Washington earthquakes

M1.7 earthquake 5 km SSW of Seabeck, Washington

A magnitude 1.7 earthquake struck 5 km SSW of Seabeck, Washington on Wed, Oct 23, 1974, 11:51 PM PDT (06:51 UTC), 20 km (13 mi) below the surface.

A larger quake followed: M2.9 0 km NNE of Seattle, 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
1.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1974-10-24 06:51:19 UTC
Depth
20.3 km (12.6 mi), shallow
Epicenter
47.588° N, 122.847° 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, 0.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
150°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.96 km WSW of La Grande, Washington · 18972 days ago · 62 km deep · 92 km away
  2. 2.0Puget Sound region, Washington · 18972 days ago · 7 km deep · 35 km away
  3. 2.03 km ESE of Lake Roesiger, Washington · 18968 days ago · 18 km deep · 83 km away
  4. 2.04 km SSW of Ault Field, Washington · 18967 days ago · 27 km deep · 80 km away
  5. 1.74 km WNW of Lofall, Washington · 18965 days ago · 19 km deep · 28 km away
  6. 1.96 km SSE of Carbonado, Washington · 18965 days ago · -1 km deep · 89 km away
  7. 2.21 km WNW of Beaux Arts Village, Washington · 18962 days ago · 14 km deep · 47 km away
  8. 1.71 km SSE of Lynnwood, Washington · 18961 days ago · 17 km deep · 47 km away
  9. 2.218 km SSE of Carbonado, Washington · 18960 days ago · 3 km deep · 99 km away
  10. 1.67 km ESE of Enumclaw, Washington · 18960 days ago · 1 km deep · 85 km away
  11. 2.214 km N of Onalaska, Washington · 18960 days ago · -1 km deep · 99 km away
  12. 2.31 km W of Hobart, Washington · 18959 days ago · 19 km deep · 66 km away
  13. 2.85 km SE of Bucoda, Washington · 18957 days ago · 3 km deep · 92 km away
  14. 2.33 km SSE of Issaquah, Washington · 18954 days ago · 21 km deep · 64 km away
  15. 2.03 km W of Belfair, Washington · 18951 days ago · -1 km deep · 15 km away
  16. 1.98 km ESE of Lake Roesiger, Washington · 18951 days ago · 8 km deep · 88 km away
  17. 1.82 km ESE of Snoqualmie, Washington · 18950 days ago · 10 km deep · 79 km away
  18. 1.51 km W of Monroe, Washington · 18950 days ago · -1 km deep · 71 km away
  19. 1.511 km N of Quilcene, Washington · 18949 days ago · 23 km deep · 38 km away
  20. 1.94 km ESE of Cathcart, Washington · 18948 days ago · 16 km deep · 66 km away
  21. 1.89 km ESE of Enumclaw, Washington · 18947 days ago · 8 km deep · 86 km away
  22. 1.80 km W of Fobes Hill, Washington · 18938 days ago · 9 km deep · 67 km away
  23. 1.52 km NNW of Gorst, Washington · 18936 days ago · 17 km deep · 11 km away
  24. 1.63 km NNW of Bryn Mawr-Skyway, Washington · 18935 days ago · 30 km deep · 44 km away
  25. 1.92 km NE of Riverton, Washington · 18935 days ago · 25 km deep · 44 km away
  26. 2.90 km NNE of Seattle, Washington · 18934 days ago · -1 km deep · 39 km away
  27. 1.62 km WNW of Bryn Mawr-Skyway, Washington · 18933 days ago · 27 km deep · 44 km away

Before

  1. 1.83 km NE of North Bend, Washington · 18972 days ago · 19 km deep · 82 km away
  2. 2.08 km ENE of Tanner, Washington · 18974 days ago · -1 km deep · 91 km away
  3. 2.45 km SE of Rainier, Washington · 18983 days ago · -1 km deep · 84 km away
  4. 2.311 km NNE of Jamestown, Washington · 18995 days ago · 22 km deep · 71 km away
  5. 2.11 km W of Woods Creek, Washington · 18999 days ago · 31 km deep · 77 km away
  6. 1.711 km NE of Tanner, Washington · 19001 days ago · 12 km deep · 91 km away
  7. 2.112 km NNW of Carlsborg, Washington · 19002 days ago · 46 km deep · 74 km away
  8. 1.68 km ENE of Snoqualmie, Washington · 19002 days ago · 10 km deep · 84 km away
  9. 2.119 km NE of Tanner, Washington · 19002 days ago · 9 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10859663. Read Sat, Oct 3, 2026, 4:27 PM UTC.