Washington earthquakes

M1.8 earthquake 12 km W of Greenwater, Washington

A magnitude 1.8 earthquake struck 12 km W of Greenwater, Washington on Fri, Sep 13, 1985, 6:23 AM PDT (13:23 UTC), 14 km (8 mi) below the surface.

A larger quake followed: M3.0 4 km WSW of Des Moines, Washington. This one was a foreshock.

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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
1985-09-13 13:23:24 UTC
Depth
13.6 km (8.5 mi), shallow
Epicenter
47.165° N, 121.817° 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 0.7 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
65°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 3.04 km WSW of Des Moines, Washington · 14983 days ago · 19 km deep · 50 km away
  2. 1.85 km E of Hobart, Washington · 14981 days ago · 10 km deep · 30 km away
  3. 2.03 km SSE of Issaquah, Washington · 14977 days ago · -1 km deep · 40 km away
  4. 1.92 km NNE of Packwood, Washington · 14976 days ago · 3 km deep · 61 km away
  5. 2.63 km NW of Redmond, Washington · 14974 days ago · 8 km deep · 64 km away
  6. 1.53 km S of Monroe, Washington · 14972 days ago · -1 km deep · 74 km away
  7. 2.23 km S of Issaquah, Washington · 14972 days ago · 0 km deep · 40 km away
  8. 1.82 km WNW of Navy Yard City, Washington · 14971 days ago · 13 km deep · 79 km away
  9. 2.43 km NW of Burien, Washington · 14969 days ago · 23 km deep · 56 km away
  10. 2.02 km NW of Burien, Washington · 14969 days ago · 22 km deep · 55 km away
  11. 2.117 km ESE of Carbonado, Washington · 14967 days ago · 16 km deep · 19 km away
  12. 1.5Washington · 14964 days ago · -1 km deep · 35 km away
  13. 2.07 km WNW of Gorst, Washington · 14957 days ago · 21 km deep · 85 km away
  14. 2.70 km ENE of Riverbend, Washington · 14952 days ago · 15 km deep · 34 km away
  15. 1.64 km SE of Packwood, Washington · 14951 days ago · 0 km deep · 66 km away
  16. 2.69 km W of Belfair, Washington · 14950 days ago · 15 km deep · 91 km away
  17. 1.810 km ESE of Ashford, Washington · 14942 days ago · 2 km deep · 50 km away
  18. 1.62 km ENE of Keyport, Washington · 14941 days ago · 16 km deep · 84 km away
  19. 1.84 km WSW of Wilderness Rim, Washington · 14940 days ago · 15 km deep · 30 km away
  20. 1.6Washington · 14938 days ago · 16 km deep · 84 km away
  21. 2.62 km ESE of Silverdale, Washington · 14933 days ago · 20 km deep · 83 km away
  22. 2.013 km NNW of Morton, Washington · 14932 days ago · 17 km deep · 70 km away
  23. 1.58 km NW of Greenwater, Washington · 14931 days ago · -1 km deep · 9 km away
  24. 2.51 km NNE of Klahanie, Washington · 14930 days ago · 6 km deep · 49 km away
  25. 2.313 km NE of Ashford, Washington · 14930 days ago · 7 km deep · 35 km away

Before

  1. 2.37 km SSE of Carbonado, Washington · 14986 days ago · 14 km deep · 22 km away
  2. 1.52 km SW of Des Moines, Washington · 14987 days ago · 15 km deep · 47 km away
  3. 2.52 km SW of Des Moines, Washington · 14988 days ago · 14 km deep · 47 km away
  4. 1.65 km NNW of Maplewood, Washington · 14988 days ago · 17 km deep · 65 km away
  5. 1.822 km E of Skykomish, Washington · 14989 days ago · 0 km deep · 80 km away
  6. 2.5Washington · 14992 days ago · 6 km deep · 99 km away
  7. 1.813 km ESE of Ashford, Washington · 14993 days ago · -1 km deep · 49 km away
  8. 2.32 km ENE of Keyport, Washington · 14995 days ago · 19 km deep · 84 km away
  9. 1.51 km ESE of Keyport, Washington · 14997 days ago · 23 km deep · 83 km away
  10. 1.715 km ENE of Packwood, Washington · 15003 days ago · 5 km deep · 60 km away
  11. 1.54 km N of Seattle, Washington · 15005 days ago · 21 km deep · 66 km away
  12. 1.811 km SW of Ellensburg, Washington · 15006 days ago · 9 km deep · 92 km away
  13. 1.83 km NNW of Seabeck, Washington · 15006 days ago · 50 km deep · 96 km away
  14. 1.612 km ESE of Enumclaw, Washington · 15009 days ago · 1 km deep · 3 km away
  15. 1.61 km NW of Lake Roesiger, Washington · 15011 days ago · 12 km deep · 92 km away
  16. 1.72 km SSE of Crocker, Washington · 15014 days ago · 0 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10194033. Read Tue, Sep 22, 2026, 3:59 PM UTC.