Washington earthquakes

M2.1 earthquake 6 km S of Mill Plain, Washington

A magnitude 2.1 earthquake struck 6 km S of Mill Plain, Washington on Thu, Apr 19, 1990, 2:38 PM PDT (21:38 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.0 23 km SW of Westport, Oregon. This one was a foreshock.

Mill Plain 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
2.1 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-04-19 21:38:09 UTC
Depth
15.0 km (9.3 mi), shallow
Epicenter
45.587° N, 122.483° 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 1.8 km horizontally, 2.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
94°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.837 km NNE of Amboy, Washington · 13307 days ago · -2 km deep · 72 km away
  2. 1.538 km NNE of Amboy, Washington · 13305 days ago · -2 km deep · 72 km away
  3. 2.138 km NNE of Amboy, Washington · 13302 days ago · 2 km deep · 72 km away
  4. 2.237 km NNE of Amboy, Washington · 13299 days ago · 3 km deep · 72 km away
  5. 2.337 km NNE of Amboy, Washington · 13299 days ago · 3 km deep · 72 km away
  6. 1.538 km NNE of Amboy, Washington · 13290 days ago · -2 km deep · 72 km away
  7. 2.913 km SSW of Morton, Washington · 13285 days ago · 18 km deep · 96 km away
  8. 2.224 km S of Morton, Washington · 13283 days ago · 3 km deep · 86 km away
  9. 1.823 km S of Morton, Washington · 13278 days ago · 11 km deep · 86 km away
  10. 1.838 km NNE of Amboy, Washington · 13277 days ago · -1 km deep · 72 km away
  11. 1.98 km N of Newberg, Oregon · 13277 days ago · 23 km deep · 43 km away
  12. 2.28 km NNE of Government Camp, Oregon · 13275 days ago · 2 km deep · 66 km away
  13. 1.737 km NNE of Amboy, Washington · 13274 days ago · -2 km deep · 72 km away
  14. 1.838 km NNE of Amboy, Washington · 13273 days ago · -2 km deep · 72 km away
  15. 1.738 km NNE of Amboy, Washington · 13272 days ago · -2 km deep · 72 km away
  16. 1.738 km NNE of Amboy, Washington · 13272 days ago · -1 km deep · 72 km away
  17. 1.74 km E of Carson, Washington · 13270 days ago · 4 km deep · 59 km away
  18. 1.94 km E of Carson, Washington · 13270 days ago · 4 km deep · 58 km away
  19. 2.0Washington · 13270 days ago · 0 km deep · 72 km away
  20. 1.526 km S of Morton, Washington · 13264 days ago · 8 km deep · 84 km away
  21. 1.68 km SSE of Scotts Mills, Oregon · 13263 days ago · 25 km deep · 70 km away
  22. 1.737 km NNE of Amboy, Washington · 13258 days ago · -1 km deep · 72 km away
  23. 1.737 km NNE of Amboy, Washington · 13255 days ago · 2 km deep · 72 km away
  24. 3.023 km SW of Westport, Oregon · 13254 days ago · 20 km deep · 96 km away

Before

  1. 1.814 km SE of Mossyrock, Washington · 13318 days ago · 17 km deep · 93 km away
  2. 1.838 km NNE of Amboy, Washington · 13318 days ago · -2 km deep · 72 km away
  3. 3.125 km E of Tillamook, Oregon · 13327 days ago · 42 km deep · 82 km away
  4. 2.637 km NNE of Amboy, Washington · 13328 days ago · -2 km deep · 72 km away
  5. 1.538 km NNE of Amboy, Washington · 13330 days ago · 3 km deep · 72 km away
  6. 1.70 km SW of Garden Home-Whitford, Oregon · 13333 days ago · 21 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10260413. Read Thu, Oct 1, 2026, 2:08 PM UTC.