Washington earthquakes

M1.5 earthquake 6 km ESE of Oso, Washington

A magnitude 1.5 earthquake struck 6 km ESE of Oso, Washington on Wed, Nov 12, 2003, 10:48 PM PST (06:48 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.7 7 km WNW of Alger, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2003-11-13 06:48:54 UTC
Depth
13.1 km (8.2 mi), shallow
Epicenter
48.242° N, 121.858° 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 0.7 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
82°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.85 km WSW of Lofall, Washington · 8358 days ago · 58 km deep · 82 km away
  2. 1.73 km SW of Clinton, Washington · 8357 days ago · 32 km deep · 51 km away
  3. 1.86 km WSW of La Conner, Washington · 8352 days ago · 62 km deep · 56 km away
  4. 1.77 km NNW of Anacortes, Washington · 8350 days ago · 14 km deep · 69 km away
  5. 2.01 km S of Mirrormont, Washington · 8348 days ago · 19 km deep · 89 km away
  6. 2.42 km NW of Warm Beach, Washington · 8346 days ago · 34 km deep · 40 km away
  7. 1.55 km NNE of Woods Creek, Washington · 8340 days ago · 15 km deep · 35 km away
  8. 2.07 km ENE of Port Townsend, Washington · 8333 days ago · 24 km deep · 61 km away
  9. 1.81 km WSW of Silverdale, Washington · 8324 days ago · 25 km deep · 93 km away
  10. 1.59 km SSW of Sultan, Washington · 8323 days ago · 7 km deep · 52 km away
  11. 1.55 km S of Lake Roesiger, Washington · 8311 days ago · 14 km deep · 34 km away
  12. 1.68 km ENE of Carnation, Washington · 8307 days ago · 15 km deep · 64 km away
  13. 1.91 km NNE of Oak Harbor, Washington · 8307 days ago · 19 km deep · 58 km away
  14. 2.18 km N of Edison, Washington · 8304 days ago · -1 km deep · 62 km away
  15. 2.77 km WNW of Alger, Washington · 8304 days ago · -1 km deep · 62 km away

Before

  1. 2.04 km SW of Fall City, Washington · 8360 days ago · 21 km deep · 78 km away
  2. 1.68 km SSW of Swede Heaven, Washington · 8362 days ago · 13 km deep · 7 km away
  3. 1.711 km W of Coupeville, Washington · 8371 days ago · 15 km deep · 72 km away
  4. 1.932 km NNE of Marblemount, WA · 8372 days ago · -1 km deep · 73 km away
  5. 1.60 km SW of Navy Yard City, Washington · 8372 days ago · 17 km deep · 98 km away
  6. 2.33 km S of Fall City, Washington · 8377 days ago · 18 km deep · 79 km away
  7. 1.510 km ESE of Riverbend, Washington · 8387 days ago · 12 km deep · 93 km away
  8. 1.71 km WSW of Mountlake Terrace, Washington · 8387 days ago · 18 km deep · 61 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10590603. Read Fri, Oct 2, 2026, 4:39 AM UTC.