Washington earthquakes

M4.3 earthquake 3 km ENE of Cowiche, Washington

A magnitude 4.3 earthquake struck 3 km ENE of Cowiche, Washington on Wed, Dec 2, 1987, 1:02 AM PST (09:02 UTC), 17 km (11 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.3 (md), light
Local time
UTC
1987-12-02 09:02:24 UTC
Depth
17.1 km (10.6 mi), shallow
Epicenter
46.679° N, 120.673° 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 0.9 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
35°
Stations used
57

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.217 km WSW of Othello, Washington · 14172 days ago · 0 km deep · 99 km away
  2. 1.817 km WSW of Othello, Washington · 14165 days ago · 1 km deep · 100 km away
  3. 1.815 km E of Mattawa, Washington · 14162 days ago · 17 km deep · 75 km away
  4. 1.917 km WSW of Othello, Washington · 14156 days ago · 0 km deep · 100 km away
  5. 2.117 km WSW of Othello, Washington · 14150 days ago · 1 km deep · 100 km away
  6. 1.717 km WSW of Othello, Washington · 14149 days ago · 0 km deep · 100 km away
  7. 2.219 km SW of Othello, Washington · 14146 days ago · 1 km deep · 99 km away
  8. 1.917 km WSW of Othello, Washington · 14143 days ago · 0 km deep · 99 km away
  9. 1.717 km WSW of Othello, Washington · 14141 days ago · 1 km deep · 100 km away
  10. 1.69 km SE of Bickleton, Washington · 14138 days ago · 8 km deep · 90 km away
  11. 1.516 km S of Prosser, Washington · 14135 days ago · 8 km deep · 99 km away
  12. 2.723 km ENE of Ashford, Washington · 14130 days ago · 1 km deep · 84 km away
  13. 1.922 km ENE of Ashford, Washington · 14130 days ago · 0 km deep · 85 km away
  14. 1.519 km WSW of Othello, Washington · 14124 days ago · 0 km deep · 97 km away
  15. 1.510 km NE of Ashford, Washington · 14123 days ago · 10 km deep · 97 km away
  16. 1.73 km SSE of Grandview, Washington · 14123 days ago · 12 km deep · 79 km away
  17. 2.13 km SSE of Grandview, Washington · 14123 days ago · 12 km deep · 78 km away
  18. 1.53 km S of Grandview, Washington · 14123 days ago · 11 km deep · 79 km away
  19. 2.14 km NE of Prosser, Washington · 14120 days ago · -1 km deep · 88 km away

Before

  1. 4.12 km ENE of Cowiche, Washington · 14174 days ago · 17 km deep · 1 km away
  2. 1.85 km NE of Kittitas, Washington · 14182 days ago · 7 km deep · 44 km away
  3. 1.77 km SSW of Desert Aire, Washington · 14184 days ago · 9 km deep · 55 km away
  4. 1.917 km WSW of Othello, Washington · 14184 days ago · 0 km deep · 99 km away
  5. 1.522 km SSE of Packwood, Washington · 14190 days ago · -1 km deep · 78 km away
  6. 2.05 km WNW of Quincy, Washington · 14203 days ago · 5 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10226598 (also filed as usp0003av6). Read Tue, Sep 22, 2026, 10:59 AM UTC.