Washington earthquakes

M1.5 earthquake 17 km SSW of Skykomish, Washington

A magnitude 1.5 earthquake struck 17 km SSW of Skykomish, Washington on Sun, Aug 26, 1990, 5:46 PM PDT (00:46 UTC), 95 km (59 mi) below the surface.

A larger quake followed: M2.8 12 km ENE of Sunnyslope, 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
1990-08-27 00:46:31 UTC
Depth
94.8 km (58.9 mi), intermediate-depth
Epicenter
47.575° N, 121.486° 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 1.9 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
82°
Stations used
14

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 22 in the 30 days before it.

After

  1. 1.61 km ESE of Entiat, Washington · 13182 days ago · -1 km deep · 98 km away
  2. 2.02 km SSW of North Bend, Washington · 13182 days ago · -1 km deep · 26 km away
  3. 1.95 km WSW of Black Diamond, Washington · 13180 days ago · 20 km deep · 55 km away
  4. 1.64 km SSE of Bethel, Washington · 13179 days ago · 8 km deep · 86 km away
  5. 2.224 km N of Packwood, Washington · 13179 days ago · -1 km deep · 85 km away
  6. 2.54 km W of Burley, Washington · 13178 days ago · 22 km deep · 92 km away
  7. 1.85 km SSW of Fall City, Washington · 13178 days ago · 14 km deep · 33 km away
  8. 2.46 km W of Lake Cavanaugh, Washington · 13177 days ago · 8 km deep · 94 km away
  9. 2.14 km ESE of Cathcart, Washington · 13175 days ago · 15 km deep · 51 km away
  10. 1.717 km ENE of Ashford, Washington · 13170 days ago · -1 km deep · 87 km away
  11. 1.524 km ENE of Ashford, Washington · 13170 days ago · -2 km deep · 82 km away
  12. 1.70 km ESE of Cottage Lake, Washington · 13166 days ago · 12 km deep · 48 km away
  13. 2.7Washington · 13165 days ago · 20 km deep · 92 km away
  14. 1.525 km ENE of Ashford, Washington · 13162 days ago · -2 km deep · 80 km away
  15. 1.85 km WSW of Snoqualmie, Washington · 13161 days ago · 20 km deep · 31 km away
  16. 1.84 km WNW of Cliffdell, Washington · 13158 days ago · -1 km deep · 73 km away
  17. 1.60 km ENE of Mercer Island, Washington · 13153 days ago · 20 km deep · 54 km away
  18. 1.57 km NE of Duvall, Washington · 13148 days ago · 8 km deep · 39 km away
  19. 2.621 km ESE of Darrington, Washington · 13147 days ago · 0 km deep · 72 km away
  20. 1.51 km E of Clyde Hill, Washington · 13146 days ago · 24 km deep · 54 km away
  21. 1.83 km SW of Snoqualmie, Washington · 13140 days ago · 19 km deep · 29 km away
  22. 2.027 km ENE of Ashford, Washington · 13139 days ago · -2 km deep · 78 km away
  23. 1.640 km WNW of Granite Falls, Washington · 13134 days ago · 7 km deep · 81 km away
  24. 1.55 km NW of Federal Way, Washington · 13132 days ago · 18 km deep · 70 km away
  25. 2.812 km ENE of Sunnyslope, Washington · 13127 days ago · 11 km deep · 97 km away
  26. 2.62 km SW of Rocky Point, Washington · 13126 days ago · 18 km deep · 90 km away
  27. 1.724 km SE of Carbonado, Washington · 13125 days ago · -1 km deep · 74 km away

Before

  1. 1.723 km N of Packwood, Washington · 13185 days ago · 3 km deep · 86 km away
  2. 1.61 km S of Normandy Park, Washington · 13188 days ago · 15 km deep · 66 km away
  3. 1.812 km E of Carnation, Washington · 13193 days ago · -1 km deep · 21 km away
  4. 1.86 km W of Entiat, Washington · 13193 days ago · -1 km deep · 90 km away
  5. 1.83 km NNW of Kingston, Washington · 13193 days ago · 20 km deep · 82 km away
  6. 1.73 km E of Union Hill-Novelty Hill, Washington · 13193 days ago · 11 km deep · 38 km away
  7. 1.65 km NE of Bryant, Washington · 13194 days ago · 11 km deep · 91 km away
  8. 1.87 km SSE of Darrington, Washington · 13197 days ago · 4 km deep · 69 km away
  9. 1.73 km E of Granite Falls, Washington · 13197 days ago · 0 km deep · 66 km away
  10. 1.82 km WNW of Inglewood-Finn Hill, Washington · 13198 days ago · 21 km deep · 61 km away
  11. 1.58 km NW of Bangor Trident Base, Washington · 13199 days ago · 19 km deep · 99 km away
  12. 1.72 km SW of North Bend, Washington · 13200 days ago · -1 km deep · 26 km away
  13. 1.91 km ESE of Pacific, Washington · 13205 days ago · 10 km deep · 66 km away
  14. 1.89 km S of Carbonado, Washington · 13209 days ago · 12 km deep · 78 km away
  15. 1.539 km WNW of Granite Falls, Washington · 13210 days ago · 6 km deep · 79 km away
  16. 1.73 km N of Entiat, Washington · 13210 days ago · 2 km deep · 97 km away
  17. 1.715 km ENE of Skykomish, Washington · 13210 days ago · 1 km deep · 31 km away
  18. 2.03 km ENE of Bainbridge Island, Washington · 13211 days ago · 18 km deep · 74 km away
  19. 1.53 km N of May Creek, Washington · 13212 days ago · 10 km deep · 37 km away
  20. 2.33 km WSW of Kingston, Washington · 13212 days ago · 19 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10267143. Read Thu, Oct 1, 2026, 6:09 PM UTC.