Washington earthquakes

M1.8 earthquake 7 km ESE of Riverbend, Washington

A magnitude 1.8 earthquake struck 7 km ESE of Riverbend, Washington on Sat, Dec 9, 1972, 8:54 AM PST (16:54 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.7 2 km SW of Southworth, 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
1.8 (md), micro
Local time
UTC
1972-12-09 16:54:36 UTC
Depth
-1.1 km (-0.7 mi), shallow
Epicenter
47.446° N, 121.650° 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 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
188°, 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: 25 in the 60 days after this one and 19 in the 30 days before it.

After

  1. 2.72 km SW of Southworth, Washington · 19644 days ago · 27 km deep · 66 km away
  2. 2.89 km ESE of Ashford, Washington · 19642 days ago · 9 km deep · 83 km away
  3. 2.09 km ENE of Duvall, Washington · 19641 days ago · 28 km deep · 41 km away
  4. 1.89 km SW of Wilderness Rim, Washington · 19638 days ago · 7 km deep · 17 km away
  5. 2.214 km N of Cliffdell, Washington · 19631 days ago · 8 km deep · 61 km away
  6. 1.93 km NNE of Indianola, Washington · 19630 days ago · 15 km deep · 73 km away
  7. 2.14 km NNW of Maplewood, Washington · 19629 days ago · 17 km deep · 70 km away
  8. 1.90 km N of Newport, Washington · 19628 days ago · 20 km deep · 42 km away
  9. 1.60 km W of Riverbend, Washington · 19626 days ago · 23 km deep · 8 km away
  10. 1.81 km WSW of Wauna, Washington · 19625 days ago · 21 km deep · 76 km away
  11. 1.81 km NW of Larch Way, Washington · 19624 days ago · 25 km deep · 64 km away
  12. 1.65 km ENE of Carnation, Washington · 19618 days ago · 24 km deep · 28 km away
  13. 1.66 km W of Lofall, Washington · 19609 days ago · 18 km deep · 91 km away
  14. 2.25 km SW of Wilderness Rim, Washington · 19609 days ago · 18 km deep · 13 km away
  15. 3.44 km NW of Woods Creek, Washington · 19607 days ago · 18 km deep · 55 km away
  16. 1.94 km NNW of Woods Creek, Washington · 19607 days ago · 15 km deep · 56 km away
  17. 1.920 km SW of Nile, Washington · 19605 days ago · 6 km deep · 90 km away
  18. 1.64 km WSW of Woodway, Washington · 19600 days ago · 3 km deep · 70 km away
  19. 2.03 km ESE of Black Diamond, Washington · 19598 days ago · 10 km deep · 29 km away
  20. 1.90 km NNW of Beaux Arts Village, Washington · 19594 days ago · 20 km deep · 44 km away
  21. 1.80 km NNE of City of Sammamish, Washington · 19594 days ago · 15 km deep · 34 km away
  22. 2.27 km NE of Lake Marcel-Stillwater, Washington · 19590 days ago · -1 km deep · 35 km away
  23. 2.617 km SW of Ellensburg, Washington · 19586 days ago · -1 km deep · 94 km away
  24. 1.71 km E of Sammamish, Washington · 19586 days ago · 7 km deep · 37 km away
  25. 3.04 km SW of Southworth, Washington · 19585 days ago · 46 km deep · 68 km away

Before

  1. 2.59 km W of Packwood, Washington · 19645 days ago · 7 km deep · 96 km away
  2. 1.912 km ESE of Cle Elum, Washington · 19646 days ago · 0 km deep · 73 km away
  3. 3.24 km SE of Kingston, Washington · 19648 days ago · 20 km deep · 70 km away
  4. 1.910 km E of Carnation, Washington · 19650 days ago · 10 km deep · 23 km away
  5. 3.66 km ENE of Belfair, Washington · 19651 days ago · 15 km deep · 83 km away
  6. 1.98 km E of Ashford, Washington · 19652 days ago · -1 km deep · 78 km away
  7. 1.75 km SW of Verlot, Washington · 19654 days ago · -1 km deep · 70 km away
  8. 1.57 km NE of Brinnon, Washington · 19654 days ago · -1 km deep · 94 km away
  9. 1.57 km WNW of Bangor Trident Base, Washington · 19654 days ago · -1 km deep · 93 km away
  10. 2.07 km NE of Quilcene, Washington · 19655 days ago · 46 km deep · 98 km away
  11. 1.54 km WSW of Issaquah, Washington · 19659 days ago · 21 km deep · 34 km away
  12. 2.116 km SE of Skykomish, Washington · 19659 days ago · 12 km deep · 40 km away
  13. 2.24 km NE of Swede Heaven, Washington · 19661 days ago · -1 km deep · 96 km away
  14. 1.8Puget Sound region, Washington · 19664 days ago · 20 km deep · 45 km away
  15. 1.87 km SE of Bainbridge Island, Washington · 19665 days ago · 13 km deep · 61 km away
  16. 1.75 km N of Lofall, Washington · 19666 days ago · 18 km deep · 88 km away
  17. 1.88 km ESE of Enumclaw, Washington · 19669 days ago · 16 km deep · 35 km away
  18. 3.30 km SW of Kenmore, Washington · 19669 days ago · 18 km deep · 56 km away
  19. 2.59 km ENE of Fall City, Washington · 19673 days ago · 13 km deep · 21 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10855263. Read Tue, Sep 22, 2026, 5:40 AM UTC.