Washington earthquakes

M1.5 earthquake 12 km WSW of Packwood, Washington

A magnitude 1.5 earthquake struck 12 km WSW of Packwood, Washington on Tue, Oct 4, 1988, 2:24 AM PDT (09:24 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.4 37 km NNE of Amboy, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1988-10-04 09:24:55 UTC
Depth
7.3 km (4.6 mi), shallow
Epicenter
46.561° N, 121.815° 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 0.5 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
70°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.738 km NNE of Amboy, Washington · 13874 days ago · 4 km deep · 49 km away
  2. 1.73 km ESE of Ravensdale, Washington · 13870 days ago · 9 km deep · 87 km away
  3. 2.437 km NNE of Amboy, Washington · 13868 days ago · 0 km deep · 50 km away
  4. 1.88 km WSW of Packwood, Washington · 13868 days ago · 10 km deep · 4 km away
  5. 2.112 km W of Easton, Washington · 13867 days ago · 2 km deep · 85 km away
  6. 1.66 km W of Wilderness Rim, Washington · 13862 days ago · 18 km deep · 97 km away
  7. 1.614 km SSE of Ashford, Washington · 13861 days ago · 8 km deep · 13 km away
  8. 1.6Washington · 13858 days ago · 1 km deep · 20 km away
  9. 1.95 km SSW of Wilderness Rim, Washington · 13851 days ago · 20 km deep · 93 km away
  10. 2.07 km WSW of Wilderness Rim, Washington · 13849 days ago · 19 km deep · 97 km away
  11. 1.519 km NNE of Ashford, Washington · 13846 days ago · 13 km deep · 41 km away
  12. 1.79 km NE of Ashford, Washington · 13846 days ago · 5 km deep · 30 km away
  13. 2.226 km S of Morton, Washington · 13844 days ago · 8 km deep · 41 km away
  14. 1.94 km E of Hobart, Washington · 13843 days ago · 3 km deep · 95 km away
  15. 1.56 km ENE of Mossyrock, Washington · 13843 days ago · 21 km deep · 45 km away
  16. 1.513 km NE of Ashford, WA · 13842 days ago · 9 km deep · 32 km away
  17. 1.63 km NNW of Mossyrock, Washington · 13840 days ago · 19 km deep · 53 km away
  18. 1.98 km SSE of Carbonado, Washington · 13835 days ago · 2 km deep · 52 km away
  19. 2.210 km NE of Nile, Washington · 13828 days ago · 0 km deep · 83 km away
  20. 1.938 km NNE of Amboy, Washington · 13823 days ago · 0 km deep · 49 km away
  21. 1.538 km NE of Amboy, Washington · 13821 days ago · 25 km deep · 49 km away

Before

  1. 1.56 km NNE of Bonney Lake, Washington · 13881 days ago · 18 km deep · 79 km away
  2. 2.333 km NE of Amboy, Washington · 13882 days ago · 0 km deep · 54 km away
  3. 2.43 km WSW of Wilderness Rim, Washington · 13900 days ago · 18 km deep · 97 km away
  4. 1.518 km SSE of Greenwater, Washington · 13905 days ago · 9 km deep · 52 km away
  5. 2.137 km SSE of Morton, Washington · 13905 days ago · 10 km deep · 39 km away
  6. 1.93 km ESE of Packwood, Washington · 13906 days ago · 0 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10232313. Read Mon, Oct 5, 2026, 1:44 AM UTC.