Washington earthquakes

M1.6 earthquake 25 km ENE of Ashford, Washington

A magnitude 1.6 earthquake struck 25 km ENE of Ashford, Washington on Mon, Oct 17, 1977, 9:12 PM PDT (04:12 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.1 0 km E of Riverton, 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
1.6 (md), micro
Local time
UTC
1977-10-18 04:12:26 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
46.850° N, 121.727° 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 4.0 km horizontally, 4.6 km in depth
Depth from
From location
Station coverage gap
247°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.10 km E of Riverton, Washington · 17870 days ago · 22 km deep · 82 km away
  2. 2.1Washington · 17861 days ago · 7 km deep · 80 km away
  3. 2.09 km ENE of Thorp, Washington · 17855 days ago · 10 km deep · 93 km away
  4. 1.62 km W of Burley, Washington · 17852 days ago · 21 km deep · 95 km away
  5. 2.28 km NNW of Thorp, Washington · 17850 days ago · 4 km deep · 82 km away
  6. 1.92 km WSW of Ashford, Washington · 17845 days ago · 0 km deep · 28 km away
  7. 1.92 km SW of Ashford, Washington · 17845 days ago · -1 km deep · 27 km away
  8. 2.17 km SE of Mossyrock, Washington · 17838 days ago · 16 km deep · 66 km away
  9. 1.91 km NE of Maple Heights-Lake Desire, Washington · 17833 days ago · 16 km deep · 72 km away
  10. 2.124 km N of Packwood, Washington · 17830 days ago · 5 km deep · 5 km away
  11. 2.118 km WSW of Nile, Washington · 17827 days ago · 1 km deep · 46 km away
  12. 1.821 km SE of Carbonado, Washington · 17827 days ago · 17 km deep · 15 km away
  13. 1.70 km NNW of Clyde Hill, Washington · 17821 days ago · 21 km deep · 95 km away

Before

  1. 1.62 km NW of White Center, Washington · 17874 days ago · 19 km deep · 90 km away
  2. 1.82 km NNE of Carnation, Washington · 17877 days ago · 22 km deep · 92 km away
  3. 1.740 km SSE of Morton, Washington · 17877 days ago · 3 km deep · 75 km away
  4. 2.913 km NNE of Ellensburg, Washington · 17880 days ago · 0 km deep · 99 km away
  5. 1.64 km WNW of Mercer Island, Washington · 17885 days ago · 38 km deep · 92 km away
  6. 1.914 km E of Wilkeson, Washington · 17889 days ago · 7 km deep · 29 km away
  7. 1.915 km NNE of Ashford, Washington · 17894 days ago · 4 km deep · 17 km away
  8. 1.63 km NE of Bonney Lake, Washington · 17897 days ago · 15 km deep · 51 km away
  9. 1.74 km NE of North Bend, Washington · 17897 days ago · -1 km deep · 74 km away
  10. 2.18 km NNE of Mossyrock, Washington · 17901 days ago · 20 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10844933. Read Tue, Sep 22, 2026, 10:02 AM UTC.