Washington earthquakes

M1.5 earthquake 4 km ESE of Mossyrock, Washington

A magnitude 1.5 earthquake struck 4 km ESE of Mossyrock, Washington on Wed, Sep 12, 2001, 12:38 AM PDT (07:38 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.1 25 km ENE of Packwood, Washington. This one was a foreshock.

Mossyrock 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
2001-09-12 07:38:07 UTC
Depth
19.3 km (12.0 mi), shallow
Epicenter
46.512° N, 122.431° 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
±0.03
Depth from
From location
Station coverage gap
90°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.615 km SSW of Morton, Washington · 9145 days ago · 16 km deep · 13 km away
  2. 1.538 km NNE of Amboy, Washington · 9136 days ago · 0 km deep · 39 km away
  3. 1.917 km S of Morton, Washington · 9132 days ago · 17 km deep · 17 km away
  4. 2.125 km ENE of Packwood, Washington · 9113 days ago · 4 km deep · 84 km away
  5. 1.52 km E of Hockinson, Washington · 9113 days ago · 10 km deep · 86 km away
  6. 1.737 km NNE of Amboy, Washington · 9105 days ago · 0 km deep · 39 km away
  7. 1.76 km ESE of Carbonado, Washington · 9104 days ago · 4 km deep · 71 km away
  8. 2.110 km S of Mossyrock, Washington · 9093 days ago · 18 km deep · 9 km away
  9. 1.52 km NE of Brush Prairie, Washington · 9090 days ago · 17 km deep · 85 km away

Before

  1. 1.619 km E of Kelso, Washington · 9157 days ago · 13 km deep · 44 km away
  2. 2.115 km ESE of Carbonado, Washington · 9161 days ago · 16 km deep · 71 km away
  3. 1.617 km E of Kelso, Washington · 9166 days ago · 12 km deep · 47 km away
  4. 1.817 km W of Packwood, Washington · 9167 days ago · 2 km deep · 43 km away
  5. 1.74 km WNW of Dash Point, Washington · 9173 days ago · 21 km deep · 92 km away
  6. 1.81 km SSW of Auburn, Washington · 9173 days ago · 16 km deep · 88 km away
  7. 1.523 km ENE of Ashford, Washington · 9174 days ago · 0 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10537623. Read Wed, Sep 30, 2026, 12:08 PM UTC.