Washington earthquakes

M1.5 earthquake 9 km SSW of Seabeck, Washington

A magnitude 1.5 earthquake struck 9 km SSW of Seabeck, Washington on Sat, Aug 16, 1975, 12:13 AM PDT (07:13 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M1.9 15 km SSW of Blyn, 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), micro
Local time
UTC
1975-08-16 07:13:27 UTC
Depth
14.3 km (8.9 mi), shallow
Epicenter
47.562° N, 122.895° 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 0.7 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
122°
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: 31 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.915 km SSW of Blyn, Washington · 18659 days ago · 39 km deep · 42 km away
  2. 2.42 km W of Fall City, Washington · 18659 days ago · 5 km deep · 73 km away
  3. 2.22 km N of Union Hill-Novelty Hill, Washington · 18659 days ago · 18 km deep · 66 km away
  4. 3.06 km N of Olympia, Washington · 18657 days ago · 43 km deep · 52 km away
  5. 2.04 km WSW of Snoqualmie, Washington · 18656 days ago · 22 km deep · 77 km away
  6. 2.36 km E of Marrowstone, Washington · 18656 days ago · 24 km deep · 58 km away
  7. 2.14 km NE of Carnation, Washington · 18655 days ago · 9 km deep · 78 km away
  8. 2.02 km SW of Snoqualmie, Washington · 18654 days ago · -1 km deep · 79 km away
  9. 2.53 km N of Kingston, Washington · 18651 days ago · 23 km deep · 42 km away
  10. 2.24 km SSW of Snoqualmie, Washington · 18649 days ago · 14 km deep · 79 km away
  11. 2.61 km WNW of Crocker, Washington · 18648 days ago · 7 km deep · 79 km away
  12. 2.81 km NNE of Ravensdale, Washington · 18647 days ago · -1 km deep · 73 km away
  13. 2.68 km W of Gorst, Washington · 18644 days ago · 21 km deep · 7 km away
  14. 2.61 km WNW of Mirrormont, Washington · 18642 days ago · 11 km deep · 67 km away
  15. 2.02 km SW of Lake Forest Park, Washington · 18641 days ago · 14 km deep · 49 km away
  16. 1.92 km WNW of Bryn Mawr-Skyway, Washington · 18641 days ago · 24 km deep · 47 km away
  17. 2.00 km NNE of Bellevue, Washington · 18640 days ago · 16 km deep · 52 km away
  18. 2.03 km WSW of Woodway, Washington · 18640 days ago · 11 km deep · 43 km away
  19. 1.83 km SSE of La Conner, Washington · 18638 days ago · -1 km deep · 94 km away
  20. 1.51 km NNW of Tukwila, Washington · 18635 days ago · 23 km deep · 48 km away
  21. 1.74 km NNE of Ravensdale, Washington · 18633 days ago · 7 km deep · 74 km away
  22. 1.91 km NW of Mill Creek, Washington · 18632 days ago · 24 km deep · 61 km away
  23. 3.56 km SW of Clinton, Washington · 18625 days ago · 26 km deep · 55 km away
  24. 2.56 km SE of Oak Harbor, Washington · 18622 days ago · 17 km deep · 80 km away
  25. 1.65 km SE of Oak Harbor, Washington · 18621 days ago · 17 km deep · 81 km away
  26. 1.92 km ESE of Tanner, Washington · 18616 days ago · 5 km deep · 89 km away
  27. 2.50 km NNE of Erlands Point-Kitsap Lake, Washington · 18614 days ago · 19 km deep · 15 km away
  28. 3.13 km SE of Lake Roesiger, Washington · 18613 days ago · 17 km deep · 87 km away
  29. 2.83 km SSE of Lake Roesiger, Washington · 18612 days ago · 13 km deep · 85 km away
  30. 2.02 km SW of Gold Bar, Washington · 18607 days ago · -1 km deep · 93 km away
  31. 1.76 km NNW of Bangor Trident Base, Washington · 18606 days ago · 13 km deep · 27 km away

Before

  1. 1.53 km NW of Chico, Washington · 18668 days ago · 8 km deep · 14 km away
  2. 1.83 km E of Keyport, Washington · 18668 days ago · 15 km deep · 28 km away
  3. 1.93 km E of Keyport, Washington · 18669 days ago · 14 km deep · 28 km away
  4. 1.87 km NE of Brinnon, Washington · 18669 days ago · 14 km deep · 19 km away
  5. 1.82 km ESE of Silverdale, Washington · 18676 days ago · 21 km deep · 19 km away
  6. 3.42 km NE of Dash Point, Washington · 18688 days ago · 7 km deep · 45 km away
  7. 1.84 km SSE of Monroe, Washington · 18692 days ago · 12 km deep · 76 km away
  8. 2.22 km S of Startup, Washington · 18693 days ago · -1 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10861468. Read Tue, Sep 22, 2026, 3:59 PM UTC.