Washington earthquakes

M1.7 earthquake 8 km NNW of Carson, Washington

A magnitude 1.7 earthquake struck 8 km NNW of Carson, Washington on Fri, Nov 21, 1986, 6:01 PM PST (02:01 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M1.8 1 km NE of North Bonneville, Washington. This one was a foreshock.

Carson 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
1.7 (md), micro
Local time
UTC
1986-11-22 02:01:34 UTC
Depth
6.7 km (4.2 mi), shallow
Epicenter
45.800° N, 121.860° 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, 0.7 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
38°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 44 in the 30 days before it.

After

  1. 1.641 km SSE of Morton, Washington · 14534 days ago · 5 km deep · 49 km away
  2. 1.734 km N of Amboy, WA · 14530 days ago · 6 km deep · 64 km away
  3. 1.63 km ESE of Woodland, Washington · 14528 days ago · 16 km deep · 66 km away
  4. 1.81 km NE of North Bonneville, Washington · 14522 days ago · 3 km deep · 18 km away
  5. 2.24 km SSE of Sandy, Oregon · 14519 days ago · 19 km deep · 57 km away

Before

  1. 1.519 km W of White Swan, Washington · 14564 days ago · -1 km deep · 92 km away
  2. 2.238 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 52 km away
  3. 1.738 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  4. 2.138 km NNE of Amboy, Washington · 14578 days ago · -2 km deep · 51 km away
  5. 1.538 km NNE of Amboy, Washington · 14578 days ago · -2 km deep · 51 km away
  6. 1.838 km NNE of Amboy, Washington · 14578 days ago · -2 km deep · 52 km away
  7. 2.538 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  8. 2.237 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  9. 2.438 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 52 km away
  10. 1.838 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  11. 1.838 km NNE of Amboy, Washington · 14578 days ago · -2 km deep · 51 km away
  12. 2.037 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  13. 2.637 km NNE of Amboy, Washington · 14578 days ago · -2 km deep · 51 km away
  14. 1.638 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  15. 1.837 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  16. 2.837 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  17. 2.038 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  18. 2.137 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  19. 1.938 km NNE of Amboy, Washington · 14578 days ago · -1 km deep · 51 km away
  20. 2.138 km NNE of Amboy, Washington · 14578 days ago · -2 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10215353. Read Tue, Sep 22, 2026, 11:32 AM UTC.