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 17, 1975, 10:44 AM PDT (17:44 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.7 27 km S of Morton, 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
1975-09-17 17:44:30 UTC
Depth
7.4 km (4.6 mi), shallow
Epicenter
46.336° N, 122.238° 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 9.2 km horizontally, 24.2 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
146°
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: 13 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.711 km NNW of Skamokawa Valley, Washington · 18633 days ago · 0 km deep · 92 km away
  2. 1.911 km W of Packwood, Washington · 18629 days ago · 4 km deep · 44 km away
  3. 1.724 km SE of Greenwater, Washington · 18627 days ago · 8 km deep · 92 km away
  4. 2.024 km S of Morton, Washington · 18625 days ago · -1 km deep · 2 km away
  5. 2.727 km S of Morton, Washington · 18612 days ago · 11 km deep · 3 km away
  6. 2.642 km SSE of Morton, Washington · 18609 days ago · 9 km deep · 19 km away
  7. 3.227 km NE of Amboy, Washington · 18609 days ago · 23 km deep · 26 km away
  8. 1.813 km NNW of Mossyrock, Washington · 18608 days ago · -1 km deep · 42 km away
  9. 2.213 km NNW of Mossyrock, Washington · 18608 days ago · 13 km deep · 42 km away
  10. 1.913 km SSE of Pe Ell, Washington · 18607 days ago · -1 km deep · 78 km away
  11. 2.218 km N of Mossyrock, Washington · 18599 days ago · 2 km deep · 45 km away
  12. 1.713 km WSW of Alder, Washington · 18598 days ago · -1 km deep · 48 km away
  13. 1.96 km SW of Morton, Washington · 18591 days ago · 11 km deep · 22 km away

Before

  1. 2.925 km S of Morton, Washington · 18633 days ago · 9 km deep · 2 km away
  2. 1.923 km SE of Greenwater, Washington · 18635 days ago · 2 km deep · 96 km away
  3. 2.425 km SSE of Morton, Washington · 18646 days ago · 8 km deep · 6 km away
  4. 2.038 km SSE of Morton, Washington · 18648 days ago · 4 km deep · 15 km away
  5. 2.61 km WNW of Crocker, Washington · 18648 days ago · 7 km deep · 84 km away
  6. 2.213 km NNE of Amboy, Washington · 18649 days ago · 5 km deep · 36 km away
  7. 3.06 km N of Olympia, Washington · 18657 days ago · 43 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10861798. Read Tue, Sep 22, 2026, 9:10 AM UTC.