Washington earthquakes

M1.8 earthquake 23 km ESE of Packwood, Washington

A magnitude 1.8 earthquake struck 23 km ESE of Packwood, Washington on Sun, Sep 11, 1983, 4:45 PM PDT (23:45 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.2 11 km ESE of Carbonado, Washington. This one was a foreshock.

Tieton 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
1.8 (md), micro
Local time
UTC
1983-09-11 23:45:11 UTC
Depth
-1.2 km (-0.7 mi), shallow
Epicenter
46.519° N, 121.386° 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, 0.6 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
138°
Stations used
13

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 6 in the 30 days before it.

After

  1. 2.211 km ESE of Carbonado, Washington · 15714 days ago · 18 km deep · 70 km away
  2. 2.310 km SE of Mossyrock, Washington · 15713 days ago · 14 km deep · 77 km away
  3. 1.638 km NNE of Amboy, Washington · 15709 days ago · -1 km deep · 71 km away
  4. 2.025 km SSE of Packwood, Washington · 15704 days ago · -1 km deep · 16 km away
  5. 2.125 km SSE of Packwood, Washington · 15702 days ago · 0 km deep · 16 km away
  6. 1.625 km SSE of Packwood, Washington · 15701 days ago · 0 km deep · 16 km away
  7. 1.638 km NNE of Amboy, Washington · 15697 days ago · -1 km deep · 71 km away
  8. 2.219 km S of Morton, Washington · 15696 days ago · 8 km deep · 68 km away
  9. 1.914 km SW of Alder, Washington · 15694 days ago · -1 km deep · 82 km away
  10. 2.43 km SSE of Ahtanum, Washington · 15693 days ago · 15 km deep · 60 km away
  11. 2.63 km S of Ahtanum, Washington · 15692 days ago · 14 km deep · 58 km away
  12. 1.917 km SE of Carbonado, Washington · 15691 days ago · -1 km deep · 63 km away
  13. 1.737 km NNE of Amboy, Washington · 15691 days ago · -1 km deep · 71 km away
  14. 1.637 km NNE of Amboy, Washington · 15690 days ago · -1 km deep · 71 km away
  15. 1.520 km S of Morton, Washington · 15684 days ago · 9 km deep · 68 km away
  16. 1.736 km NNE of Amboy, Washington · 15681 days ago · -1 km deep · 72 km away
  17. 1.58 km NW of Greenwater, Washington · 15680 days ago · -1 km deep · 81 km away
  18. 2.13 km E of Cle Elum, Washington · 15680 days ago · -1 km deep · 84 km away
  19. 2.55 km SW of Morton, Washington · 15674 days ago · 16 km deep · 72 km away
  20. 1.538 km NNE of Amboy, Washington · 15666 days ago · 0 km deep · 71 km away
  21. 2.026 km S of Morton, Washington · 15666 days ago · 9 km deep · 71 km away
  22. 2.420 km E of Packwood, Washington · 15662 days ago · -1 km deep · 10 km away
  23. 1.737 km NNE of Amboy, Washington · 15658 days ago · 0 km deep · 71 km away

Before

  1. 2.238 km S of Morton, Washington · 15716 days ago · -1 km deep · 70 km away
  2. 2.227 km S of Greenwater, Washington · 15724 days ago · -1 km deep · 50 km away
  3. 1.920 km ENE of Ashford, Washington · 15732 days ago · 0 km deep · 46 km away
  4. 1.615 km NNE of Packwood, Washington · 15732 days ago · 2 km deep · 27 km away
  5. 2.238 km NNE of Amboy, Washington · 15733 days ago · -1 km deep · 70 km away
  6. 1.539 km S of Morton, Washington · 15743 days ago · -2 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10161013. Read Tue, Sep 22, 2026, 9:11 AM UTC.