Washington earthquakes

M2.1 earthquake 5 km S of Cowiche, Washington

A magnitude 2.1 earthquake struck 5 km S of Cowiche, Washington on Wed, Sep 20, 2006, 12:42 PM PDT (19:42 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.5 27 km NNE of Packwood, Washington. This one was a foreshock.

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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
2.1 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2006-09-20 19:42:48 UTC
Depth
0.2 km (0.1 mi), shallow
Epicenter
46.617° N, 120.713° 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 1.9 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
136°
Stations used
8

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 8 in the 30 days before it.

After

  1. 4.527 km NNE of Packwood, Washington · 7302 days ago · 2 km deep · 72 km away · felt by 1,294
  2. 2.527 km N of Packwood, Washington · 7302 days ago · 3 km deep · 72 km away
  3. 1.728 km NNE of Packwood, Washington · 7302 days ago · 4 km deep · 72 km away
  4. 2.828 km NNE of Packwood, Washington · 7302 days ago · 3 km deep · 72 km away
  5. 1.712 km SW of Royal City, Washington · 7302 days ago · 0 km deep · 77 km away
  6. 1.927 km NNE of Packwood, Washington · 7302 days ago · 3 km deep · 72 km away
  7. 1.627 km N of Packwood, Washington · 7302 days ago · 3 km deep · 73 km away
  8. 1.528 km NNE of Packwood, Washington · 7302 days ago · 3 km deep · 72 km away
  9. 1.727 km NNE of Packwood, Washington · 7301 days ago · 3 km deep · 71 km away
  10. 1.628 km N of Packwood, Washington · 7300 days ago · 3 km deep · 73 km away
  11. 1.627 km N of Packwood, Washington · 7298 days ago · 3 km deep · 73 km away
  12. 2.627 km NNE of Packwood, Washington · 7296 days ago · 4 km deep · 71 km away
  13. 2.727 km NNE of Packwood, Washington · 7296 days ago · 3 km deep · 72 km away
  14. 1.712 km ESE of Ashford, Washington · 7293 days ago · 3 km deep · 90 km away
  15. 1.727 km NNE of Packwood, Washington · 7289 days ago · 4 km deep · 72 km away
  16. 1.828 km N of Packwood, Washington · 7287 days ago · 4 km deep · 73 km away
  17. 1.927 km NNE of Packwood, Washington · 7283 days ago · -1 km deep · 72 km away
  18. 1.628 km NNE of Packwood, Washington · 7276 days ago · 5 km deep · 72 km away
  19. 1.824 km ENE of Ashford, Washington · 7275 days ago · -2 km deep · 82 km away
  20. 1.728 km N of Packwood, Washington · 7274 days ago · -2 km deep · 73 km away
  21. 2.028 km NNE of Packwood, Washington · 7274 days ago · -1 km deep · 72 km away
  22. 1.628 km N of Packwood, Washington · 7270 days ago · 2 km deep · 73 km away
  23. 2.128 km N of Packwood, Washington · 7270 days ago · 4 km deep · 73 km away
  24. 1.528 km NNE of Packwood, Washington · 7267 days ago · -1 km deep · 72 km away
  25. 1.615 km WNW of Mattawa, Washington · 7265 days ago · 11 km deep · 51 km away
  26. 2.027 km NNE of Packwood, Washington · 7264 days ago · -2 km deep · 65 km away

Before

  1. 1.57 km N of Greenwater, Washington · 7322 days ago · 11 km deep · 97 km away
  2. 2.112 km WSW of Packwood, Washington · 7323 days ago · 2 km deep · 84 km away
  3. 2.71 km SE of Selah, Washington · 7328 days ago · -1 km deep · 15 km away
  4. 1.518 km SSE of Carbonado, Washington · 7330 days ago · 4 km deep · 99 km away
  5. 1.726 km ENE of Ashford, Washington · 7339 days ago · -2 km deep · 81 km away
  6. 1.722 km ENE of Ashford, Washington · 7340 days ago · -2 km deep · 84 km away
  7. 1.818 km ENE of Kittitas, Washington · 7342 days ago · 0 km deep · 62 km away
  8. 1.711 km NE of Ashford, Washington · 7343 days ago · 7 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10705213. Read Mon, Oct 5, 2026, 6:21 AM UTC.