Washington earthquakes

M1.6 earthquake 1 km ESE of Oso, Washington

A magnitude 1.6 earthquake struck 1 km ESE of Oso, Washington on Mon, Sep 29, 2008, 3:51 PM PDT (22:51 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.8 4 km NE of Ferndale, 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2008-09-29 22:51:34 UTC
Depth
12.8 km (7.9 mi), shallow
Epicenter
48.267° N, 121.905° 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.

Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
211°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.66 km WSW of Wilderness Rim, Washington · 6578 days ago · 19 km deep · 94 km away
  2. 2.40 km NE of Clyde Hill, Washington · 6577 days ago · 27 km deep · 74 km away
  3. 1.94 km SE of Oso, Washington · 6564 days ago · 11 km deep · 3 km away
  4. 1.71 km WNW of Rockport, Washington · 6563 days ago · 0 km deep · 33 km away
  5. 1.53 km W of Rockport, Washington · 6563 days ago · 4 km deep · 31 km away
  6. 1.710 km NW of Port Townsend, Washington · 6562 days ago · 27 km deep · 71 km away
  7. 1.83 km ENE of Maple Heights-Lake Desire, Washington · 6562 days ago · 20 km deep · 92 km away
  8. 1.50 km WSW of Monroe North, Washington · 6560 days ago · 15 km deep · 43 km away
  9. 1.76 km NW of Sedro-Woolley, Washington · 6552 days ago · 5 km deep · 43 km away
  10. 1.77 km NNE of Startup, Washington · 6552 days ago · 9 km deep · 41 km away
  11. 1.73 km ENE of East Renton Highlands, Washington · 6551 days ago · 22 km deep · 87 km away
  12. 1.82 km NNE of Maple Valley, Washington · 6551 days ago · 19 km deep · 96 km away
  13. 2.25 km N of Lofall, Washington · 6551 days ago · 20 km deep · 71 km away
  14. 1.60 km NW of Maple Valley, Washington · 6551 days ago · 14 km deep · 97 km away
  15. 2.414 km SSE of Oak Bay, Canada · 6550 days ago · 24 km deep · 98 km away
  16. 1.815 km SSE of Oak Bay, Canada · 6550 days ago · 24 km deep · 97 km away
  17. 1.79 km NNE of Lake Marcel-Stillwater, Washington · 6549 days ago · 5 km deep · 55 km away
  18. 2.06 km SW of Port Ludlow, Washington · 6549 days ago · 0 km deep · 75 km away
  19. 1.73 km SSE of Ames Lake, Washington · 6543 days ago · 17 km deep · 74 km away
  20. 1.64 km NNE of Deming, Washington · 6540 days ago · 8 km deep · 70 km away
  21. 2.84 km NE of Ferndale, Washington · 6539 days ago · 19 km deep · 82 km away · felt by 6
  22. 1.83 km NNE of Woods Creek, Washington · 6535 days ago · 10 km deep · 40 km away
  23. 2.40 km SW of Mercer Island, Washington · 6530 days ago · 3 km deep · 82 km away
  24. 2.40 km S of Mercer Island, Washington · 6530 days ago · 3 km deep · 82 km away
  25. 2.47 km W of Anacortes, Washington · 6528 days ago · 0 km deep · 66 km away · felt by 10
  26. 1.89 km N of Quilcene, Washington · 6522 days ago · 15 km deep · 82 km away
  27. 2.89 km SSE of Sultan, Washington · 6522 days ago · 17 km deep · 55 km away · felt by 11

Before

  1. 2.12 km SSW of Kingston, Washington · 6580 days ago · 28 km deep · 70 km away
  2. 2.11 km SE of Oso, Washington · 6580 days ago · 13 km deep · 1 km away
  3. 1.75 km SE of Oso, Washington · 6582 days ago · 14 km deep · 4 km away
  4. 1.93 km E of Granite Falls, Washington · 6582 days ago · -1 km deep · 20 km away
  5. 1.62 km NE of North Bend, Washington · 6583 days ago · 17 km deep · 85 km away
  6. 1.56 km SW of Everson, Washington · 6585 days ago · 2 km deep · 78 km away
  7. 1.72 km NE of Wilburton, Washington · 6586 days ago · 3 km deep · 74 km away
  8. 2.71 km ESE of Snoqualmie, Washington · 6591 days ago · 23 km deep · 83 km away · felt by 7
  9. 1.59 km NE of Fall City, Washington · 6594 days ago · 13 km deep · 73 km away
  10. 1.68 km WNW of Lofall, Washington · 6596 days ago · 23 km deep · 78 km away
  11. 1.93 km ENE of Poulsbo, Washington · 6598 days ago · 23 km deep · 77 km away
  12. 1.82 km NE of Snoqualmie, Washington · 6601 days ago · 18 km deep · 81 km away
  13. 1.70 km NNW of Port Orchard, Washington · 6601 days ago · -1 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10753793. Read Mon, Oct 5, 2026, 6:58 AM UTC.