Washington earthquakes

M1.6 earthquake 22 km S of Morton, Washington

A magnitude 1.6 earthquake struck 22 km S of Morton, Washington on Sat, Sep 4, 1982, 4:26 AM PDT (11:26 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.2 22 km ESE 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
1.6 (md), micro
Local time
UTC
1982-09-04 11:26:46 UTC
Depth
4.0 km (2.5 mi), shallow
Epicenter
46.356° N, 122.247° 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, 0.5 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
79°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 2.222 km ESE of Packwood, Washington · 16088 days ago · 0 km deep · 69 km away
  2. 1.612 km NE of Ashford, Washington · 16080 days ago · 9 km deep · 60 km away
  3. 1.83 km NNE of Packwood, Washington · 16077 days ago · 4 km deep · 55 km away
  4. 1.936 km NNE of Amboy, Washington · 16076 days ago · -1 km deep · 18 km away
  5. 1.823 km S of Morton, Washington · 16073 days ago · 9 km deep · 1 km away
  6. 1.517 km NW of Packwood, Washington · 16070 days ago · -1 km deep · 53 km away
  7. 1.725 km S of Morton, Washington · 16054 days ago · 8 km deep · 3 km away
  8. 2.021 km S of Morton, Washington · 16052 days ago · 10 km deep · 1 km away
  9. 1.922 km S of Morton, Washington · 16042 days ago · 6 km deep · 1 km away
  10. 1.538 km S of Morton, Washington · 16035 days ago · -2 km deep · 16 km away
  11. 1.539 km NNE of Amboy, Washington · 16035 days ago · -2 km deep · 17 km away
  12. 1.538 km NNE of Amboy, Washington · 16031 days ago · -1 km deep · 17 km away
  13. 1.92 km NE of Brush Prairie, Washington · 16030 days ago · 10 km deep · 71 km away
  14. 1.538 km NNE of Amboy, Washington · 16029 days ago · -2 km deep · 18 km away

Before

  1. 1.613 km NE of Ashford, Washington · 16090 days ago · 9 km deep · 60 km away
  2. 1.837 km SSE of Morton, Washington · 16091 days ago · 9 km deep · 17 km away
  3. 1.86 km S of Greenwater, Washington · 16091 days ago · 2 km deep · 94 km away
  4. 1.723 km ESE of Packwood, Washington · 16095 days ago · 2 km deep · 69 km away
  5. 1.916 km NNE of Ashford, Washington · 16095 days ago · 8 km deep · 64 km away
  6. 2.423 km ESE of Packwood, Washington · 16096 days ago · 0 km deep · 69 km away
  7. 1.525 km S of Morton, Washington · 16100 days ago · 8 km deep · 3 km away
  8. 2.322 km S of Morton, Washington · 16105 days ago · 8 km deep · 0 km away
  9. 1.737 km NNE of Amboy, Washington · 16106 days ago · 0 km deep · 19 km away
  10. 2.137 km NNE of Amboy, Washington · 16106 days ago · 1 km deep · 18 km away
  11. 1.913 km SE of Mossyrock, Washington · 16106 days ago · 10 km deep · 14 km away
  12. 2.837 km NNE of Amboy, Washington · 16106 days ago · 0 km deep · 18 km away
  13. 2.537 km NNE of Amboy, Washington · 16107 days ago · 0 km deep · 17 km away
  14. 1.638 km NNE of Amboy, Washington · 16107 days ago · -1 km deep · 17 km away
  15. 2.037 km NNE of Amboy, Washington · 16107 days ago · -1 km deep · 18 km away
  16. 1.538 km NNE of Amboy, Washington · 16107 days ago · 0 km deep · 18 km away
  17. 2.538 km NNE of Amboy, Washington · 16107 days ago · 0 km deep · 17 km away
  18. 1.942 km WNW of Trout Lake, Washington · 16108 days ago · 0 km deep · 26 km away
  19. 1.94 km SSW of Orting, Washington · 16108 days ago · -1 km deep · 78 km away
  20. 1.838 km NNE of Amboy, Washington · 16108 days ago · 0 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10142493. Read Tue, Sep 22, 2026, 3:58 PM UTC.