Washington earthquakes

M3.4 earthquake 29 km S of Morton, Washington

A magnitude 3.4 earthquake struck 29 km S of Morton, Washington on Thu, Apr 19, 1973, 11:33 AM PST (19:33 UTC), 13 km (8 mi) below the surface.

Morton forecastMore in Washington

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.4 (md), minor
Local time
UTC
1973-04-19 19:33:47 UTC
Depth
13.1 km (8.2 mi), shallow
Epicenter
46.297° N, 122.218° 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 2.6 km horizontally, 3.0 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
285°, poorly surrounded by stations
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.62 km SSE of DuPont, Washington · 19509 days ago · 26 km deep · 92 km away
  2. 2.615 km NNE of Ashford, Washington · 19503 days ago · 6 km deep · 69 km away
  3. 2.516 km SSW of Packwood, Washington · 19490 days ago · -2 km deep · 43 km away
  4. 2.18 km ENE of Kalama, Washington · 19482 days ago · 13 km deep · 49 km away
  5. 1.833 km NE of Amboy, Washington · 19477 days ago · 8 km deep · 19 km away
  6. 2.812 km E of Wilkeson, Washington · 19475 days ago · 17 km deep · 93 km away
  7. 2.036 km SSE of Morton, Washington · 19469 days ago · 6 km deep · 9 km away

Before

  1. 2.414 km NNE of Ashford, Washington · 19519 days ago · 1 km deep · 68 km away
  2. 2.110 km SE of Mineral, Washington · 19525 days ago · 26 km deep · 39 km away
  3. 3.029 km S of Morton, Washington · 19526 days ago · 16 km deep · 1 km away
  4. 1.722 km ENE of Kalama, Washington · 19527 days ago · 32 km deep · 35 km away
  5. 1.93 km ENE of McKenna, Washington · 19538 days ago · 31 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10856093. Read Tue, Sep 22, 2026, 3:08 PM UTC.