Washington earthquakes

M1.7 earthquake 1 km S of Lochsloy, Washington

A magnitude 1.7 earthquake struck 1 km S of Lochsloy, Washington on Sun, Jul 28, 2002, 12:09 AM PDT (07:09 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.1 9 km SW of Friday Harbor, Washington. This one was a foreshock.

Lochsloy 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
2002-07-28 07:09:49 UTC
Depth
0.4 km (0.3 mi), shallow
Epicenter
48.041° N, 122.034° 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, 0.5 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
127°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 2.63 km E of Port Hadlock-Irondale, Washington · 8828 days ago · 58 km deep · 52 km away
  2. 3.31 km NNE of East Hill-Meridian, Washington · 8828 days ago · 60 km deep · 69 km away
  3. 2.02 km WSW of Gorst, Washington · 8825 days ago · 21 km deep · 79 km away
  4. 1.948 km WNW of Granite Falls, Washington · 8824 days ago · 4 km deep · 90 km away
  5. 2.04 km SW of Inglewood-Finn Hill, Washington · 8820 days ago · 21 km deep · 43 km away
  6. 1.85 km SSW of Sultan, Washington · 8816 days ago · 17 km deep · 29 km away
  7. 1.84 km NE of Edison, Washington · 8815 days ago · 12 km deep · 66 km away
  8. 1.93 km ENE of Granite Falls, Washington · 8804 days ago · -1 km deep · 10 km away
  9. 1.81 km NNW of Tukwila, Washington · 8801 days ago · 10 km deep · 64 km away
  10. 1.63 km SSW of Des Moines, Washington · 8800 days ago · 21 km deep · 78 km away
  11. 1.85 km E of North Stanwood, Washington · 8796 days ago · 0 km deep · 30 km away
  12. 1.62 km SE of Alger, Washington · 8793 days ago · 14 km deep · 66 km away
  13. 1.59 km NNE of Port Angeles East, Washington · 8793 days ago · 41 km deep · 96 km away
  14. 1.80 km WNW of Maple Valley, Washington · 8789 days ago · 1 km deep · 72 km away
  15. 2.39 km NNE of Hamilton, Washington · 8783 days ago · -1 km deep · 63 km away
  16. 1.510 km N of Hamilton, Washington · 8783 days ago · 3 km deep · 64 km away
  17. 2.39 km N of Hamilton, Washington · 8783 days ago · -1 km deep · 63 km away
  18. 1.611 km NE of Snoqualmie, Washington · 8782 days ago · 5 km deep · 54 km away
  19. 1.71 km SSE of Lyman, Washington · 8780 days ago · -1 km deep · 53 km away
  20. 2.06 km NE of Snoqualmie, Washington · 8779 days ago · 11 km deep · 55 km away
  21. 4.19 km SW of Friday Harbor, Washington · 8776 days ago · 23 km deep · 95 km away · felt by 294
  22. 2.50 km ENE of Lyman, Washington · 8776 days ago · -1 km deep · 54 km away
  23. 1.99 km WSW of Friday Harbor, Washington · 8776 days ago · 21 km deep · 94 km away
  24. 1.99 km WSW of Friday Harbor, Washington · 8775 days ago · 21 km deep · 95 km away
  25. 1.79 km WSW of Friday Harbor, Washington · 8775 days ago · 21 km deep · 95 km away
  26. 1.59 km SW of Friday Harbor, Washington · 8775 days ago · 20 km deep · 94 km away
  27. 2.49 km N of Hamilton, Washington · 8772 days ago · -1 km deep · 63 km away
  28. 2.610 km NNE of Hamilton, Washington · 8772 days ago · -1 km deep · 64 km away
  29. 2.47 km S of Sultan, Washington · 8772 days ago · 7 km deep · 32 km away
  30. 1.59 km N of Hamilton, Washington · 8772 days ago · 3 km deep · 63 km away
  31. 2.19 km NNE of Hamilton, Washington · 8771 days ago · 4 km deep · 63 km away
  32. 2.910 km SW of Friday Harbor, Washington · 8771 days ago · 23 km deep · 95 km away

Before

  1. 1.78 km ENE of Marrowstone, Washington · 8833 days ago · 23 km deep · 41 km away
  2. 1.5Washington · 8833 days ago · 3 km deep · 31 km away
  3. 1.79 km N of Rockport, Washington · 8834 days ago · 3 km deep · 68 km away
  4. 3.14 km SSW of Wilderness Rim, Washington · 8837 days ago · 27 km deep · 73 km away · felt by 104
  5. 1.95 km NE of Oso, Washington · 8837 days ago · -1 km deep · 31 km away
  6. 2.15 km NE of Oso, Washington · 8837 days ago · -1 km deep · 32 km away
  7. 1.54 km N of Oso, Washington · 8837 days ago · 3 km deep · 31 km away
  8. 1.73 km ESE of Black Diamond, Washington · 8840 days ago · 22 km deep · 83 km away
  9. 1.52 km N of Oso, Washington · 8844 days ago · 0 km deep · 29 km away
  10. 1.74 km NNE of Oso, Washington · 8844 days ago · 3 km deep · 31 km away
  11. 2.57 km ESE of Belfair, Washington · 8845 days ago · 27 km deep · 87 km away
  12. 1.52 km E of Oso, Washington · 8849 days ago · 13 km deep · 28 km away
  13. 1.52 km SE of Federal Way, Washington · 8850 days ago · 16 km deep · 84 km away
  14. 1.75 km NNE of Oso, Washington · 8851 days ago · 1 km deep · 32 km away
  15. 1.81 km E of North Creek, Washington · 8851 days ago · 23 km deep · 26 km away
  16. 2.17 km E of Deming, Washington · 8853 days ago · 11 km deep · 87 km away
  17. 1.62 km NE of Marrowstone, Washington · 8857 days ago · 31 km deep · 47 km away
  18. 1.72 km SW of Artondale, Washington · 8858 days ago · 55 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10567198. Read Wed, Sep 30, 2026, 9:37 PM UTC.