Washington earthquakes

M1.8 earthquake 15 km E of Mattawa, Washington

A magnitude 1.8 earthquake struck 15 km E of Mattawa, Washington on Sun, Dec 13, 1987, 11:48 PM PST (07:48 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M1.9 17 km WSW of Othello, Washington. This one was a foreshock.

Mattawa 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
1987-12-14 07:48:35 UTC
Depth
17.4 km (10.8 mi), shallow
Epicenter
46.740° N, 119.698° 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 0.4 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
34°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.917 km WSW of Othello, Washington · 14156 days ago · 0 km deep · 25 km away
  2. 2.05 km SSW of Connell, Washington · 14154 days ago · 1 km deep · 64 km away
  3. 1.616 km WSW of Othello, Washington · 14151 days ago · 0 km deep · 26 km away
  4. 2.117 km WSW of Othello, Washington · 14150 days ago · 1 km deep · 25 km away
  5. 1.517 km SW of Othello, Washington · 14150 days ago · 2 km deep · 26 km away
  6. 1.516 km WSW of Othello, Washington · 14150 days ago · 0 km deep · 26 km away
  7. 1.717 km WSW of Othello, Washington · 14149 days ago · 0 km deep · 25 km away
  8. 2.219 km SW of Othello, Washington · 14145 days ago · 1 km deep · 25 km away
  9. 1.917 km WSW of Othello, Washington · 14143 days ago · 0 km deep · 25 km away
  10. 1.717 km WSW of Othello, Washington · 14141 days ago · 1 km deep · 25 km away
  11. 1.716 km WSW of Othello, Washington · 14139 days ago · 0 km deep · 26 km away
  12. 1.69 km SE of Bickleton, Washington · 14138 days ago · 8 km deep · 98 km away
  13. 1.516 km S of Prosser, Washington · 14135 days ago · 8 km deep · 76 km away
  14. 2.15 km SW of Connell, Washington · 14130 days ago · 2 km deep · 62 km away
  15. 2.415 km WSW of Othello, Washington · 14130 days ago · 0 km deep · 26 km away
  16. 2.616 km WSW of Othello, Washington · 14127 days ago · 0 km deep · 27 km away
  17. 2.016 km SW of Othello, Washington · 14127 days ago · 0 km deep · 26 km away
  18. 1.716 km SW of Othello, Washington · 14126 days ago · 0 km deep · 27 km away
  19. 1.519 km WSW of Othello, Washington · 14124 days ago · 0 km deep · 23 km away
  20. 1.73 km SSE of Grandview, Washington · 14123 days ago · 12 km deep · 59 km away
  21. 2.13 km SSE of Grandview, Washington · 14123 days ago · 12 km deep · 60 km away
  22. 1.53 km S of Grandview, Washington · 14123 days ago · 11 km deep · 60 km away
  23. 2.14 km NE of Prosser, Washington · 14120 days ago · -1 km deep · 57 km away
  24. 2.919 km WSW of Othello, Washington · 14112 days ago · 0 km deep · 23 km away
  25. 2.119 km WSW of Othello, Washington · 14112 days ago · 0 km deep · 23 km away
  26. 2.919 km WSW of Othello, Washington · 14111 days ago · 2 km deep · 23 km away
  27. 1.919 km WSW of Othello, Washington · 14111 days ago · 1 km deep · 23 km away
  28. 1.919 km WSW of Othello, Washington · 14110 days ago · 1 km deep · 23 km away
  29. 2.119 km WSW of Othello, Washington · 14108 days ago · 0 km deep · 23 km away
  30. 1.92 km NNE of Mesa, Washington · 14107 days ago · 5 km deep · 57 km away
  31. 2.35 km SW of Connell, Washington · 14103 days ago · 2 km deep · 62 km away
  32. 1.722 km WSW of Othello, Washington · 14103 days ago · 0 km deep · 20 km away

Before

  1. 1.817 km WSW of Othello, Washington · 14165 days ago · 1 km deep · 25 km away
  2. 1.97 km NNE of Richland, Washington · 14170 days ago · 0 km deep · 56 km away
  3. 2.217 km WSW of Othello, Washington · 14172 days ago · 0 km deep · 24 km away
  4. 1.67 km NNE of Richland, Washington · 14173 days ago · 0 km deep · 55 km away
  5. 4.33 km ENE of Cowiche, Washington · 14174 days ago · 17 km deep · 75 km away
  6. 4.12 km ENE of Cowiche, Washington · 14174 days ago · 17 km deep · 75 km away
  7. 1.518 km SW of Othello, Washington · 14175 days ago · 0 km deep · 26 km away
  8. 1.85 km NE of Kittitas, Washington · 14182 days ago · 7 km deep · 58 km away
  9. 1.77 km SSW of Desert Aire, Washington · 14184 days ago · 9 km deep · 24 km away
  10. 1.917 km WSW of Othello, Washington · 14184 days ago · 0 km deep · 25 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10228088. Read Tue, Sep 22, 2026, 9:13 AM UTC.