Washington earthquakes

M2.1 earthquake 17 km WSW of Packwood, Washington

A magnitude 2.1 earthquake struck 17 km WSW of Packwood, Washington on Fri, Oct 20, 1972, 2:35 PM PDT (21:35 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.4 16 km NNE of Ashford, 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
2.1 (md), micro
Local time
UTC
1972-10-20 21:35:08 UTC
Depth
5.7 km (3.5 mi), shallow
Epicenter
46.545° N, 121.888° 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 2.6 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
307°, 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: 12 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.03 km ENE of Sumner, Washington · 19693 days ago · 13 km deep · 78 km away
  2. 2.416 km NNE of Ashford, Washington · 19691 days ago · 0 km deep · 38 km away
  3. 2.16 km NNE of Mossyrock, Washington · 19689 days ago · 32 km deep · 42 km away
  4. 1.816 km SSW of Morton, Washington · 19681 days ago · 19 km deep · 36 km away
  5. 2.127 km S of Morton, Washington · 19674 days ago · 1 km deep · 37 km away
  6. 1.88 km ESE of Enumclaw, Washington · 19670 days ago · 16 km deep · 71 km away
  7. 2.5Washington · 19661 days ago · 2 km deep · 36 km away
  8. 2.335 km SSE of Morton, Washington · 19661 days ago · 3 km deep · 35 km away
  9. 1.98 km E of Ashford, Washington · 19652 days ago · -1 km deep · 25 km away
  10. 2.59 km W of Packwood, Washington · 19645 days ago · 7 km deep · 9 km away
  11. 2.89 km ESE of Ashford, Washington · 19642 days ago · 9 km deep · 20 km away
  12. 1.89 km SW of Wilderness Rim, Washington · 19638 days ago · 7 km deep · 94 km away

Before

  1. 1.926 km SE of Morton, Washington · 19698 days ago · 13 km deep · 23 km away
  2. 2.218 km ESE of Greenwater, Washington · 19702 days ago · 20 km deep · 74 km away
  3. 2.620 km SSE of Mossyrock, Washington · 19702 days ago · 15 km deep · 45 km away
  4. 2.421 km SSE of Mossyrock, Washington · 19702 days ago · 13 km deep · 45 km away
  5. 2.516 km SE of Carbonado, Washington · 19704 days ago · 7 km deep · 47 km away
  6. 2.213 km WSW of Greenwater, Washington · 19706 days ago · 8 km deep · 62 km away
  7. 2.019 km SSE of Mossyrock, Washington · 19708 days ago · 17 km deep · 44 km away
  8. 2.523 km S of Mossyrock, Washington · 19709 days ago · 39 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10854538. Read Tue, Sep 22, 2026, 3:38 PM UTC.