Washington earthquakes

M1.7 earthquake 3 km SSW of Vashon, Washington

A magnitude 1.7 earthquake struck 3 km SSW of Vashon, Washington on Fri, Aug 9, 1974, 3:11 AM PDT (10:11 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.8 2 km E of Dash Point, Washington. This one was a foreshock.

Vashon 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
1.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1974-08-09 10:11:57 UTC
Depth
19.0 km (11.8 mi), shallow
Epicenter
47.420° N, 122.478° 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 0.0 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
169°
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: 26 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.25 km NNE of Vaughn, Washington · 19048 days ago · 21 km deep · 20 km away
  2. 2.07 km NE of Ashford, Washington · 19046 days ago · 5 km deep · 79 km away
  3. 2.113 km ESE of Ashford, Washington · 19044 days ago · 1 km deep · 90 km away
  4. 2.82 km E of Dash Point, Washington · 19043 days ago · 6 km deep · 12 km away
  5. 1.95 km WNW of Coupeville, Washington · 19042 days ago · 19 km deep · 92 km away
  6. 2.25 km SW of Wilderness Rim, Washington · 19042 days ago · 20 km deep · 50 km away
  7. 2.10 km WNW of Brier, Washington · 19040 days ago · 20 km deep · 43 km away
  8. 2.43 km WNW of Fobes Hill, Washington · 19040 days ago · 32 km deep · 64 km away
  9. 2.03 km N of Kingston, Washington · 19037 days ago · 13 km deep · 46 km away
  10. 1.714 km SSE of Greenwater, Washington · 19037 days ago · 5 km deep · 82 km away
  11. 2.210 km NNW of Quilcene, Washington · 19032 days ago · 18 km deep · 64 km away
  12. 1.519 km WNW of Hoodsport, Washington · 19029 days ago · -1 km deep · 68 km away
  13. 1.827 km SSE of Greenwater, Washington · 19028 days ago · 0 km deep · 94 km away
  14. 1.816 km NE of Jamestown, Washington · 19023 days ago · 52 km deep · 95 km away
  15. 2.022 km ENE of Ashford, Washington · 19022 days ago · -1 km deep · 82 km away
  16. 2.28 km NW of Seattle, Washington · 19022 days ago · 17 km deep · 28 km away
  17. 2.010 km NE of Snoqualmie, Washington · 19017 days ago · 10 km deep · 60 km away
  18. 2.014 km WSW of Easton, Washington · 19016 days ago · 4 km deep · 89 km away
  19. 2.612 km SE of Ashford, Washington · 19014 days ago · 6 km deep · 93 km away
  20. 1.92 km NNW of Maple Valley, Washington · 19009 days ago · 3 km deep · 31 km away
  21. 1.911 km SE of Ashford, Washington · 19008 days ago · 2 km deep · 92 km away
  22. 2.119 km NE of Tanner, Washington · 19003 days ago · 9 km deep · 73 km away
  23. 1.68 km ENE of Snoqualmie, Washington · 19003 days ago · 10 km deep · 59 km away
  24. 1.711 km NE of Tanner, Washington · 19003 days ago · 12 km deep · 65 km away
  25. 2.11 km W of Woods Creek, Washington · 19000 days ago · 31 km deep · 66 km away
  26. 2.311 km NNE of Jamestown, Washington · 18996 days ago · 22 km deep · 97 km away

Before

  1. 2.06 km ENE of Ashford, Washington · 19055 days ago · 6 km deep · 80 km away
  2. 1.51 km WSW of Mountlake Terrace, Washington · 19055 days ago · 0 km deep · 42 km away
  3. 1.610 km NNW of Onalaska, Washington · 19056 days ago · 34 km deep · 86 km away
  4. 1.713 km NE of Snoqualmie, Washington · 19057 days ago · 3 km deep · 61 km away
  5. 1.78 km S of Wilderness Rim, Washington · 19060 days ago · 17 km deep · 53 km away
  6. 2.28 km ESE of Hobart, Washington · 19066 days ago · 18 km deep · 45 km away
  7. 1.63 km SW of City of Sammamish, Washington · 19067 days ago · 12 km deep · 36 km away
  8. 1.93 km SSW of Wilderness Rim, Washington · 19075 days ago · 18 km deep · 52 km away
  9. 1.72 km SW of Lake Forest Park, Washington · 19078 days ago · 17 km deep · 38 km away
  10. 1.70 km ESE of Woodinville, Washington · 19079 days ago · 35 km deep · 44 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10859248. Read Sun, Oct 4, 2026, 10:47 PM UTC.