Washington earthquakes

M1.5 earthquake 9 km WSW of Mineral, Washington

A magnitude 1.5 earthquake struck 9 km WSW of Mineral, Washington on Sat, Apr 21, 2001, 4:43 PM PDT (23:43 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.4 24 km ENE of Ashford, Washington. This one was a foreshock.

Morton 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), micro
Local time
UTC
2001-04-21 23:43:52 UTC
Depth
15.7 km (9.8 mi), shallow
Epicenter
46.699° N, 122.300° 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 0.2 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
81°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.227 km SSE of Greenwater, Washington · 9290 days ago · 1 km deep · 62 km away
  2. 2.38 km SSW of Morton, Washington · 9290 days ago · 18 km deep · 24 km away
  3. 1.79 km SSW of Morton, Washington · 9290 days ago · 18 km deep · 24 km away
  4. 1.84 km NNW of Dash Point, Washington · 9289 days ago · 16 km deep · 74 km away
  5. 1.65 km ESE of Wilkeson, Washington · 9289 days ago · 0 km deep · 51 km away
  6. 2.019 km E of West Side Highway, Washington · 9288 days ago · 17 km deep · 61 km away
  7. 1.61 km S of Mercer Island, Washington · 9280 days ago · 7 km deep · 96 km away
  8. 1.722 km ENE of Ashford, Washington · 9279 days ago · -1 km deep · 43 km away
  9. 2.023 km SSE of Mossyrock, Washington · 9276 days ago · 17 km deep · 40 km away
  10. 2.424 km ENE of Ashford, Washington · 9275 days ago · -2 km deep · 46 km away
  11. 1.99 km SSW of Morton, Washington · 9275 days ago · 18 km deep · 24 km away
  12. 1.524 km E of Castle Rock, Washington · 9274 days ago · 0 km deep · 53 km away
  13. 1.917 km SSW of Packwood, Washington · 9271 days ago · 7 km deep · 49 km away
  14. 1.91 km S of Maple Valley, Washington · 9258 days ago · 6 km deep · 78 km away
  15. 1.81 km SW of Wauna, Washington · 9250 days ago · 46 km deep · 79 km away
  16. 1.722 km ENE of Ashford, Washington · 9246 days ago · -1 km deep · 44 km away
  17. 1.912 km NNE of Ashford, Washington · 9232 days ago · 6 km deep · 31 km away

Before

  1. 1.618 km NNE of Ashford, Washington · 9293 days ago · 10 km deep · 36 km away
  2. 1.628 km ENE of Ashford, Washington · 9293 days ago · -1 km deep · 50 km away
  3. 1.923 km ENE of Ashford, Washington · 9295 days ago · 0 km deep · 44 km away
  4. 2.223 km ENE of Ashford, Washington · 9298 days ago · -1 km deep · 45 km away
  5. 2.423 km ENE of Ashford, Washington · 9298 days ago · -1 km deep · 45 km away
  6. 2.325 km ENE of Ashford, Washington · 9298 days ago · -2 km deep · 47 km away
  7. 1.822 km ENE of Ashford, Washington · 9300 days ago · 0 km deep · 44 km away
  8. 1.72 km W of North Bend, Washington · 9308 days ago · 19 km deep · 96 km away
  9. 2.013 km SSW of Morton, Washington · 9308 days ago · 10 km deep · 29 km away
  10. 1.632 km ESE of Packwood, Washington · 9309 days ago · 2 km deep · 80 km away
  11. 1.71 km NW of Maple Valley, Washington · 9310 days ago · 12 km deep · 80 km away
  12. 1.87 km NE of East Cathlamet, Washington · 9312 days ago · 26 km deep · 91 km away
  13. 1.623 km ENE of Ashford, Washington · 9313 days ago · -2 km deep · 44 km away
  14. 1.725 km ENE of Ashford, Washington · 9314 days ago · -2 km deep · 47 km away
  15. 1.912 km SSE of Morton, Washington · 9321 days ago · 1 km deep · 28 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10531048. Read Wed, Sep 30, 2026, 10:36 AM UTC.