Washington earthquakes

M1.9 earthquake 10 km NNW of Packwood, Washington

A magnitude 1.9 earthquake struck 10 km NNW of Packwood, Washington on Sun, Sep 9, 1973, 10:59 AM PDT (17:59 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.4 4 km WSW of Wilderness Rim, Washington. This one was a foreshock.

Morton 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
1.9 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1973-09-09 17:59:35 UTC
Depth
2.1 km (1.3 mi), shallow
Epicenter
46.691° N, 121.730° 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 1.1 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
205°, poorly surrounded by stations
Stations used
6

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 8 in the 30 days before it.

After

  1. 1.99 km SSE of Mossyrock, Washington · 19381 days ago · 9 km deep · 59 km away
  2. 1.73 km ENE of Mirrormont, Washington · 19380 days ago · 23 km deep · 89 km away
  3. 1.62 km NNE of Dash Point, Washington · 19380 days ago · 4 km deep · 88 km away
  4. 2.212 km SSE of Mossyrock, Washington · 19378 days ago · 11 km deep · 60 km away
  5. 2.29 km ENE of Snoqualmie, Washington · 19370 days ago · 81 km deep · 97 km away
  6. 2.214 km NNE of Ashford, Washington · 19368 days ago · 7 km deep · 26 km away
  7. 1.616 km ESE of Ashford, Washington · 19359 days ago · 11 km deep · 8 km away
  8. 1.64 km WSW of Wilderness Rim, Washington · 19357 days ago · 18 km deep · 83 km away
  9. 1.92 km NNE of Normandy Park, Washington · 19341 days ago · 19 km deep · 96 km away
  10. 1.734 km SSE of Morton, Washington · 19339 days ago · 6 km deep · 53 km away
  11. 1.76 km E of Issaquah, Washington · 19337 days ago · 10 km deep · 94 km away
  12. 1.61 km WNW of Puyallup, Washington · 19329 days ago · 23 km deep · 71 km away
  13. 2.44 km WSW of Wilderness Rim, Washington · 19323 days ago · 19 km deep · 83 km away

Before

  1. 2.438 km NNE of Amboy, Washington · 19387 days ago · 8 km deep · 64 km away
  2. 1.827 km NNE of Amboy, Washington · 19391 days ago · 10 km deep · 77 km away
  3. 2.712 km S of Morton, Washington · 19398 days ago · 11 km deep · 48 km away
  4. 1.913 km ENE of Ashford, Washington · 19401 days ago · 8 km deep · 16 km away
  5. 1.72 km NW of Ravensdale, Washington · 19403 days ago · 5 km deep · 79 km away
  6. 1.97 km NNE of Bonney Lake, Washington · 19412 days ago · 26 km deep · 69 km away
  7. 1.932 km E of Castle Rock, Washington · 19412 days ago · 19 km deep · 77 km away
  8. 1.75 km ENE of Sumner, Washington · 19412 days ago · 22 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10856998. Read Sun, Oct 4, 2026, 9:25 AM UTC.