Washington earthquakes

M1.6 earthquake 5 km SE of Oso, Washington

A magnitude 1.6 earthquake struck 5 km SE of Oso, Washington on Fri, Aug 5, 2005, 3:23 PM PDT (22:23 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.9 4 km WSW of Quilcene, 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
2005-08-05 22:23:31 UTC
Depth
12.7 km (7.9 mi), shallow
Epicenter
48.235° N, 121.871° 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, 1.1 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
84°
Stations used
13

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 13 in the 30 days before it.

After

  1. 1.59 km NNW of Orcas, Washington · 7727 days ago · 14 km deep · 97 km away
  2. 1.70 km SSW of Oso, Washington · 7725 days ago · 13 km deep · 6 km away
  3. 2.217 km ESE of Glacier, Washington · 7724 days ago · 34 km deep · 64 km away
  4. 1.55 km SW of Coupeville, Washington · 7723 days ago · 16 km deep · 66 km away
  5. 2.13 km S of Geneva, Washington · 7716 days ago · 15 km deep · 67 km away
  6. 2.17 km ENE of Lake Roesiger, WA · 7711 days ago · 12 km deep · 24 km away
  7. 2.16 km NE of Duvall, Washington · 7707 days ago · 20 km deep · 51 km away
  8. 1.65 km ENE of Anacortes, Washington · 7707 days ago · 16 km deep · 60 km away
  9. 2.56 km WSW of Darrington, Washington · 7707 days ago · 8 km deep · 15 km away
  10. 2.17 km ENE of Quilcene, Washington · 7704 days ago · 22 km deep · 80 km away
  11. 2.02 km ENE of Granite Falls, Washington · 7704 days ago · -1 km deep · 17 km away
  12. 1.73 km SSE of Kingsgate, Washington · 7703 days ago · 2 km deep · 63 km away
  13. 1.84 km SW of Mirrormont, Washington · 7702 days ago · 20 km deep · 90 km away
  14. 1.50 km SW of Maple Valley, Washington · 7701 days ago · 4 km deep · 95 km away
  15. 1.81 km W of Maple Valley, Washington · 7701 days ago · 7 km deep · 95 km away
  16. 1.52 km W of Maple Valley, Washington · 7701 days ago · 7 km deep · 95 km away
  17. 1.74 km S of La Conner, Washington · 7697 days ago · 18 km deep · 48 km away
  18. 1.82 km ENE of Granite Falls, Washington · 7696 days ago · -1 km deep · 17 km away
  19. 1.51 km NNW of Maple Valley, Washington · 7695 days ago · 7 km deep · 94 km away
  20. 1.72 km SW of Erlands Point-Kitsap Lake, Washington · 7691 days ago · 19 km deep · 97 km away
  21. 2.94 km WSW of Quilcene, Washington · 7690 days ago · 49 km deep · 92 km away
  22. 1.512 km NE of Snoqualmie, Washington · 7681 days ago · 6 km deep · 71 km away
  23. 1.65 km WSW of Snoqualmie, Washington · 7679 days ago · 8 km deep · 81 km away
  24. 2.617 km NW of Leavenworth, Washington · 7675 days ago · 4 km deep · 97 km away
  25. 1.89 km E of Deming, Washington · 7669 days ago · 12 km deep · 67 km away

Before

  1. 1.521 km NNE of Concrete, Washington · 7729 days ago · 0 km deep · 57 km away
  2. 2.015 km SE of Glacier, Washington · 7732 days ago · 26 km deep · 61 km away
  3. 1.64 km NE of Lake Roesiger, Washington · 7733 days ago · 15 km deep · 25 km away
  4. 2.32 km SSE of Big Lake, Washington · 7737 days ago · 14 km deep · 31 km away
  5. 1.84 km WSW of Mount Vernon, Washington · 7740 days ago · 18 km deep · 43 km away
  6. 1.62 km ESE of Issaquah, Washington · 7744 days ago · 15 km deep · 79 km away
  7. 1.911 km E of Marblemount, Washington · 7749 days ago · 0 km deep · 54 km away
  8. 1.720 km SSE of Glacier, Washington · 7750 days ago · 20 km deep · 56 km away
  9. 1.59 km SSW of Port Hadlock-Irondale, Washington · 7753 days ago · 15 km deep · 79 km away
  10. 1.77 km SSE of Acme, Washington · 7754 days ago · 3 km deep · 52 km away
  11. 2.47 km ESE of Oso, Washington · 7754 days ago · 10 km deep · 3 km away
  12. 1.716 km E of Lake Marcel-Stillwater, Washington · 7755 days ago · 16 km deep · 61 km away
  13. 2.26 km NW of Picnic Point, Washington · 7755 days ago · 33 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10674328. Read Fri, Oct 2, 2026, 7:52 PM UTC.