Washington earthquakes

M1.8 earthquake 11 km NNE of Snoqualmie, Washington

A magnitude 1.8 earthquake struck 11 km NNE of Snoqualmie, Washington on Tue, Apr 7, 1981, 3:00 PM PST (23:00 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.5 4 km SSW of Gorst, 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
1.8 (md), micro
Local time
UTC
1981-04-07 23:00:55 UTC
Depth
13.1 km (8.1 mi), shallow
Epicenter
47.617° N, 121.758° 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 0.5 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
66°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 2.54 km SSW of Gorst, Washington · 16606 days ago · 24 km deep · 74 km away
  2. 1.84 km SSW of Hamilton, Washington · 16603 days ago · 3 km deep · 99 km away
  3. 1.916 km NNE of May Creek, Washington · 16602 days ago · 7 km deep · 43 km away
  4. 2.42 km SSE of Maple Heights-Lake Desire, Washington · 16598 days ago · 17 km deep · 32 km away
  5. 1.77 km NNW of Kingston, Washington · 16593 days ago · 29 km deep · 65 km away
  6. 1.56 km NNE of Oso, Washington · 16593 days ago · 0 km deep · 79 km away
  7. 1.54 km WSW of Chico, Washington · 16590 days ago · 12 km deep · 75 km away
  8. 2.14 km WSW of Chico, Washington · 16590 days ago · 13 km deep · 75 km away
  9. 1.6Puget Sound region, Washington · 16589 days ago · 17 km deep · 49 km away
  10. 1.76 km NNE of Oso, Washington · 16586 days ago · 0 km deep · 80 km away
  11. 2.05 km NNE of Oso, Washington · 16586 days ago · 5 km deep · 78 km away
  12. 1.65 km NNE of Oso, Washington · 16586 days ago · 1 km deep · 79 km away
  13. 2.56 km NNE of Oso, Washington · 16586 days ago · 1 km deep · 79 km away
  14. 1.55 km NNE of Oso, Washington · 16585 days ago · 0 km deep · 79 km away
  15. 1.5Washington · 16584 days ago · 1 km deep · 79 km away
  16. 1.712 km ESE of Carbonado, Washington · 16583 days ago · 16 km deep · 65 km away
  17. 1.52 km SW of Roosevelt, Washington · 16582 days ago · 25 km deep · 36 km away
  18. 1.81 km SE of Enetai, Washington · 16577 days ago · 32 km deep · 62 km away
  19. 2.06 km NNE of Port Townsend, Washington · 16573 days ago · 21 km deep · 95 km away
  20. 2.40 km W of Mountlake Terrace, Washington · 16570 days ago · 23 km deep · 46 km away
  21. 1.519 km NNE of Index, Washington · 16569 days ago · 6 km deep · 46 km away
  22. 1.71 km SE of Redmond, Washington · 16568 days ago · 11 km deep · 27 km away
  23. 1.611 km NE of Snoqualmie, Washington · 16565 days ago · 2 km deep · 3 km away
  24. 1.68 km SSW of Concrete, Washington · 16565 days ago · 3 km deep · 94 km away
  25. 1.67 km ENE of Snoqualmie, Washington · 16562 days ago · 9 km deep · 6 km away
  26. 2.56 km NNW of Bangor Trident Base, Washington · 16553 days ago · 21 km deep · 75 km away
  27. 1.53 km ENE of Union Hill-Novelty Hill, Washington · 16553 days ago · -1 km deep · 19 km away
  28. 1.9Washington · 16553 days ago · -1 km deep · 19 km away
  29. 1.6Washington · 16552 days ago · -1 km deep · 99 km away
  30. 2.412 km ESE of Riverbend, Washington · 16550 days ago · 13 km deep · 24 km away

Before

  1. 1.97 km ENE of Snoqualmie, Washington · 16613 days ago · 9 km deep · 6 km away
  2. 2.07 km ENE of Snoqualmie, Washington · 16613 days ago · 8 km deep · 6 km away
  3. 1.53 km SE of Echo Lake, Washington · 16613 days ago · 16 km deep · 25 km away
  4. 1.7Washington · 16614 days ago · 4 km deep · 44 km away
  5. 2.74 km WNW of Wauna, Washington · 16615 days ago · 23 km deep · 74 km away
  6. 2.24 km S of Coupeville, Washington · 16616 days ago · 25 km deep · 94 km away
  7. 2.02 km WNW of Belfair, Washington · 16618 days ago · 1 km deep · 85 km away
  8. 1.518 km NNE of Index, Washington · 16623 days ago · 2 km deep · 45 km away
  9. 2.47 km SSE of Coupeville, Washington · 16623 days ago · 25 km deep · 89 km away
  10. 1.74 km WNW of Burien, Washington · 16627 days ago · 17 km deep · 50 km away
  11. 1.56 km SE of Freeland, Washington · 16632 days ago · 50 km deep · 66 km away
  12. 2.410 km NE of Snoqualmie, Washington · 16632 days ago · 6 km deep · 4 km away
  13. 1.918 km N of Index, Washington · 16633 days ago · 5 km deep · 45 km away
  14. 1.618 km NE of May Creek, Washington · 16633 days ago · 6 km deep · 45 km away
  15. 1.518 km N of Index, Washington · 16633 days ago · 5 km deep · 45 km away
  16. 3.619 km NNE of Index, Washington · 16633 days ago · 5 km deep · 46 km away
  17. 1.615 km NNE of May Creek, Washington · 16634 days ago · 8 km deep · 43 km away
  18. 2.67 km NE of Snoqualmie Pass, Washington · 16638 days ago · 7 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10100123. Read Mon, Sep 28, 2026, 2:20 PM UTC.