Washington earthquakes

M2.3 earthquake 10 km ESE of Tanner, Washington

A magnitude 2.3 earthquake struck 10 km ESE of Tanner, Washington on Tue, Aug 17, 1971, 7:53 AM PDT (14:53 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.5 0 km ESE of Mercer Island, Washington. This one was a foreshock.

Tanner 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
2.3 (md), micro
Local time
UTC
1971-08-17 14:53:11 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
47.448° N, 121.616° 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 2.1 km horizontally, 2.6 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
249°, poorly surrounded by stations
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.02 km SSE of Des Moines, Washington · 20131 days ago · 16 km deep · 53 km away
  2. 1.77 km SE of Snoqualmie Pass, Washington · 20124 days ago · 0 km deep · 25 km away
  3. 2.55 km NE of Ashford, Washington · 20123 days ago · 8 km deep · 77 km away
  4. 1.87 km SE of Snoqualmie Pass, Washington · 20122 days ago · 0 km deep · 25 km away
  5. 2.61 km SE of Burley, Washington · 20118 days ago · 15 km deep · 76 km away
  6. 2.14 km NE of Ashford, Washington · 20111 days ago · 9 km deep · 79 km away
  7. 2.75 km NE of Woods Creek, Washington · 20109 days ago · 18 km deep · 55 km away
  8. 3.50 km ESE of Mercer Island, Washington · 20108 days ago · 20 km deep · 47 km away
  9. 1.92 km SE of Lake Marcel-Stillwater, Washington · 20108 days ago · 23 km deep · 32 km away
  10. 2.01 km NNE of Mercer Island, Washington · 20108 days ago · 20 km deep · 47 km away
  11. 2.30 km NW of Beaux Arts Village, Washington · 20107 days ago · 21 km deep · 47 km away
  12. 2.43 km E of Pacific, Washington · 20105 days ago · 14 km deep · 48 km away
  13. 1.94 km NNE of Seattle, Washington · 20098 days ago · 19 km deep · 57 km away
  14. 2.24 km SE of Riverbend, Washington · 20096 days ago · -1 km deep · 7 km away
  15. 1.70 km NNE of Beaux Arts Village, Washington · 20085 days ago · 20 km deep · 46 km away
  16. 2.30 km NE of Mercer Island, Washington · 20084 days ago · 20 km deep · 47 km away
  17. 1.80 km NE of Beaux Arts Village, Washington · 20084 days ago · 20 km deep · 46 km away
  18. 2.1Washington · 20080 days ago · 21 km deep · 12 km away
  19. 1.81 km SSW of Wilderness Rim, Washington · 20080 days ago · 20 km deep · 12 km away
  20. 2.11 km WNW of Federal Way, Washington · 20077 days ago · 28 km deep · 56 km away

Before

  1. 1.97 km NNE of Snoqualmie, Washington · 20132 days ago · 9 km deep · 19 km away
  2. 1.80 km ESE of Beaux Arts Village, Washington · 20134 days ago · 20 km deep · 46 km away
  3. 2.121 km ENE of Ashford, Washington · 20134 days ago · 0 km deep · 68 km away
  4. 2.26 km S of Hansville, Washington · 20136 days ago · 18 km deep · 85 km away
  5. 2.31 km NNE of Beaux Arts Village, WA · 20137 days ago · 20 km deep · 46 km away
  6. 3.10 km WSW of Beaux Arts Village, Washington · 20138 days ago · 19 km deep · 47 km away
  7. 2.010 km NNE of Snoqualmie, Washington · 20141 days ago · 14 km deep · 21 km away
  8. 1.86 km WSW of Erlands Point-Kitsap Lake, Washington · 20142 days ago · 20 km deep · 89 km away
  9. 1.74 km S of Ashford, Washington · 20142 days ago · 0 km deep · 87 km away
  10. 2.212 km E of Carnation, Washington · 20142 days ago · 11 km deep · 23 km away
  11. 1.62 km S of Canterwood, Washington · 20147 days ago · 19 km deep · 74 km away
  12. 2.33 km NW of Kingston, Washington · 20155 days ago · 24 km deep · 80 km away
  13. 2.56 km ENE of Lofall, Washington · 20160 days ago · 10 km deep · 84 km away
  14. 2.33 km S of Issaquah, Washington · 20161 days ago · 18 km deep · 31 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10839493. Read Mon, Sep 28, 2026, 5:31 PM UTC.