Washington earthquakes

M1.5 earthquake 24 km E of Castle Rock, Washington

A magnitude 1.5 earthquake struck 24 km E of Castle Rock, Washington on Thu, May 10, 2001, 1:26 PM PDT (20:26 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.3 11 km NNE of Ashford, Washington. This one was a foreshock.

Castle Rock 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2001-05-10 20:26:28 UTC
Depth
0.1 km (0.1 mi), shallow
Epicenter
46.270° N, 122.595° 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, 2.3 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
160°
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: 8 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 1.917 km SSW of Packwood, Washington · 9273 days ago · 7 km deep · 68 km away
  2. 1.722 km ENE of Ashford, Washington · 9248 days ago · -1 km deep · 91 km away
  3. 1.92 km WNW of Metzger, Oregon · 9238 days ago · 25 km deep · 92 km away
  4. 1.912 km NNE of Ashford, Washington · 9234 days ago · 6 km deep · 81 km away
  5. 2.114 km ESE of Ashford, Washington · 9234 days ago · 6 km deep · 76 km away
  6. 3.311 km NNE of Ashford, Washington · 9225 days ago · 6 km deep · 81 km away · felt by 20
  7. 1.616 km ENE of Yacolt, Washington · 9222 days ago · 14 km deep · 50 km away
  8. 1.821 km NNW of Amboy, Washington · 9221 days ago · 17 km deep · 20 km away

Before

  1. 1.99 km SSW of Morton, Washington · 9276 days ago · 18 km deep · 31 km away
  2. 2.424 km ENE of Ashford, Washington · 9277 days ago · -2 km deep · 91 km away
  3. 2.023 km SSE of Mossyrock, Washington · 9277 days ago · 17 km deep · 21 km away
  4. 1.722 km ENE of Ashford, Washington · 9281 days ago · -1 km deep · 90 km away
  5. 2.019 km E of West Side Highway, Washington · 9290 days ago · 17 km deep · 9 km away
  6. 1.79 km SSW of Morton, Washington · 9291 days ago · 18 km deep · 32 km away
  7. 2.38 km SSW of Morton, Washington · 9292 days ago · 18 km deep · 32 km away
  8. 1.59 km WSW of Mineral, Washington · 9294 days ago · 16 km deep · 53 km away
  9. 1.618 km NNE of Ashford, Washington · 9294 days ago · 10 km deep · 87 km away
  10. 1.628 km ENE of Ashford, Washington · 9295 days ago · -1 km deep · 96 km away
  11. 1.923 km ENE of Ashford, Washington · 9297 days ago · 0 km deep · 91 km away
  12. 2.223 km ENE of Ashford, Washington · 9299 days ago · -1 km deep · 91 km away
  13. 2.423 km ENE of Ashford, Washington · 9299 days ago · -1 km deep · 91 km away
  14. 2.325 km ENE of Ashford, Washington · 9300 days ago · -2 km deep · 92 km away
  15. 1.822 km ENE of Ashford, Washington · 9302 days ago · 0 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10523958. Read Fri, Oct 2, 2026, 2:04 AM UTC.