Washington earthquakes

M1.7 earthquake 1 km NNW of Snoqualmie, Washington

A magnitude 1.7 earthquake struck 1 km NNW of Snoqualmie, Washington on Fri, Oct 21, 1983, 3:06 PM PDT (22:06 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.0 2 km NNW of Lakeland South, Washington. This one was a foreshock.

Snoqualmie 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
1983-10-21 22:06:43 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
47.541° N, 121.836° 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 0.9 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
155°
Stations used
7

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 18 in the 30 days before it.

After

  1. 2.02 km NNW of Lakeland South, Washington · 15672 days ago · 13 km deep · 44 km away
  2. 2.28 km S of Leavenworth, Washington · 15670 days ago · 1 km deep · 89 km away
  3. 1.71 km NNE of Union Hill-Novelty Hill, Washington · 15666 days ago · 10 km deep · 22 km away
  4. 1.55 km SW of Hansville, Washington · 15666 days ago · 21 km deep · 70 km away
  5. 2.45 km WSW of Lake Cavanaugh, Washington · 15666 days ago · 6 km deep · 88 km away
  6. 2.13 km ENE of May Creek, Washington · 15663 days ago · 10 km deep · 39 km away
  7. 2.00 km NE of Roslyn, Washington · 15656 days ago · 3 km deep · 73 km away
  8. 1.65 km NE of Mirrormont, Washington · 15655 days ago · 15 km deep · 10 km away
  9. 2.922 km NE of Ashford, Washington · 15652 days ago · -1 km deep · 74 km away
  10. 1.94 km NNW of Bryn Mawr-Skyway, Washington · 15651 days ago · 11 km deep · 33 km away
  11. 1.73 km NNW of White Center, Washington · 15650 days ago · 21 km deep · 40 km away
  12. 2.07 km NE of Lofall, Washington · 15650 days ago · 19 km deep · 67 km away
  13. 1.55 km NNE of Bryant, Washington · 15646 days ago · 15 km deep · 85 km away
  14. 1.51 km SE of Coupeville, Washington · 15644 days ago · 20 km deep · 97 km away
  15. 2.36 km SE of Black Diamond, Washington · 15640 days ago · 14 km deep · 32 km away
  16. 2.210 km ENE of Verlot, Washington · 15638 days ago · 13 km deep · 67 km away
  17. 1.98 km NNE of Lake Marcel-Stillwater, Washington · 15638 days ago · -1 km deep · 25 km away
  18. 1.51 km NE of Quilcene, Washington · 15638 days ago · 4 km deep · 84 km away
  19. 1.612 km SW of Seabeck, Washington · 15636 days ago · 12 km deep · 82 km away
  20. 2.31 km E of Clyde Hill, Washington · 15632 days ago · 24 km deep · 29 km away
  21. 1.98 km SSE of Leavenworth, Washington · 15628 days ago · 9 km deep · 92 km away
  22. 1.54 km NE of Conway, Washington · 15625 days ago · 5 km deep · 99 km away
  23. 3.01 km N of Black Diamond, Washington · 15621 days ago · 12 km deep · 28 km away
  24. 1.65 km E of Tanner, Washington · 15621 days ago · -1 km deep · 15 km away
  25. 1.84 km E of Granite Falls, Washington · 15619 days ago · -1 km deep · 61 km away

Before

  1. 2.36 km WSW of Lake Cavanaugh, Washington · 15680 days ago · 11 km deep · 88 km away
  2. 2.13 km E of Cle Elum, Washington · 15680 days ago · -1 km deep · 80 km away
  3. 1.58 km NW of Greenwater, Washington · 15681 days ago · -1 km deep · 38 km away
  4. 2.310 km NNW of Belfair, Washington · 15683 days ago · 21 km deep · 78 km away
  5. 1.53 km WSW of Chico, Washington · 15684 days ago · 12 km deep · 69 km away
  6. 1.89 km ESE of Verlot, Washington · 15684 days ago · 3 km deep · 58 km away
  7. 1.87 km NW of Belfair, Washington · 15686 days ago · 17 km deep · 80 km away
  8. 2.29 km NNW of Lake Cavanaugh, Washington · 15688 days ago · -1 km deep · 98 km away
  9. 1.917 km SE of Carbonado, Washington · 15692 days ago · -1 km deep · 66 km away
  10. 1.52 km NE of Woods Creek, Washington · 15692 days ago · 12 km deep · 40 km away
  11. 3.05 km WNW of Wilderness Rim, Washington · 15694 days ago · 21 km deep · 9 km away
  12. 1.85 km E of Granite Falls, Washington · 15694 days ago · -1 km deep · 61 km away
  13. 2.04 km S of Des Moines, Washington · 15694 days ago · 13 km deep · 42 km away
  14. 1.62 km WNW of Keyport, Washington · 15694 days ago · 23 km deep · 64 km away
  15. 1.99 km SE of Riverbend, Washington · 15697 days ago · 2 km deep · 19 km away
  16. 1.61 km N of Normandy Park, Washington · 15699 days ago · 17 km deep · 39 km away
  17. 2.72 km W of Rosedale, Washington · 15699 days ago · 27 km deep · 68 km away
  18. 1.712 km NE of Snoqualmie, Washington · 15702 days ago · 12 km deep · 11 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10170488. Read Tue, Sep 22, 2026, 3:34 PM UTC.