Washington earthquakes

M1.9 earthquake 9 km SE of Riverbend, Washington

A magnitude 1.9 earthquake struck 9 km SE of Riverbend, Washington on Sat, Oct 1, 1983, 6:17 PM PDT (01:17 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.0 4 km S of Des Moines, Washington. This one was a foreshock.

Riverbend 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
1.9 (md), micro
Local time
UTC
1983-10-02 01:17:58 UTC
Depth
2.0 km (1.2 mi), shallow
Epicenter
47.420° N, 121.652° 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 0.7 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
132°
Stations used
16

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 11 in the 30 days before it.

After

  1. 1.914 km SW of Alder, Washington · 15694 days ago · -1 km deep · 98 km away
  2. 1.62 km WNW of Keyport, Washington · 15694 days ago · 23 km deep · 81 km away
  3. 2.04 km S of Des Moines, Washington · 15693 days ago · 13 km deep · 52 km away
  4. 1.85 km E of Granite Falls, Washington · 15693 days ago · -1 km deep · 77 km away
  5. 3.05 km WNW of Wilderness Rim, Washington · 15693 days ago · 21 km deep · 15 km away
  6. 1.52 km NE of Woods Creek, Washington · 15691 days ago · 12 km deep · 56 km away
  7. 1.917 km SE of Carbonado, Washington · 15691 days ago · -1 km deep · 56 km away
  8. 1.87 km NW of Belfair, Washington · 15686 days ago · 17 km deep · 94 km away
  9. 1.89 km ESE of Verlot, Washington · 15684 days ago · 3 km deep · 70 km away
  10. 1.53 km WSW of Chico, Washington · 15683 days ago · 12 km deep · 85 km away
  11. 2.310 km NNW of Belfair, Washington · 15683 days ago · 21 km deep · 93 km away
  12. 1.58 km NW of Greenwater, Washington · 15680 days ago · -1 km deep · 24 km away
  13. 2.13 km E of Cle Elum, Washington · 15680 days ago · -1 km deep · 62 km away
  14. 1.71 km NNW of Snoqualmie, Washington · 15676 days ago · 1 km deep · 19 km away
  15. 2.02 km NNW of Lakeland South, Washington · 15672 days ago · 13 km deep · 50 km away
  16. 2.28 km S of Leavenworth, Washington · 15670 days ago · 1 km deep · 77 km away
  17. 1.71 km NNE of Union Hill-Novelty Hill, Washington · 15666 days ago · 10 km deep · 41 km away
  18. 1.55 km SW of Hansville, Washington · 15666 days ago · 21 km deep · 89 km away
  19. 2.13 km ENE of May Creek, Washington · 15662 days ago · 10 km deep · 49 km away
  20. 2.420 km E of Packwood, Washington · 15662 days ago · -1 km deep · 92 km away
  21. 2.00 km NE of Roslyn, Washington · 15656 days ago · 3 km deep · 55 km away
  22. 1.65 km NE of Mirrormont, Washington · 15655 days ago · 15 km deep · 24 km away
  23. 2.922 km NE of Ashford, Washington · 15652 days ago · -1 km deep · 61 km away
  24. 1.94 km NNW of Bryn Mawr-Skyway, Washington · 15651 days ago · 11 km deep · 48 km away
  25. 1.73 km NNW of White Center, Washington · 15650 days ago · 21 km deep · 56 km away
  26. 2.07 km NE of Lofall, Washington · 15649 days ago · 19 km deep · 86 km away
  27. 2.36 km SE of Black Diamond, Washington · 15639 days ago · 14 km deep · 29 km away
  28. 2.210 km ENE of Verlot, Washington · 15638 days ago · 13 km deep · 79 km away
  29. 1.98 km NNE of Lake Marcel-Stillwater, Washington · 15638 days ago · -1 km deep · 42 km away

Before

  1. 1.61 km N of Normandy Park, Washington · 15698 days ago · 17 km deep · 52 km away
  2. 2.72 km W of Rosedale, Washington · 15699 days ago · 27 km deep · 79 km away
  3. 1.54 km SSW of West Wenatchee, Washington · 15700 days ago · 8 km deep · 96 km away
  4. 1.712 km NE of Snoqualmie, Washington · 15702 days ago · 12 km deep · 23 km away
  5. 1.82 km E of Granite Falls, Washington · 15711 days ago · -1 km deep · 77 km away
  6. 1.91 km NNE of Lake Roesiger, Washington · 15714 days ago · 11 km deep · 67 km away
  7. 2.211 km ESE of Carbonado, Washington · 15714 days ago · 18 km deep · 46 km away
  8. 1.81 km WNW of Lake Roesiger, Washington · 15718 days ago · 13 km deep · 67 km away
  9. 2.65 km SSW of Hansville, Washington · 15723 days ago · 22 km deep · 86 km away
  10. 2.227 km S of Greenwater, Washington · 15724 days ago · -1 km deep · 57 km away
  11. 1.91 km WNW of Federal Way, Washington · 15725 days ago · 16 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10164828. Read Tue, Sep 22, 2026, 8:44 AM UTC.