Washington earthquakes

M1.6 earthquake 5 km SE of Oso, Washington

A magnitude 1.6 earthquake struck 5 km SE of Oso, Washington on Tue, Sep 7, 2004, 9:33 AM PDT (16:33 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.1 4 km NNE of Jamestown, Washington. This one was a foreshock.

Swede Heaven 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-09-07 16:33:00 UTC
Depth
11.5 km (7.2 mi), shallow
Epicenter
48.236° N, 121.868° 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 0.8 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
71°
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: 13 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 1.51 km E of Maple Valley, Washington · 8059 days ago · 13 km deep · 94 km away
  2. 1.92 km SE of Sudden Valley, Washington · 8058 days ago · 20 km deep · 62 km away
  3. 2.27 km SSE of Maple Falls, Washington · 8057 days ago · -1 km deep · 71 km away
  4. 1.55 km SSW of Fall City, Washington · 8054 days ago · 13 km deep · 80 km away
  5. 1.96 km ENE of Acme, Washington · 8048 days ago · 14 km deep · 58 km away
  6. 3.14 km NNE of Jamestown, Washington · 8043 days ago · 16 km deep · 89 km away
  7. 1.58 km SW of Camano, Washington · 8035 days ago · 26 km deep · 56 km away
  8. 2.32 km NE of Union Hill-Novelty Hill, Washington · 8035 days ago · 9 km deep · 61 km away
  9. 1.52 km ESE of Sudden Valley, Washington · 8034 days ago · 19 km deep · 62 km away
  10. 1.75 km ENE of Granite Falls, Washington · 8031 days ago · -1 km deep · 16 km away
  11. 1.64 km SE of Oso, Washington · 8030 days ago · 12 km deep · 2 km away
  12. 1.845 km WNW of Granite Falls, Washington · 8024 days ago · 0 km deep · 85 km away
  13. 1.62 km SE of Port Hadlock-Irondale, Washington · 8006 days ago · 25 km deep · 70 km away

Before

  1. 1.59 km WSW of Port Ludlow, Washington · 8063 days ago · 26 km deep · 79 km away
  2. 1.51 km NNW of Silvana, Washington · 8070 days ago · 8 km deep · 29 km away
  3. 1.7British Columbia, Canada · 8071 days ago · 1 km deep · 89 km away
  4. 1.5Washington · 8075 days ago · 7 km deep · 62 km away
  5. 2.03 km NE of Anacortes, Washington · 8075 days ago · 17 km deep · 63 km away
  6. 2.44 km NNE of Anacortes, Washington · 8075 days ago · 15 km deep · 63 km away
  7. 1.54 km NE of Anacortes, Washington · 8075 days ago · 16 km deep · 63 km away
  8. 1.63 km WSW of White Center, Washington · 8077 days ago · 20 km deep · 90 km away
  9. 2.12 km E of Edmonds, Washington · 8077 days ago · 31 km deep · 59 km away
  10. 1.91 km WNW of Swede Heaven, Washington · 8078 days ago · 7 km deep · 11 km away
  11. 1.65 km SSE of Swede Heaven, Washington · 8078 days ago · 9 km deep · 13 km away
  12. 1.73 km NNW of Sumas, Washington · 8079 days ago · 0 km deep · 93 km away
  13. 1.86 km W of Orcas, Washington · 8079 days ago · 13 km deep · 95 km away
  14. 1.75 km SE of Hobart, Washington · 8081 days ago · 1 km deep · 95 km away
  15. 2.03 km NE of Wilburton, Washington · 8081 days ago · 24 km deep · 71 km away
  16. 1.62 km ESE of Klahanie, Washington · 8081 days ago · 5 km deep · 75 km away
  17. 1.60 km NW of Enetai, Washington · 8085 days ago · 26 km deep · 90 km away
  18. 1.51 km NE of Lyman, Washington · 8086 days ago · 1 km deep · 36 km away
  19. 2.318 km E of Verlot, Washington · 8086 days ago · 4 km deep · 31 km away
  20. 1.614 km SSW of Chilliwack, Canada · 8088 days ago · -1 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10618018. Read Fri, Oct 2, 2026, 3:51 AM UTC.