washington · 19103 days ago · 7 km deep · 80 km away
  34. 1.90 km SW of Lakeland South, Washington · 19100 days ago · 8 km deep · 22 km away
  35. 1.94 km SW of Wilderness Rim, Washington · 19097 days ago · 17 km deep · 19 km away

Before

  1. 2.13 km SW of Three Lakes, Washington · 19155 days ago · 9 km deep · 59 km away
  2. 2.321 km NE of Packwood, Washington · 19156 days ago · 4 km deep · 82 km away
  3. 4.719 km NE of Packwood, Washington · 19156 days ago · 4 km deep · 87 km away
  4. 1.922 km NE of Packwood, Washington · 19157 days ago · -1 km deep · 89 km away
  5. 1.58 km NNE of Ashford, Washington · 19159 days ago · 7 km deep · 64 km away
  6. 2.4Washington · 19161 days ago · 24 km deep · 64 km away
  7. 1.88 km E of Ashford, Washington · 19161 days ago · 19 km deep · 70 km away
  8. 1.51 km N of Seattle, Washington · 19164 days ago · -1 km deep · 32 km away
  9. 2.30 km NE of Seattle, Washington · 19165 days ago · -1 km deep · 31 km away
  10. 2.01 km WSW of Mercer Island, Washington · 19169 days ago · 0 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10858503. Read Wed, Sep 30, 2026, 6:40 AM UTC.