Washington earthquakes

M2.0 earthquake 24 km S of Morton, Washington

A magnitude 2.0 earthquake struck 24 km S of Morton, Washington on Wed, Sep 24, 1975, 5:35 PM PDT (00:35 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.2 27 km NE of Amboy, 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
2.0 (md), micro
Local time
UTC
1975-09-25 00:35:21 UTC
Depth
-1.0 km (-0.6 mi), shallow
Epicenter
46.337° N, 122.264° 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, 0.4 km in depth
Magnitude uncertainty
±0.22
Depth from
Operator assigned
Station coverage gap
151°
Stations used
4

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 10 in the 30 days before it.

After

  1. 2.727 km S of Morton, Washington · 18620 days ago · 11 km deep · 3 km away
  2. 2.642 km SSE of Morton, Washington · 18617 days ago · 9 km deep · 20 km away
  3. 3.227 km NE of Amboy, Washington · 18616 days ago · 23 km deep · 26 km away
  4. 1.813 km NNW of Mossyrock, Washington · 18616 days ago · -1 km deep · 41 km away
  5. 2.213 km NNW of Mossyrock, Washington · 18616 days ago · 13 km deep · 40 km away
  6. 1.913 km SSE of Pe Ell, Washington · 18614 days ago · -1 km deep · 76 km away
  7. 2.218 km N of Mossyrock, Washington · 18606 days ago · 2 km deep · 44 km away
  8. 1.713 km WSW of Alder, Washington · 18606 days ago · -1 km deep · 47 km away
  9. 1.96 km SW of Morton, Washington · 18599 days ago · 11 km deep · 21 km away

Before

  1. 1.724 km SE of Greenwater, Washington · 18635 days ago · 8 km deep · 93 km away
  2. 1.911 km W of Packwood, Washington · 18637 days ago · 4 km deep · 45 km away
  3. 1.711 km NNW of Skamokawa Valley, Washington · 18641 days ago · 0 km deep · 90 km away
  4. 2.024 km S of Morton, Washington · 18641 days ago · 7 km deep · 2 km away
  5. 2.925 km S of Morton, Washington · 18641 days ago · 9 km deep · 1 km away
  6. 1.923 km SE of Greenwater, Washington · 18643 days ago · 2 km deep · 97 km away
  7. 2.425 km SSE of Morton, Washington · 18654 days ago · 8 km deep · 8 km away
  8. 2.038 km SSE of Morton, Washington · 18655 days ago · 4 km deep · 17 km away
  9. 2.61 km WNW of Crocker, Washington · 18656 days ago · 7 km deep · 84 km away
  10. 2.213 km NNE of Amboy, Washington · 18657 days ago · 5 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10861868. Read Wed, Sep 30, 2026, 6:07 AM UTC.