Washington earthquakes

M2.4 earthquake 5 km ESE of Black Diamond, Washington

A magnitude 2.4 earthquake struck 5 km ESE of Black Diamond, Washington on Mon, Feb 3, 1986, 2:54 AM PST (10:54 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M2.9 4 km NNE of Ruston, Washington. This one was a foreshock.

Black Diamond 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
2.4 (md), micro
Local time
UTC
1986-02-03 10:54:58 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
47.285° N, 121.940° 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 0.6 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
45°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 1.511 km NNE of North Sultan, Washington · 14841 days ago · -1 km deep · 78 km away
  2. 1.713 km WNW of Leavenworth, Washington · 14837 days ago · 12 km deep · 92 km away
  3. 2.112 km ESE of Tanner, Washington · 14836 days ago · 10 km deep · 33 km away
  4. 1.53 km N of Lake Marcel-Stillwater, Washington · 14835 days ago · 21 km deep · 49 km away
  5. 1.83 km SW of Bainbridge Island, Washington · 14834 days ago · 19 km deep · 58 km away
  6. 2.03 km NNW of White Center, Washington · 14834 days ago · 21 km deep · 44 km away
  7. 2.10 km WNW of Normandy Park, Washington · 14827 days ago · 17 km deep · 35 km away
  8. 1.63 km E of Granite Falls, Washington · 14823 days ago · -1 km deep · 89 km away
  9. 1.70 km NNE of Normandy Park, Washington · 14823 days ago · 18 km deep · 35 km away
  10. 1.74 km SW of Seattle, Washington · 14822 days ago · 7 km deep · 46 km away
  11. 1.511 km SE of Greenwater, Washington · 14817 days ago · 6 km deep · 37 km away
  12. 2.13 km SSE of Klahanie, Washington · 14814 days ago · 15 km deep · 29 km away
  13. 2.04 km NE of Snoqualmie, Washington · 14813 days ago · 10 km deep · 32 km away
  14. 1.74 km E of Lake Marcel-Stillwater, Washington · 14809 days ago · 17 km deep · 46 km away
  15. 2.03 km ESE of Key Center, Washington · 14809 days ago · 13 km deep · 58 km away
  16. 2.94 km NNE of Ruston, Washington · 14806 days ago · 7 km deep · 42 km away
  17. 1.95 km SW of La Grande, Washington · 14802 days ago · -1 km deep · 63 km away
  18. 1.92 km SE of Buckley, Washington · 14793 days ago · 10 km deep · 16 km away
  19. 1.86 km SSW of Morton, Washington · 14793 days ago · 19 km deep · 91 km away
  20. 1.6Washington · 14791 days ago · 4 km deep · 72 km away
  21. 1.63 km WNW of Picnic Point, Washington · 14790 days ago · 9 km deep · 75 km away
  22. 1.77 km SSW of Snoqualmie Pass, Washington · 14789 days ago · 13 km deep · 37 km away
  23. 1.83 km ENE of East Renton Highlands, Washington · 14788 days ago · 0 km deep · 26 km away
  24. 2.24 km ENE of Carnation, Washington · 14787 days ago · 17 km deep · 43 km away
  25. 2.40 km ESE of Clyde Hill, Washington · 14785 days ago · 24 km deep · 43 km away
  26. 1.53 km WNW of Ashford, Washington · 14785 days ago · 25 km deep · 58 km away

Before

  1. 1.77 km ESE of Belfair, WA · 14845 days ago · 19 km deep · 62 km away
  2. 1.96 km ENE of Verlot, Washington · 14845 days ago · 14 km deep · 94 km away
  3. 1.52 km WNW of East Hill-Meridian, Washington · 14853 days ago · 40 km deep · 25 km away
  4. 1.55 km E of Granite Falls, Washington · 14855 days ago · -1 km deep · 90 km away
  5. 1.68 km NE of Tanner, Washington · 14855 days ago · -1 km deep · 34 km away
  6. 2.45 km SW of Hansville, Washington · 14855 days ago · 17 km deep · 83 km away
  7. 2.27 km NNW of Kingston, Washington · 14856 days ago · 49 km deep · 78 km away
  8. 1.90 km ENE of Clyde Hill, Washington · 14858 days ago · 24 km deep · 44 km away
  9. 1.84 km NW of Skykomish, Washington · 14861 days ago · -1 km deep · 65 km away
  10. 1.73 km ESE of Indianola, Washington · 14861 days ago · 22 km deep · 64 km away
  11. 2.87 km ESE of Verlot, Washington · 14863 days ago · 1 km deep · 90 km away
  12. 2.18 km ESE of Verlot, Washington · 14863 days ago · 4 km deep · 90 km away
  13. 1.613 km SSW of Thorp, Washington · 14864 days ago · 6 km deep · 97 km away
  14. 1.99 km NNW of Belfair, Washington · 14866 days ago · 14 km deep · 74 km away
  15. 1.78 km ESE of Verlot, Washington · 14870 days ago · 1 km deep · 90 km away
  16. 1.79 km E of Verlot, Washington · 14870 days ago · 3 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10201238. Read Tue, Sep 22, 2026, 10:26 PM UTC.