Washington earthquakes

M1.6 earthquake 39 km NNE of Amboy, Washington

A magnitude 1.6 earthquake struck 39 km NNE of Amboy, Washington on Sat, Sep 14, 1985, 11:35 PM PDT (06:35 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M1.9 2 km NNE of Packwood, Washington. This one was a foreshock.

Amboy 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
1985-09-15 06:35:21 UTC
Depth
-1.6 km (-1.0 mi), shallow
Epicenter
46.209° N, 122.178° 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 0.1 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
86°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 1.92 km NNE of Packwood, Washington · 14976 days ago · 3 km deep · 62 km away
  2. 1.637 km NNE of Amboy, Washington · 14970 days ago · -1 km deep · 1 km away
  3. 2.117 km ESE of Carbonado, Washington · 14967 days ago · 16 km deep · 91 km away
  4. 1.5Washington · 14964 days ago · -1 km deep · 79 km away
  5. 2.728 km NE of Trout Lake, Washington · 14964 days ago · 1 km deep · 69 km away
  6. 2.528 km NE of Trout Lake, Washington · 14964 days ago · -1 km deep · 69 km away
  7. 2.24 km S of Bingen, Washington · 14964 days ago · 7 km deep · 81 km away
  8. 1.611 km NNE of La Center, Washington · 14954 days ago · 8 km deep · 43 km away
  9. 1.523 km E of Castle Rock, Washington · 14953 days ago · 19 km deep · 34 km away
  10. 1.64 km SE of Packwood, Washington · 14950 days ago · 0 km deep · 60 km away
  11. 2.138 km S of Morton, Washington · 14948 days ago · -2 km deep · 2 km away
  12. 1.810 km ESE of Ashford, Washington · 14942 days ago · 2 km deep · 61 km away
  13. 1.6Washington · 14937 days ago · 16 km deep · 38 km away
  14. 2.34 km SW of Sandy, Oregon · 14937 days ago · 20 km deep · 93 km away
  15. 2.013 km NNW of Morton, Washington · 14932 days ago · 17 km deep · 52 km away
  16. 2.038 km S of Morton, Washington · 14930 days ago · -2 km deep · 1 km away
  17. 2.313 km NE of Ashford, Washington · 14929 days ago · 7 km deep · 75 km away
  18. 2.32 km SE of Chenoweth, Oregon · 14929 days ago · -1 km deep · 100 km away

Before

  1. 2.37 km SSE of Carbonado, Washington · 14986 days ago · 14 km deep · 91 km away
  2. 1.829 km S of Morton, Washington · 14986 days ago · 10 km deep · 10 km away
  3. 2.21 km NE of Brush Prairie, Washington · 14991 days ago · 15 km deep · 58 km away
  4. 2.5Washington · 14991 days ago · 6 km deep · 13 km away
  5. 1.813 km ESE of Ashford, Washington · 14992 days ago · -1 km deep · 62 km away
  6. 1.538 km NNE of Amboy, Washington · 14997 days ago · -2 km deep · 1 km away
  7. 1.715 km ENE of Packwood, Washington · 15003 days ago · 5 km deep · 73 km away
  8. 1.538 km NNE of Amboy, Washington · 15005 days ago · -2 km deep · 1 km away
  9. 1.538 km NNE of Amboy, Washington · 15005 days ago · -2 km deep · 2 km away
  10. 1.738 km S of Morton, Washington · 15007 days ago · -2 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10194338. Read Tue, Sep 22, 2026, 7:44 AM UTC.