Washington earthquakes

M1.9 earthquake 25 km S of Morton, Washington

A magnitude 1.9 earthquake struck 25 km S of Morton, Washington on Thu, Apr 15, 2004, 7:08 AM PDT (14:08 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M2.9 8 km E of Porter, 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
1.9 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-04-15 14:08:12 UTC
Depth
10.9 km (6.8 mi), shallow
Epicenter
46.331° N, 122.243° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
49°
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: 10 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.215 km SE of Mossyrock, Washington · 8203 days ago · 12 km deep · 13 km away
  2. 1.64 km ESE of Elbe, Washington · 8202 days ago · 16 km deep · 47 km away
  3. 1.92 km WNW of Ashford, Washington · 8197 days ago · 14 km deep · 50 km away
  4. 1.622 km N of Trout Lake, Washington · 8191 days ago · 0 km deep · 57 km away
  5. 1.72 km WSW of North Portland, Oregon · 8188 days ago · 13 km deep · 89 km away
  6. 2.12 km WNW of Saint Helens, Oregon · 8187 days ago · 21 km deep · 68 km away
  7. 2.98 km E of Porter, Washington · 8173 days ago · 41 km deep · 100 km away
  8. 1.82 km NE of Bucoda, Washington · 8170 days ago · 21 km deep · 71 km away
  9. 1.633 km SSE of Morton, Washington · 8158 days ago · 4 km deep · 16 km away
  10. 1.78 km E of Ashford, Washington · 8157 days ago · 3 km deep · 54 km away

Before

  1. 2.316 km SSE of Carbonado, Washington · 8205 days ago · 11 km deep · 71 km away
  2. 1.821 km S of Morton, Washington · 8211 days ago · 9 km deep · 4 km away
  3. 1.526 km SSE of Mossyrock, Washington · 8214 days ago · 19 km deep · 11 km away
  4. 1.825 km SSE of Mossyrock, Washington · 8214 days ago · 19 km deep · 11 km away
  5. 1.75 km NNW of Fern Prairie, Washington · 8219 days ago · 5 km deep · 74 km away
  6. 1.917 km SSE of Carbonado, Washington · 8231 days ago · -2 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10609443. Read Fri, Oct 2, 2026, 12:42 AM UTC.