Washington earthquakes

M4.0 earthquake 14 km NNW of Morton, Washington

A magnitude 4.0 earthquake struck 14 km NNW of Morton, Washington on Thu, Oct 14, 1976, 2:39 PM PDT (21:39 UTC), 16 km (10 mi) below the surface.

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
4.0 (md), light
Local time
UTC
1976-10-14 21:39:18 UTC
Depth
16.2 km (10.1 mi), shallow
Epicenter
46.674° N, 122.368° 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 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
107°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.113 km WSW of Mineral, Washington · 18239 days ago · 16 km deep · 1 km away
  2. 2.42 km NE of Maple Valley, Washington · 18236 days ago · 13 km deep · 86 km away
  3. 1.97 km ENE of Hobart, Washington · 18234 days ago · 22 km deep · 94 km away
  4. 1.91 km W of Hobart, Washington · 18234 days ago · 18 km deep · 88 km away
  5. 1.84 km S of Orting, Washington · 18233 days ago · -1 km deep · 44 km away
  6. 1.96 km N of Packwood, Washington · 18230 days ago · 1 km deep · 52 km away
  7. 2.211 km S of Greenwater, Washington · 18228 days ago · 4 km deep · 68 km away
  8. 1.86 km SSW of Southworth, Washington · 18218 days ago · 23 km deep · 89 km away
  9. 3.122 km ENE of Ashford, Washington · 18212 days ago · -1 km deep · 50 km away
  10. 2.924 km ENE of Ashford, Washington · 18212 days ago · 4 km deep · 51 km away
  11. 1.61 km ENE of Riverton, Washington · 18207 days ago · 23 km deep · 91 km away
  12. 1.513 km WSW of Alder, Washington · 18204 days ago · -1 km deep · 9 km away
  13. 2.723 km N of Amboy, Washington · 18191 days ago · 4 km deep · 62 km away

Before

  1. 2.05 km NNW of Onalaska, Washington · 18241 days ago · 42 km deep · 30 km away
  2. 2.014 km NNW of Morton, Washington · 18243 days ago · 11 km deep · 1 km away
  3. 1.75 km ENE of Belfair, Washington · 18245 days ago · 19 km deep · 93 km away
  4. 2.417 km NE of Ashford, Washington · 18250 days ago · 14 km deep · 43 km away
  5. 1.6Washington · 18250 days ago · 13 km deep · 94 km away
  6. 2.212 km N of Ashford, Washington · 18258 days ago · 3 km deep · 34 km away
  7. 1.7Puget Sound region, Washington · 18267 days ago · 18 km deep · 94 km away
  8. 1.716 km NNE of Mossyrock, Washington · 18268 days ago · 12 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10842363 (also filed as usp0000jvd). Read Tue, Sep 22, 2026, 5:40 AM UTC.