Washington earthquakes

M1.8 earthquake 1 km NW of Monroe, Washington

A magnitude 1.8 earthquake struck 1 km NW of Monroe, Washington on Tue, Apr 18, 1972, 3:55 PM PST (23:55 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.8 6 km ENE of Acme, 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
1.8 (md), micro
Local time
UTC
1972-04-18 23:55:56 UTC
Depth
18.0 km (11.2 mi), shallow
Epicenter
47.865° N, 121.991° 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 0.8 km horizontally, 2.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
155°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.86 km ENE of Acme, Washington · 19879 days ago · -1 km deep · 98 km away
  2. 1.54 km SE of Belfair, Washington · 19879 days ago · 19 km deep · 77 km away
  3. 2.00 km N of Artondale, Washington · 19877 days ago · 48 km deep · 78 km away
  4. 2.45 km S of Acme, Washington · 19874 days ago · 14 km deep · 91 km away
  5. 2.08 km SW of Seabeck, Washington · 19872 days ago · 42 km deep · 75 km away
  6. 1.82 km E of Lea Hill, Washington · 19871 days ago · 17 km deep · 61 km away
  7. 1.96 km NE of Lofall, Washington · 19871 days ago · 22 km deep · 46 km away
  8. 2.43 km WSW of Mount Vernon, Washington · 19869 days ago · 25 km deep · 67 km away
  9. 1.61 km ESE of Lake Marcel-Stillwater, Washington · 19869 days ago · 11 km deep · 21 km away
  10. 3.06 km E of Bainbridge Island, Washington · 19869 days ago · 23 km deep · 42 km away
  11. 1.54 km SE of Quilcene, Washington · 19868 days ago · 19 km deep · 64 km away
  12. 2.27 km N of Burlington, Washington · 19868 days ago · -1 km deep · 79 km away
  13. 2.43 km NNE of Enetai, Washington · 19867 days ago · 17 km deep · 52 km away
  14. 1.90 km W of Beaux Arts Village, Washington · 19866 days ago · 20 km deep · 35 km away
  15. 1.84 km NE of Lake McMurray, Washington · 19865 days ago · 18 km deep · 55 km away
  16. 2.50 km WSW of Beaux Arts Village, Washington · 19859 days ago · 19 km deep · 35 km away
  17. 2.012 km NE of North Bend, Washington · 19856 days ago · -1 km deep · 40 km away
  18. 2.23 km ESE of Klahanie, Washington · 19856 days ago · 15 km deep · 34 km away
  19. 1.77 km N of Belfair, Washington · 19850 days ago · 18 km deep · 75 km away
  20. 2.80 km S of Burien, Washington · 19848 days ago · 26 km deep · 52 km away
  21. 2.94 km WNW of Alger, Washington · 19848 days ago · 18 km deep · 90 km away
  22. 2.85 km NNW of Alger, Washington · 19847 days ago · 14 km deep · 93 km away
  23. 1.69 km ESE of Carbonado, Washington · 19847 days ago · 6 km deep · 91 km away
  24. 2.05 km NE of Lofall, Washington · 19847 days ago · 22 km deep · 46 km away
  25. 2.47 km NW of Belfair, Washington · 19846 days ago · 16 km deep · 80 km away
  26. 2.32 km WSW of Wilderness Rim, Washington · 19842 days ago · 18 km deep · 50 km away
  27. 2.22 km SSW of Orting, Washington · 19837 days ago · 12 km deep · 90 km away
  28. 2.80 km NNE of Inglewood-Finn Hill, Washington · 19835 days ago · 18 km deep · 24 km away
  29. 1.93 km W of Shoreline, Washington · 19835 days ago · 16 km deep · 32 km away
  30. 2.512 km SW of Snoqualmie Pass, Washington · 19831 days ago · 4 km deep · 73 km away
  31. 1.61 km ESE of Indianola, Washington · 19829 days ago · 19 km deep · 41 km away
  32. 3.32 km NNE of Duvall, Washington · 19827 days ago · 6 km deep · 11 km away
  33. 2.30 km NNE of Duvall, Washington · 19827 days ago · 2 km deep · 13 km away
  34. 1.7Puget Sound region, Washington · 19823 days ago · 23 km deep · 71 km away
  35. 1.51 km ESE of Keyport, Washington · 19823 days ago · 14 km deep · 49 km away
  36. 1.83 km SW of Home, Washington · 19821 days ago · 18 km deep · 91 km away
  37. 1.53 km ESE of Carnation, Washington · 19820 days ago · 22 km deep · 27 km away
  38. 2.71 km WSW of Beaux Arts Village, Washington · 19820 days ago · 20 km deep · 36 km away
  39. 2.22 km WNW of North Bend, Washington · 19819 days ago · 19 km deep · 42 km away

Before

  1. 1.95 km S of Port Ludlow, Washington · 19879 days ago · 30 km deep · 51 km away
  2. 1.91 km E of Clyde Hill, Washington · 19880 days ago · 2 km deep · 30 km away
  3. 1.80 km ESE of Burien, Washington · 19881 days ago · 26 km deep · 51 km away
  4. 2.13 km ENE of Des Moines, Washington · 19888 days ago · 10 km deep · 55 km away
  5. 1.62 km SE of Snohomish, Washington · 19894 days ago · 19 km deep · 7 km away
  6. 2.32 km SE of Snohomish, Washington · 19894 days ago · 24 km deep · 7 km away
  7. 3.02 km SSE of Snohomish, Washington · 19894 days ago · 22 km deep · 7 km away
  8. 1.62 km S of Vaughn, Washington · 19895 days ago · 17 km deep · 83 km away
  9. 1.51 km NE of Burien, Washington · 19900 days ago · 22 km deep · 50 km away
  10. 2.32 km S of Vaughn, Washington · 19908 days ago · 17 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10852938. Read Tue, Sep 22, 2026, 4:48 AM UTC.