Washington earthquakes

M1.7 earthquake 23 km S of Morton, Washington

A magnitude 1.7 earthquake struck 23 km S of Morton, Washington on Fri, May 28, 1982, 4:21 AM PDT (11:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.0 24 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
1.7 (md), micro
Local time
UTC
1982-05-28 11:21:38 UTC
Depth
10.4 km (6.5 mi), shallow
Epicenter
46.344° N, 122.248° 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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
60°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 3.024 km S of Morton, Washington · 16185 days ago · 11 km deep · 0 km away
  2. 1.823 km S of Morton, Washington · 16185 days ago · 11 km deep · 1 km away
  3. 1.922 km S of Morton, Washington · 16184 days ago · 5 km deep · 1 km away
  4. 2.02 km ESE of Deer Island, Oregon · 16182 days ago · 23 km deep · 64 km away
  5. 1.520 km S of Morton, Washington · 16180 days ago · 9 km deep · 4 km away
  6. 1.93 km SW of Mineral, Washington · 16179 days ago · 7 km deep · 39 km away
  7. 1.628 km SSE of Morton, Washington · 16177 days ago · 4 km deep · 5 km away
  8. 2.29 km E of Ashford, Washington · 16174 days ago · 4 km deep · 53 km away
  9. 1.525 km S of Morton, Washington · 16172 days ago · 13 km deep · 2 km away
  10. 1.636 km NNE of Amboy, Washington · 16171 days ago · -1 km deep · 16 km away
  11. 1.823 km S of Morton, Washington · 16171 days ago · 5 km deep · 1 km away
  12. 1.911 km ESE of Carbonado, Washington · 16162 days ago · 10 km deep · 84 km away
  13. 2.08 km WNW of North Portland, Oregon · 16158 days ago · 18 km deep · 89 km away
  14. 2.223 km ENE of Ashford, Washington · 16157 days ago · -1 km deep · 68 km away
  15. 2.32 km SE of Crocker, Washington · 16154 days ago · -1 km deep · 81 km away
  16. 1.631 km NE of Yacolt, Washington · 16146 days ago · 1 km deep · 38 km away
  17. 1.724 km S of Greenwater, Washington · 16144 days ago · 8 km deep · 81 km away
  18. 1.924 km ESE of Packwood, Washington · 16144 days ago · -1 km deep · 69 km away
  19. 1.537 km S of Morton, Washington · 16139 days ago · -1 km deep · 13 km away
  20. 2.412 km E of Wilkeson, Washington · 16139 days ago · 17 km deep · 89 km away
  21. 2.923 km ESE of Packwood, Washington · 16137 days ago · 6 km deep · 69 km away
  22. 1.624 km S of Morton, Washington · 16131 days ago · 5 km deep · 1 km away
  23. 1.633 km NE of Amboy, Washington · 16129 days ago · 1 km deep · 23 km away

Before

  1. 1.723 km S of Morton, Washington · 16189 days ago · 6 km deep · 1 km away
  2. 1.82 km NE of Brush Prairie, Washington · 16190 days ago · 14 km deep · 70 km away
  3. 1.823 km S of Morton, Washington · 16190 days ago · 11 km deep · 0 km away
  4. 1.637 km NNE of Amboy, Washington · 16199 days ago · -1 km deep · 17 km away
  5. 1.638 km NNE of Amboy, Washington · 16199 days ago · 0 km deep · 16 km away
  6. 1.67 km ESE of McKenna, Washington · 16200 days ago · 22 km deep · 66 km away
  7. 2.139 km NNE of Amboy, Washington · 16200 days ago · 0 km deep · 16 km away
  8. 1.736 km NNE of Amboy, Washington · 16200 days ago · -1 km deep · 16 km away
  9. 2.338 km NNE of Amboy, Washington · 16200 days ago · -1 km deep · 15 km away
  10. 2.037 km NNE of Amboy, Washington · 16200 days ago · 0 km deep · 16 km away
  11. 1.938 km NNE of Amboy, Washington · 16200 days ago · -1 km deep · 16 km away
  12. 1.938 km NNE of Amboy, Washington · 16200 days ago · 0 km deep · 16 km away
  13. 1.837 km NNE of Amboy, Washington · 16200 days ago · -1 km deep · 16 km away
  14. 1.838 km NNE of Amboy, Washington · 16201 days ago · 0 km deep · 16 km away
  15. 1.537 km NNE of Amboy, Washington · 16201 days ago · 1 km deep · 17 km away
  16. 2.038 km NNE of Amboy, Washington · 16201 days ago · 0 km deep · 16 km away
  17. 1.738 km NNE of Amboy, Washington · 16201 days ago · 0 km deep · 16 km away
  18. 1.838 km NNE of Amboy, Washington · 16201 days ago · -1 km deep · 16 km away
  19. 2.336 km NNE of Amboy, Washington · 16201 days ago · -1 km deep · 17 km away
  20. 1.838 km NNE of Amboy, Washington · 16201 days ago · -1 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10138823. Read Tue, Sep 22, 2026, 10:40 AM UTC.