Washington earthquakes

M1.6 earthquake 16 km ESE of Ashford, Washington

A magnitude 1.6 earthquake struck 16 km ESE of Ashford, Washington on Wed, Oct 3, 1973, 12:31 AM PDT (07:31 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M1.9 2 km NNE of Normandy Park, 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
1973-10-03 07:31:47 UTC
Depth
10.8 km (6.7 mi), shallow
Epicenter
46.706° N, 121.832° 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 0.4 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
335°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.64 km WSW of Wilderness Rim, Washington · 19345 days ago · 18 km deep · 81 km away
  2. 1.92 km NNE of Normandy Park, Washington · 19329 days ago · 19 km deep · 91 km away
  3. 1.734 km SSE of Morton, Washington · 19327 days ago · 6 km deep · 51 km away
  4. 1.76 km E of Issaquah, Washington · 19325 days ago · 10 km deep · 92 km away
  5. 1.61 km WNW of Puyallup, Washington · 19317 days ago · 23 km deep · 65 km away
  6. 2.44 km WSW of Wilderness Rim, Washington · 19311 days ago · 19 km deep · 81 km away
  7. 1.83 km NW of Home, Washington · 19298 days ago · 42 km deep · 98 km away
  8. 1.81 km ESE of Dash Point, Washington · 19297 days ago · 3 km deep · 80 km away
  9. 1.61 km WNW of Auburn, Washington · 19293 days ago · 3 km deep · 74 km away

Before

  1. 2.214 km NNE of Ashford, Washington · 19356 days ago · 7 km deep · 21 km away
  2. 2.29 km ENE of Snoqualmie, Washington · 19358 days ago · 81 km deep · 96 km away
  3. 2.212 km SSE of Mossyrock, Washington · 19366 days ago · 11 km deep · 55 km away
  4. 1.62 km NNE of Dash Point, Washington · 19368 days ago · 4 km deep · 83 km away
  5. 1.73 km ENE of Mirrormont, Washington · 19368 days ago · 23 km deep · 86 km away
  6. 1.99 km SSE of Mossyrock, Washington · 19369 days ago · 9 km deep · 53 km away
  7. 1.910 km NNW of Packwood, Washington · 19371 days ago · 2 km deep · 8 km away
  8. 2.438 km NNE of Amboy, Washington · 19375 days ago · 8 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10857328. Read Tue, Sep 22, 2026, 9:14 AM UTC.