Washington earthquakes

M1.5 earthquake 4 km NE of Cliffdell, Washington

A magnitude 1.5 earthquake struck 4 km NE of Cliffdell, Washington on Wed, Aug 25, 1999, 2:03 AM PDT (09:03 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.8 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
1.5 (md), micro
Local time
UTC
1999-08-25 09:03:33 UTC
Depth
-1.1 km (-0.7 mi), shallow
Epicenter
46.971° N, 121.022° 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 0.1 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
82°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.62 km WNW of Mirrormont, Washington · 9895 days ago · 17 km deep · 94 km away
  2. 1.628 km ENE of Ashford, Washington · 9885 days ago · -3 km deep · 52 km away
  3. 2.610 km N of Sunnyslope, Washington · 9884 days ago · 7 km deep · 84 km away
  4. 1.625 km N of Packwood, Washington · 9875 days ago · -3 km deep · 47 km away
  5. 2.77 km N of Outlook, Washington · 9872 days ago · 11 km deep · 95 km away
  6. 2.8Washington · 9871 days ago · 16 km deep · 90 km away
  7. 1.79 km NNE of Snoqualmie, Washington · 9871 days ago · 16 km deep · 90 km away
  8. 2.19 km NNE of Snoqualmie, Washington · 9871 days ago · 15 km deep · 90 km away
  9. 1.66 km N of Outlook, Washington · 9871 days ago · 7 km deep · 95 km away
  10. 1.57 km N of Outlook, Washington · 9869 days ago · 11 km deep · 95 km away
  11. 2.224 km ENE of Packwood, Washington · 9867 days ago · 5 km deep · 42 km away
  12. 2.23 km S of Entiat, Washington · 9867 days ago · 0 km deep · 97 km away
  13. 1.727 km ENE of Ashford, Washington · 9861 days ago · -2 km deep · 53 km away
  14. 1.511 km E of Enumclaw, Washington · 9861 days ago · 2 km deep · 68 km away
  15. 2.512 km WSW of Packwood, Washington · 9858 days ago · 3 km deep · 77 km away
  16. 1.610 km N of Thorp, Washington · 9851 days ago · 3 km deep · 34 km away
  17. 2.120 km ENE of Ashford, Washington · 9851 days ago · -2 km deep · 60 km away
  18. 1.721 km ENE of Ashford, Washington · 9846 days ago · 0 km deep · 59 km away
  19. 2.88 km WSW of Entiat, Washington · 9842 days ago · 4 km deep · 93 km away
  20. 1.64 km NE of North Bend, Washington · 9838 days ago · 16 km deep · 83 km away

Before

  1. 1.731 km SSE of Greenwater, Washington · 9898 days ago · -1 km deep · 38 km away
  2. 1.95 km ENE of Bonney Lake, Washington · 9910 days ago · 8 km deep · 87 km away
  3. 1.516 km SE of Carbonado, Washington · 9917 days ago · 7 km deep · 67 km away
  4. 1.616 km SE of Carbonado, Washington · 9917 days ago · 6 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10485253. Read Tue, Sep 29, 2026, 9:15 PM UTC.