Washington earthquakes

M1.5 earthquake 15 km NNE of Ashford, Washington

A magnitude 1.5 earthquake struck 15 km NNE of Ashford, Washington on Thu, Aug 25, 1977, 10:54 PM PDT (05:54 UTC), 15 km (10 mi) below the surface.

A larger quake followed: M3.4 6 km SSE of Bucoda, 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1977-08-26 05:54:17 UTC
Depth
15.4 km (9.6 mi), shallow
Epicenter
46.882° N, 121.939° 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 0.5 km horizontally, 1.1 km in depth
Depth from
From location
Station coverage gap
154°
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: 24 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.516 km S of Skykomish, Washington · 17934 days ago · 3 km deep · 86 km away
  2. 1.939 km SE of Morton, Washington · 17933 days ago · -1 km deep · 66 km away
  3. 1.52 km NW of Snoqualmie, Washington · 17932 days ago · 25 km deep · 74 km away
  4. 1.811 km W of Packwood, Washington · 17931 days ago · -1 km deep · 30 km away
  5. 1.72 km ENE of Union Hill-Novelty Hill, Washington · 17926 days ago · 23 km deep · 90 km away
  6. 1.613 km SSW of South Cle Elum, Washington · 17924 days ago · 1 km deep · 75 km away
  7. 1.613 km NNE of Cliffdell, Washington · 17924 days ago · 7 km deep · 74 km away
  8. 1.74 km NW of Federal Way, Washington · 17923 days ago · 22 km deep · 61 km away
  9. 3.46 km SSE of Bucoda, Washington · 17921 days ago · 6 km deep · 69 km away
  10. 2.115 km NNE of Ashford, Washington · 17919 days ago · -1 km deep · 0 km away
  11. 1.56 km ESE of Lake Marcel-Stillwater, Washington · 17915 days ago · 16 km deep · 88 km away
  12. 2.06 km N of Mossyrock, Washington · 17912 days ago · 23 km deep · 52 km away
  13. 2.18 km NNE of Mossyrock, Washington · 17910 days ago · 20 km deep · 50 km away
  14. 1.74 km NE of North Bend, Washington · 17907 days ago · -1 km deep · 72 km away
  15. 1.63 km NE of Bonney Lake, Washington · 17906 days ago · 15 km deep · 39 km away
  16. 1.915 km NNE of Ashford, Washington · 17903 days ago · 4 km deep · 1 km away
  17. 1.914 km E of Wilkeson, Washington · 17899 days ago · 7 km deep · 25 km away
  18. 1.64 km WNW of Mercer Island, Washington · 17895 days ago · 38 km deep · 83 km away
  19. 1.81 km E of Enetai, Washington · 17890 days ago · 20 km deep · 92 km away
  20. 1.740 km SSE of Morton, Washington · 17887 days ago · 3 km deep · 75 km away
  21. 1.82 km NNE of Carnation, Washington · 17887 days ago · 22 km deep · 88 km away
  22. 1.62 km NW of White Center, Washington · 17884 days ago · 19 km deep · 79 km away
  23. 1.625 km ENE of Ashford, Washington · 17881 days ago · 0 km deep · 17 km away
  24. 2.10 km E of Riverton, Washington · 17880 days ago · 22 km deep · 72 km away

Before

  1. 1.717 km S of Skykomish, Washington · 17934 days ago · 3 km deep · 85 km away
  2. 1.917 km SE of Carbonado, Washington · 17935 days ago · 9 km deep · 10 km away
  3. 1.713 km SSW of South Cle Elum, Washington · 17937 days ago · 9 km deep · 73 km away
  4. 1.75 km NNW of Belfair, Washington · 17946 days ago · 22 km deep · 97 km away
  5. 1.52 km NNE of Bonney Lake, Washington · 17949 days ago · 12 km deep · 39 km away
  6. 1.55 km SE of Mineral, Washington · 17953 days ago · 19 km deep · 26 km away
  7. 1.933 km NE of Amboy, Washington · 17954 days ago · 1 km deep · 83 km away
  8. 2.13 km SSW of Redmond, Washington · 17956 days ago · 0 km deep · 86 km away
  9. 1.65 km S of Gorst, Washington · 17958 days ago · 22 km deep · 88 km away
  10. 2.02 km NNE of Duvall, Washington · 17959 days ago · 19 km deep · 97 km away
  11. 1.916 km WNW of Packwood, Washington · 17959 days ago · 0 km deep · 26 km away
  12. 2.013 km ENE of Ashford, Washington · 17960 days ago · 2 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10844518. Read Fri, Oct 2, 2026, 6:51 AM UTC.