Washington earthquakes

M1.5 earthquake 9 km WNW of Ault Field, Washington

A magnitude 1.5 earthquake struck 9 km WNW of Ault Field, Washington on Sat, Mar 23, 1985, 2:25 PM PST (22:25 UTC), 48 km (30 mi) below the surface.

A larger quake followed: M2.7 1 km WSW of Bellevue, Washington. This one was a foreshock.

Ault Field 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
1.5 (md), micro
Local time
UTC
1985-03-23 22:25:28 UTC
Depth
48.0 km (29.8 mi), shallow
Epicenter
48.370° N, 122.789° 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
±0.13
Depth from
From location
Station coverage gap
50°
Stations used
19

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 14 in the 30 days before it.

After

  1. 2.71 km WSW of Bellevue, Washington · 15158 days ago · 2 km deep · 95 km away
  2. 2.02 km SW of Bellevue, Washington · 15158 days ago · 8 km deep · 96 km away
  3. 2.01 km SSE of Swede Heaven, Washington · 15153 days ago · 1 km deep · 79 km away
  4. 3.36 km WSW of Lake Cavanaugh, Washington · 15152 days ago · 11 km deep · 51 km away
  5. 2.53 km SE of Swede Heaven, Washington · 15147 days ago · 0 km deep · 81 km away
  6. 1.90 km NW of Bellevue, Washington · 15145 days ago · 0 km deep · 95 km away
  7. 1.70 km NW of Lake Roesiger, Washington · 15144 days ago · 13 km deep · 76 km away
  8. 1.711 km SSE of Point Roberts, Washington · 15142 days ago · 56 km deep · 61 km away
  9. 2.25 km W of Shoreline, Washington · 15138 days ago · 18 km deep · 75 km away
  10. 2.55 km E of Deming, Washington · 15135 days ago · 3 km deep · 70 km away
  11. 1.90 km E of Clyde Hill, Washington · 15134 days ago · 23 km deep · 93 km away
  12. 1.53 km WNW of North Sultan, Washington · 15134 days ago · 0 km deep · 87 km away
  13. 1.816 km ESE of Verlot, Washington · 15132 days ago · 4 km deep · 97 km away
  14. 1.66 km SSW of Acme, Washington · 15130 days ago · -1 km deep · 52 km away
  15. 1.90 km SE of Clyde Hill, Washington · 15129 days ago · 26 km deep · 93 km away
  16. 1.96 km ENE of Deming, Washington · 15128 days ago · 10 km deep · 71 km away
  17. 1.65 km NNW of Woods Creek, Washington · 15127 days ago · 15 km deep · 80 km away
  18. 1.74 km SSE of Monroe, Washington · 15127 days ago · -1 km deep · 88 km away
  19. 1.74 km SSW of Big Lake, Washington · 15126 days ago · 13 km deep · 40 km away
  20. 3.04 km SSW of Big Lake, Washington · 15125 days ago · 17 km deep · 39 km away
  21. 2.61 km SSE of Enetai, Washington · 15124 days ago · 26 km deep · 90 km away
  22. 1.94 km SSW of Big Lake, Washington · 15122 days ago · 18 km deep · 39 km away
  23. 3.35 km SSW of Big Lake, Washington · 15122 days ago · 17 km deep · 39 km away
  24. 2.45 km SSW of Big Lake, Washington · 15122 days ago · 17 km deep · 39 km away
  25. 2.04 km NNW of Lake McMurray, Washington · 15122 days ago · 17 km deep · 39 km away
  26. 1.65 km SE of Monroe, Washington · 15120 days ago · -1 km deep · 89 km away
  27. 2.04 km SSE of Seabeck, Washington · 15120 days ago · 22 km deep · 85 km away
  28. 2.84 km NW of Kingston, Washington · 15119 days ago · 22 km deep · 63 km away
  29. 2.03 km NW of Kingston, Washington · 15119 days ago · 21 km deep · 64 km away
  30. 2.24 km NW of Kingston, Washington · 15118 days ago · 21 km deep · 63 km away
  31. 1.97 km E of Deming, Washington · 15115 days ago · 9 km deep · 72 km away
  32. 1.55 km E of Deming, Washington · 15114 days ago · 5 km deep · 70 km away
  33. 1.86 km S of Kendall, Washington · 15113 days ago · 3 km deep · 73 km away
  34. 2.25 km ENE of Deming, Washington · 15112 days ago · 0 km deep · 71 km away
  35. 2.614 km E of North Saanich, Canada · 15107 days ago · 21 km deep · 48 km away
  36. 1.88 km E of Deming, Washington · 15106 days ago · 14 km deep · 72 km away
  37. 2.820 km WSW of Brinnon, Washington · 15100 days ago · 46 km deep · 90 km away

Before

  1. 1.71 km SSE of Medina, Washington · 15161 days ago · 1 km deep · 94 km away
  2. 3.00 km SSW of Bellevue, Washington · 15162 days ago · 7 km deep · 95 km away
  3. 1.64 km WSW of Monroe, Washington · 15162 days ago · -1 km deep · 82 km away
  4. 1.98 km ENE of Ferndale, Washington · 15162 days ago · 13 km deep · 60 km away
  5. 1.91 km SE of Shoreline, Washington · 15165 days ago · 21 km deep · 77 km away
  6. 1.77 km ESE of Alger, Washington · 15172 days ago · 0 km deep · 46 km away
  7. 1.65 km E of Granite Falls, WA · 15175 days ago · -1 km deep · 73 km away
  8. 1.79 km NW of Belfair, Washington · 15175 days ago · 13 km deep · 97 km away
  9. 1.89 km S of Birch Bay, Washington · 15176 days ago · 66 km deep · 51 km away
  10. 3.13 km N of Bryant, Washington · 15177 days ago · 15 km deep · 48 km away
  11. 3.73 km E of Bethel, Washington · 15182 days ago · 47 km deep · 99 km away
  12. 2.21 km SSE of Freeland, Washington · 15185 days ago · 25 km deep · 46 km away
  13. 2.72 km ENE of Silvana, Washington · 15186 days ago · 4 km deep · 46 km away
  14. 1.57 km WSW of Port Ludlow, Washington · 15187 days ago · 53 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10189513. Read Wed, Sep 23, 2026, 2:40 PM UTC.