Washington earthquakes

M1.7 earthquake 9 km NE of Snoqualmie, Washington

A magnitude 1.7 earthquake struck 9 km NE of Snoqualmie, Washington on Thu, Apr 18, 1985, 2:36 AM PST (10:36 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M1.8 16 km ESE of Verlot, Washington. This one was a foreshock.

Snoqualmie forecastMore in Washington

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), micro
Local time
UTC
1985-04-18 10:36:02 UTC
Depth
13.8 km (8.6 mi), shallow
Epicenter
47.601° N, 121.753° 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, 0.7 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
79°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 34 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 1.816 km ESE of Verlot, Washington · 15130 days ago · 4 km deep · 50 km away
  2. 1.90 km SE of Clyde Hill, Washington · 15127 days ago · 26 km deep · 34 km away
  3. 2.017 km SSE of Carbonado, Washington · 15126 days ago · 13 km deep · 76 km away
  4. 1.65 km NNW of Woods Creek, Washington · 15125 days ago · 15 km deep · 38 km away
  5. 1.74 km SSE of Monroe, Washington · 15125 days ago · -1 km deep · 28 km away
  6. 1.74 km SSW of Big Lake, Washington · 15124 days ago · 13 km deep · 93 km away
  7. 2.52 km SW of Browns Point, Washington · 15124 days ago · 57 km deep · 64 km away
  8. 3.04 km SSW of Big Lake, Washington · 15124 days ago · 17 km deep · 92 km away
  9. 2.61 km SSE of Enetai, Washington · 15123 days ago · 26 km deep · 63 km away
  10. 1.94 km SSW of Big Lake, Washington · 15120 days ago · 18 km deep · 93 km away
  11. 3.35 km SSW of Big Lake, Washington · 15120 days ago · 17 km deep · 92 km away
  12. 2.45 km SSW of Big Lake, Washington · 15120 days ago · 17 km deep · 92 km away
  13. 2.04 km NNW of Lake McMurray, Washington · 15120 days ago · 17 km deep · 92 km away
  14. 2.21 km NNW of Ames Lake, Washington · 15120 days ago · 26 km deep · 17 km away
  15. 1.65 km SE of Monroe, Washington · 15118 days ago · -1 km deep · 28 km away
  16. 2.04 km SSE of Seabeck, Washington · 15118 days ago · 22 km deep · 79 km away
  17. 2.84 km NW of Kingston, Washington · 15117 days ago · 22 km deep · 64 km away
  18. 2.03 km NW of Kingston, Washington · 15117 days ago · 21 km deep · 64 km away
  19. 2.24 km NW of Kingston, Washington · 15117 days ago · 21 km deep · 64 km away
  20. 1.93 km WSW of Wilderness Rim, Washington · 15115 days ago · 18 km deep · 19 km away
  21. 1.512 km S of South Cle Elum, Washington · 15112 days ago · 1 km deep · 85 km away
  22. 1.814 km NNE of Ashford, Washington · 15110 days ago · 6 km deep · 83 km away
  23. 1.523 km ENE of Ashford, Washington · 15107 days ago · 2 km deep · 83 km away
  24. 1.51 km NE of Riverton, Washington · 15099 days ago · 25 km deep · 41 km away
  25. 1.52 km W of Artondale, Washington · 15098 days ago · 24 km deep · 75 km away
  26. 1.54 km S of Big Lake, Washington · 15093 days ago · 15 km deep · 92 km away
  27. 1.6Washington · 15093 days ago · 14 km deep · 92 km away
  28. 1.716 km NNE of Ashford, Washington · 15084 days ago · 14 km deep · 79 km away
  29. 2.16 km NE of Lake Roesiger, Washington · 15084 days ago · 14 km deep · 49 km away
  30. 2.13 km SE of Lake Roesiger, Washington · 15080 days ago · 18 km deep · 41 km away
  31. 2.022 km ENE of Ashford, Washington · 15080 days ago · 1 km deep · 83 km away
  32. 1.63 km NE of Lake Marcel-Stillwater, Washington · 15077 days ago · 26 km deep · 15 km away
  33. 1.64 km ENE of Granite Falls, Washington · 15074 days ago · -1 km deep · 56 km away
  34. 3.14 km WSW of Wilderness Rim, Washington · 15073 days ago · 16 km deep · 19 km away

Before

  1. 1.53 km WNW of North Sultan, Washington · 15132 days ago · 0 km deep · 34 km away
  2. 1.90 km E of Clyde Hill, Washington · 15133 days ago · 23 km deep · 34 km away
  3. 2.25 km W of Shoreline, Washington · 15137 days ago · 18 km deep · 52 km away
  4. 1.70 km NW of Lake Roesiger, Washington · 15143 days ago · 13 km deep · 45 km away
  5. 1.90 km NW of Bellevue, Washington · 15144 days ago · 0 km deep · 34 km away
  6. 2.417 km SSE of Carbonado, Washington · 15144 days ago · 13 km deep · 76 km away
  7. 2.53 km SE of Swede Heaven, Washington · 15146 days ago · 0 km deep · 74 km away
  8. 3.36 km WSW of Lake Cavanaugh, Washington · 15150 days ago · 11 km deep · 83 km away
  9. 2.01 km SSE of Swede Heaven, Washington · 15152 days ago · 1 km deep · 75 km away
  10. 1.54 km SSW of Orting, Washington · 15153 days ago · 0 km deep · 69 km away
  11. 1.56 km ENE of Snoqualmie, Washington · 15155 days ago · -1 km deep · 5 km away
  12. 2.02 km SW of Bellevue, Washington · 15157 days ago · 8 km deep · 35 km away
  13. 2.71 km WSW of Bellevue, Washington · 15157 days ago · 2 km deep · 34 km away
  14. 2.634 km NNW of Leavenworth, Washington · 15157 days ago · 1 km deep · 74 km away
  15. 1.71 km SSE of Medina, Washington · 15160 days ago · 1 km deep · 35 km away
  16. 3.00 km SSW of Bellevue, Washington · 15160 days ago · 7 km deep · 34 km away
  17. 1.64 km WSW of Monroe, Washington · 15160 days ago · -1 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10187978. Read Tue, Sep 22, 2026, 7:43 AM UTC.