Washington earthquakes

M1.6 earthquake 9 km NE of Tanner, Washington

A magnitude 1.6 earthquake struck 9 km NE of Tanner, Washington on Thu, Nov 20, 1975, 4:12 PM PST (00:12 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M1.7 2 km NE of Monroe, 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
1.6 (md), micro
Local time
UTC
1975-11-21 00:12:16 UTC
Depth
18.3 km (11.4 mi), shallow
Epicenter
47.538° N, 121.663° 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 6.9 km horizontally, 5.9 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
195°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.72 km NE of Monroe, Washington · 18568 days ago · 21 km deep · 43 km away
  2. 1.96 km ESE of Maplewood, Washington · 18567 days ago · 16 km deep · 64 km away
  3. 1.94 km SW of Snoqualmie, Washington · 18567 days ago · 15 km deep · 16 km away
  4. 1.71 km NE of Lake Marcel-Stillwater, Washington · 18564 days ago · 26 km deep · 25 km away
  5. 2.06 km N of Kingston, Washington · 18563 days ago · 10 km deep · 71 km away
  6. 2.11 km WSW of Gig Harbor, Washington · 18562 days ago · 33 km deep · 75 km away
  7. 2.23 km E of Lake Roesiger, Washington · 18554 days ago · 8 km deep · 52 km away
  8. 2.05 km NNW of Bainbridge Island, Washington · 18554 days ago · 19 km deep · 69 km away
  9. 1.72 km SSW of Kirkland, Washington · 18553 days ago · 11 km deep · 44 km away
  10. 1.72 km SSW of Union Hill-Novelty Hill, Washington · 18549 days ago · 2 km deep · 32 km away
  11. 1.82 km NNW of Manchester, Washington · 18545 days ago · 16 km deep · 67 km away
  12. 1.84 km SSW of Fall City, Washington · 18543 days ago · 14 km deep · 19 km away
  13. 1.52 km WNW of North Bend, Washington · 18542 days ago · -1 km deep · 12 km away
  14. 1.81 km W of Bryn Mawr-Skyway, Washington · 18536 days ago · 22 km deep · 45 km away
  15. 1.914 km ESE of Ashford, Washington · 18535 days ago · 5 km deep · 95 km away
  16. 1.61 km ESE of Ravensdale, Washington · 18534 days ago · 18 km deep · 31 km away
  17. 2.112 km ESE of Ashford, Washington · 18534 days ago · 4 km deep · 94 km away
  18. 2.41 km SE of Esperance, Washington · 18531 days ago · 22 km deep · 57 km away
  19. 2.55 km E of Longbranch, Washington · 18530 days ago · 41 km deep · 85 km away
  20. 1.92 km S of Ravensdale, Washington · 18527 days ago · 18 km deep · 33 km away
  21. 1.61 km WSW of Roosevelt, Washington · 18525 days ago · 14 km deep · 47 km away
  22. 1.92 km SE of Shoreline, Washington · 18525 days ago · 18 km deep · 53 km away
  23. 2.11 km NNE of Bellevue, Washington · 18524 days ago · 26 km deep · 41 km away
  24. 3.33 km SE of Bethel, Washington · 18524 days ago · 42 km deep · 71 km away
  25. 1.815 km ESE of Verlot, Washington · 18523 days ago · 6 km deep · 56 km away
  26. 1.62 km SW of Poulsbo, Washington · 18522 days ago · 16 km deep · 78 km away
  27. 1.714 km SE of Verlot, Washington · 18522 days ago · 3 km deep · 53 km away
  28. 2.45 km SW of Lake Cavanaugh, Washington · 18517 days ago · 9 km deep · 90 km away
  29. 2.16 km WSW of Lake Cavanaugh, Washington · 18517 days ago · 4 km deep · 91 km away

Before

  1. 1.72 km WSW of Monroe, Washington · 18569 days ago · -1 km deep · 43 km away
  2. 1.814 km ESE of Verlot, Washington · 18570 days ago · 8 km deep · 56 km away
  3. 1.52 km SW of Burley, Washington · 18573 days ago · 19 km deep · 76 km away
  4. 2.11 km ENE of Lake Marcel-Stillwater, Washington · 18574 days ago · 6 km deep · 25 km away
  5. 2.52 km NNE of Riverton, Washington · 18577 days ago · 27 km deep · 47 km away
  6. 1.62 km SSE of Hansville, Washington · 18578 days ago · 1 km deep · 77 km away
  7. 2.93 km SSE of Lake Roesiger, Washington · 18585 days ago · 17 km deep · 50 km away
  8. 1.53 km NNE of Verlot, Washington · 18588 days ago · 12 km deep · 65 km away
  9. 1.715 km W of Entiat, Washington · 18589 days ago · 0 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10862228. Read Wed, Sep 23, 2026, 5:06 AM UTC.