Washington earthquakes

M1.5 earthquake 3 km E of Oso, Washington

A magnitude 1.5 earthquake struck 3 km E of Oso, Washington on Thu, Aug 2, 2001, 6:06 PM PDT (01:06 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M3.2 2 km SW of Darrington, 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
2001-08-03 01:06:02 UTC
Depth
14.0 km (8.7 mi), shallow
Epicenter
48.272° N, 121.881° 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 0.4 km horizontally, 0.7 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: 13 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.52 km E of Oso, Washington · 9182 days ago · 13 km deep · 1 km away
  2. 2.28 km NW of Seattle, Washington · 9181 days ago · 26 km deep · 79 km away
  3. 1.56 km S of Baring, Washington · 9180 days ago · 9 km deep · 69 km away
  4. 3.22 km SW of Darrington, Washington · 9177 days ago · 2 km deep · 19 km away
  5. 1.64 km SW of Darrington, Washington · 9176 days ago · 1 km deep · 19 km away
  6. 1.55 km E of Edison, Washington · 9174 days ago · 0 km deep · 48 km away
  7. 1.66 km SW of Darrington, Washington · 9171 days ago · 9 km deep · 17 km away
  8. 2.12 km S of Darrington, Washington · 9170 days ago · 2 km deep · 21 km away
  9. 1.73 km NNE of White Center, Washington · 9167 days ago · 30 km deep · 87 km away
  10. 2.73 km SW of Darrington, Washington · 9166 days ago · 4 km deep · 19 km away
  11. 2.32 km S of Coupeville, Washington · 9156 days ago · 56 km deep · 60 km away
  12. 2.14 km SSE of Lake McMurray, Washington · 9143 days ago · 6 km deep · 24 km away
  13. 1.75 km S of Lake McMurray, Washington · 9143 days ago · 4 km deep · 25 km away

Before

  1. 2.24 km SW of Shoreline, Washington · 9193 days ago · 27 km deep · 71 km away
  2. 2.02 km NNE of Redmond, Washington · 9200 days ago · 2 km deep · 66 km away
  3. 2.23 km NNW of Mirrormont, Washington · 9202 days ago · 16 km deep · 87 km away
  4. 1.63 km S of Seattle, Washington · 9205 days ago · 13 km deep · 84 km away
  5. 1.94 km SE of Burlington, Washington · 9214 days ago · 6 km deep · 36 km away
  6. 1.93 km SW of North Bend, Washington · 9214 days ago · 18 km deep · 89 km away
  7. 2.31 km NNE of Boulevard Park, Washington · 9220 days ago · 25 km deep · 91 km away
  8. 1.6Puget Sound region, Washington · 9220 days ago · 23 km deep · 92 km away
  9. 1.66 km SW of Aldergrove, Canada · 9221 days ago · 12 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10531438. Read Sun, Oct 4, 2026, 12:16 AM UTC.