Washington earthquakes

M1.8 earthquake 4 km WNW of Cliffdell, Washington

A magnitude 1.8 earthquake struck 4 km WNW of Cliffdell, Washington on Sat, Sep 22, 1990, 12:26 AM PDT (07:26 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.8 12 km ENE of Sunnyslope, 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
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-09-22 07:26:05 UTC
Depth
-1.0 km (-0.6 mi), shallow
Epicenter
46.966° N, 121.125° 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 0.6 km horizontally, 3.8 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
172°
Stations used
11

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 11 in the 30 days before it.

After

  1. 1.83 km SW of Snoqualmie, Washington · 13140 days ago · 19 km deep · 81 km away
  2. 2.027 km ENE of Ashford, Washington · 13139 days ago · -2 km deep · 46 km away
  3. 2.812 km ENE of Sunnyslope, Washington · 13127 days ago · 11 km deep · 95 km away
  4. 1.724 km SE of Carbonado, Washington · 13125 days ago · -1 km deep · 51 km away
  5. 2.315 km ESE of Kapowsin, Washington · 13121 days ago · 6 km deep · 71 km away
  6. 1.615 km ESE of Kapowsin, Washington · 13121 days ago · 6 km deep · 71 km away
  7. 1.52 km NNE of Maple Heights-Lake Desire, Washington · 13120 days ago · 17 km deep · 91 km away
  8. 1.926 km ENE of Ashford, Washington · 13118 days ago · -2 km deep · 48 km away
  9. 1.723 km ENE of Ashford, Washington · 13106 days ago · -2 km deep · 49 km away

Before

  1. 1.85 km WSW of Snoqualmie, Washington · 13162 days ago · 20 km deep · 84 km away
  2. 1.525 km ENE of Ashford, Washington · 13162 days ago · -2 km deep · 48 km away
  3. 2.7Washington · 13166 days ago · 20 km deep · 57 km away
  4. 1.524 km ENE of Ashford, Washington · 13170 days ago · -2 km deep · 49 km away
  5. 1.717 km ENE of Ashford, Washington · 13171 days ago · -1 km deep · 55 km away
  6. 1.85 km SSW of Fall City, Washington · 13178 days ago · 14 km deep · 86 km away
  7. 2.224 km N of Packwood, Washington · 13179 days ago · -1 km deep · 47 km away
  8. 1.95 km WSW of Black Diamond, Washington · 13180 days ago · 20 km deep · 80 km away
  9. 2.02 km SSW of North Bend, Washington · 13182 days ago · -1 km deep · 77 km away
  10. 1.517 km SSW of Skykomish, Washington · 13185 days ago · 95 km deep · 73 km away
  11. 1.723 km N of Packwood, Washington · 13186 days ago · 3 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10265018. Read Fri, Oct 2, 2026, 2:41 AM UTC.