Washington earthquakes

M1.9 earthquake 10 km SSW of Seabeck, Washington

A magnitude 1.9 earthquake struck 10 km SSW of Seabeck, Washington on Sun, May 1, 1977, 4:10 PM PDT (23:10 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.0 0 km NW of North Puyallup, 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
1.9 (md), micro
Local time
UTC
1977-05-01 23:10:35 UTC
Depth
15.7 km (9.7 mi), shallow
Epicenter
47.548° N, 122.874° 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, 0.8 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
117°
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 13 in the 30 days before it.

After

  1. 2.00 km NW of North Puyallup, Washington · 18041 days ago · 15 km deep · 58 km away
  2. 2.33 km ENE of Enetai, Washington · 18036 days ago · 11 km deep · 24 km away
  3. 3.05 km S of Quilcene, Washington · 18034 days ago · 45 km deep · 25 km away
  4. 2.218 km NNE of Ashford, Washington · 18026 days ago · 8 km deep · 99 km away
  5. 2.24 km E of Cathcart, Washington · 18025 days ago · 3 km deep · 71 km away
  6. 2.52 km SW of Brady, Washington · 18024 days ago · 39 km deep · 81 km away
  7. 2.33 km WSW of Wilderness Rim, Washington · 18018 days ago · 18 km deep · 81 km away
  8. 2.27 km NW of Kingston, Washington · 18013 days ago · 44 km deep · 40 km away
  9. 2.15 km SW of Gorst, Washington · 18010 days ago · 20 km deep · 11 km away
  10. 1.91 km SW of White Center, Washington · 18010 days ago · 24 km deep · 38 km away
  11. 1.94 km WNW of Wilderness Rim, Washington · 18009 days ago · 23 km deep · 80 km away
  12. 2.13 km N of Bonney Lake, Washington · 18000 days ago · 3 km deep · 65 km away
  13. 2.24 km NNE of Bonney Lake, Washington · 17999 days ago · 6 km deep · 65 km away
  14. 2.12 km S of Lakeland North, Washington · 17999 days ago · 8 km deep · 52 km away
  15. 1.80 km N of Normandy Park, Washington · 17998 days ago · 18 km deep · 42 km away
  16. 4.04 km N of Bangor Trident Base, Washington · 17995 days ago · 19 km deep · 26 km away
  17. 2.04 km WNW of Northwest Stanwood, Washington · 17994 days ago · 21 km deep · 88 km away
  18. 2.81 km NNW of Wauna, Washington · 17993 days ago · 44 km deep · 24 km away
  19. 2.318 km ESE of Carbonado, Washington · 17992 days ago · -1 km deep · 99 km away
  20. 2.13 km N of Bonney Lake, Washington · 17992 days ago · 2 km deep · 64 km away
  21. 1.510 km NW of Belfair, Washington · 17992 days ago · 24 km deep · 5 km away
  22. 1.52 km W of Mercer Island, Washington · 17989 days ago · 0 km deep · 46 km away
  23. 1.83 km NNE of Bonney Lake, Washington · 17989 days ago · 7 km deep · 65 km away
  24. 1.56 km WNW of Belfair, Washington · 17989 days ago · 18 km deep · 9 km away
  25. 2.011 km WSW of Porter, Washington · 17989 days ago · 0 km deep · 85 km away
  26. 1.71 km NNE of Bonney Lake, Washington · 17987 days ago · 14 km deep · 66 km away

Before

  1. 1.60 km W of Port Ludlow, Washington · 18044 days ago · -1 km deep · 44 km away
  2. 1.87 km SE of Enumclaw, Washington · 18045 days ago · 19 km deep · 84 km away
  3. 1.92 km ESE of Dash Point, Washington · 18053 days ago · 12 km deep · 44 km away
  4. 1.74 km WSW of White Center, Washington · 18053 days ago · 21 km deep · 35 km away
  5. 2.12 km E of Dash Point, Washington · 18054 days ago · 12 km deep · 44 km away
  6. 1.82 km NNE of Quilcene, Washington · 18058 days ago · 16 km deep · 32 km away
  7. 2.04 km N of White Center, Washington · 18060 days ago · 2 km deep · 40 km away
  8. 1.94 km NE of Bonney Lake, Washington · 18062 days ago · 24 km deep · 67 km away
  9. 2.1Washington · 18065 days ago · 17 km deep · 82 km away
  10. 2.2Washington · 18067 days ago · 19 km deep · 81 km away
  11. 2.42 km NNE of Bonney Lake, Washington · 18068 days ago · 18 km deep · 65 km away
  12. 2.24 km ENE of Bonney Lake, WA · 18070 days ago · 24 km deep · 68 km away
  13. 1.611 km NE of Snoqualmie, Washington · 18070 days ago · 13 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10843588. Read Tue, Sep 22, 2026, 9:20 PM UTC.