Washington earthquakes

M1.6 earthquake 4 km WSW of Monroe, Washington

A magnitude 1.6 earthquake struck 4 km WSW of Monroe, Washington on Wed, Mar 20, 1985, 5:41 PM PST (01:41 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.0 0 km SSW of Bellevue, Washington. This one was a foreshock.

Monroe 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
1.6 (md), micro
Local time
UTC
1985-03-21 01:41:29 UTC
Depth
-0.6 km (-0.3 mi), shallow
Epicenter
47.840° N, 122.023° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
83°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 3.00 km SSW of Bellevue, Washington · 15161 days ago · 7 km deep · 29 km away
  2. 1.71 km SSE of Medina, Washington · 15160 days ago · 1 km deep · 29 km away
  3. 2.634 km NNW of Leavenworth, Washington · 15158 days ago · 1 km deep · 87 km away
  4. 1.59 km WNW of Ault Field, Washington · 15158 days ago · 48 km deep · 82 km away
  5. 2.71 km WSW of Bellevue, Washington · 15157 days ago · 2 km deep · 30 km away
  6. 2.02 km SW of Bellevue, Washington · 15157 days ago · 8 km deep · 31 km away
  7. 1.56 km ENE of Snoqualmie, Washington · 15156 days ago · -1 km deep · 38 km away
  8. 1.54 km SSW of Orting, Washington · 15154 days ago · 0 km deep · 88 km away
  9. 2.01 km SSE of Swede Heaven, Washington · 15152 days ago · 1 km deep · 53 km away
  10. 3.36 km WSW of Lake Cavanaugh, Washington · 15151 days ago · 11 km deep · 52 km away
  11. 2.53 km SE of Swede Heaven, Washington · 15146 days ago · 0 km deep · 53 km away
  12. 1.90 km NW of Bellevue, Washington · 15144 days ago · 0 km deep · 29 km away
  13. 1.70 km NW of Lake Roesiger, Washington · 15143 days ago · 13 km deep · 18 km away
  14. 2.25 km W of Shoreline, Washington · 15137 days ago · 18 km deep · 31 km away
  15. 1.90 km E of Clyde Hill, Washington · 15133 days ago · 23 km deep · 27 km away
  16. 1.53 km WNW of North Sultan, Washington · 15133 days ago · 0 km deep · 14 km away
  17. 1.79 km NE of Snoqualmie, Washington · 15132 days ago · 14 km deep · 33 km away
  18. 1.816 km ESE of Verlot, Washington · 15131 days ago · 4 km deep · 40 km away
  19. 1.66 km SSW of Acme, Washington · 15129 days ago · -1 km deep · 93 km away
  20. 1.90 km SE of Clyde Hill, Washington · 15128 days ago · 26 km deep · 28 km away
  21. 1.65 km NNW of Woods Creek, Washington · 15126 days ago · 15 km deep · 11 km away
  22. 1.74 km SSE of Monroe, Washington · 15126 days ago · -1 km deep · 6 km away
  23. 1.74 km SSW of Big Lake, Washington · 15125 days ago · 13 km deep · 61 km away
  24. 2.52 km SW of Browns Point, Washington · 15125 days ago · 57 km deep · 70 km away
  25. 3.04 km SSW of Big Lake, Washington · 15124 days ago · 17 km deep · 60 km away
  26. 2.61 km SSE of Enetai, Washington · 15123 days ago · 26 km deep · 52 km away
  27. 1.94 km SSW of Big Lake, Washington · 15121 days ago · 18 km deep · 61 km away
  28. 3.35 km SSW of Big Lake, Washington · 15121 days ago · 17 km deep · 60 km away
  29. 2.45 km SSW of Big Lake, Washington · 15121 days ago · 17 km deep · 60 km away
  30. 2.04 km NNW of Lake McMurray, Washington · 15121 days ago · 17 km deep · 60 km away
  31. 2.21 km NNW of Ames Lake, Washington · 15120 days ago · 26 km deep · 22 km away
  32. 1.65 km SE of Monroe, Washington · 15119 days ago · -1 km deep · 8 km away
  33. 2.04 km SSE of Seabeck, Washington · 15119 days ago · 22 km deep · 64 km away
  34. 2.84 km NW of Kingston, Washington · 15118 days ago · 22 km deep · 38 km away
  35. 2.03 km NW of Kingston, Washington · 15118 days ago · 21 km deep · 38 km away
  36. 2.24 km NW of Kingston, Washington · 15117 days ago · 21 km deep · 38 km away
  37. 1.93 km WSW of Wilderness Rim, Washington · 15115 days ago · 18 km deep · 48 km away

Before

  1. 3.52 km ENE of Rosedale, Washington · 15163 days ago · 53 km deep · 71 km away
  2. 1.91 km SE of Shoreline, Washington · 15164 days ago · 21 km deep · 25 km away
  3. 2.53 km SSW of Greenwater, Washington · 15164 days ago · 16 km deep · 83 km away
  4. 1.77 km ESE of Alger, Washington · 15171 days ago · 0 km deep · 85 km away
  5. 1.65 km E of Granite Falls, WA · 15174 days ago · -1 km deep · 29 km away
  6. 1.79 km NW of Belfair, Washington · 15174 days ago · 13 km deep · 77 km away
  7. 1.51 km SSE of Carnation, Washington · 15175 days ago · 11 km deep · 24 km away
  8. 3.13 km N of Bryant, Washington · 15176 days ago · 15 km deep · 49 km away
  9. 3.73 km E of Bethel, Washington · 15181 days ago · 47 km deep · 57 km away
  10. 2.21 km SSE of Freeland, Washington · 15184 days ago · 25 km deep · 41 km away
  11. 2.72 km ENE of Silvana, Washington · 15185 days ago · 4 km deep · 43 km away
  12. 1.57 km WSW of Port Ludlow, Washington · 15186 days ago · 53 km deep · 57 km away
  13. 1.84 km NNE of East Renton Highlands, Washington · 15188 days ago · 15 km deep · 36 km away
  14. 1.85 km SW of Wilderness Rim, Washington · 15189 days ago · 18 km deep · 49 km away
  15. 1.64 km N of Bryant, Washington · 15190 days ago · 14 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10188963. Read Tue, Sep 22, 2026, 2:16 PM UTC.