Washington earthquakes

M1.7 earthquake 38 km SSE of Morton, Washington

A magnitude 1.7 earthquake struck 38 km SSE of Morton, Washington on Sat, Oct 18, 1980, 9:32 PM PDT (04:32 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M3.0 13 km W of Packwood, 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
1.7 (md), micro
Local time
UTC
1980-10-19 04:32:09 UTC
Depth
-1.2 km (-0.7 mi), shallow
Epicenter
46.223° N, 122.170° 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, 0.3 km in depth
Magnitude uncertainty
±0.16
Depth from
Operator assigned
Station coverage gap
196°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 3.013 km W of Packwood, Washington · 16775 days ago · 5 km deep · 47 km away
  2. 1.813 km W of Packwood, Washington · 16773 days ago · 6 km deep · 48 km away
  3. 1.834 km NNE of Amboy, Washington · 16773 days ago · 1 km deep · 6 km away
  4. 1.823 km SW of Packwood, Washington · 16772 days ago · 0 km deep · 34 km away
  5. 1.812 km W of Packwood, Washington · 16769 days ago · 5 km deep · 48 km away
  6. 2.125 km S of Morton, Washington · 16760 days ago · 1 km deep · 14 km away
  7. 2.112 km SE of Mossyrock, Washington · 16746 days ago · 9 km deep · 29 km away
  8. 2.119 km NE of Ashford, Washington · 16741 days ago · 9 km deep · 79 km away
  9. 1.69 km WNW of Deer Island, Oregon · 16736 days ago · 23 km deep · 67 km away
  10. 1.619 km NNE of Ashford, Washington · 16735 days ago · 7 km deep · 79 km away
  11. 1.623 km S of Morton, Washington · 16731 days ago · -1 km deep · 14 km away

Before

  1. 1.736 km S of Morton, Washington · 16775 days ago · 2 km deep · 4 km away
  2. 2.839 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 2 km away
  3. 2.036 km NNE of Amboy, Washington · 16777 days ago · 2 km deep · 4 km away
  4. 1.838 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 2 km away
  5. 2.338 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 2 km away
  6. 2.437 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 3 km away
  7. 1.740 km SSE of Morton, Washington · 16779 days ago · -1 km deep · 3 km away
  8. 1.93 km SE of Kelso, Washington · 16779 days ago · 7 km deep · 55 km away
  9. 1.937 km NNE of Amboy, Washington · 16785 days ago · -1 km deep · 3 km away
  10. 1.738 km NNE of Amboy, Washington · 16785 days ago · 0 km deep · 2 km away
  11. 1.737 km NNE of Amboy, Washington · 16785 days ago · 0 km deep · 3 km away
  12. 1.837 km NNE of Amboy, Washington · 16790 days ago · 0 km deep · 3 km away
  13. 1.9Washington · 16795 days ago · 0 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10092588. Read Wed, Sep 23, 2026, 5:34 AM UTC.