Washington earthquakes

M1.7 earthquake 21 km ENE of Ashford, Washington

A magnitude 1.7 earthquake struck 21 km ENE of Ashford, Washington on Fri, Oct 15, 1999, 2:52 AM PDT (09:52 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.4 35 km SSE of Morton, 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
1.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1999-10-15 09:52:02 UTC
Depth
-0.4 km (-0.3 mi), shallow
Epicenter
46.841° N, 121.775° 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 0.9 km horizontally, 4.5 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
63°
Stations used
8

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 11 in the 30 days before it.

After

  1. 2.435 km SSE of Morton, Washington · 9843 days ago · -2 km deep · 73 km away
  2. 1.64 km NE of North Bend, Washington · 9842 days ago · 16 km deep · 77 km away
  3. 1.610 km NE of Snoqualmie, Washington · 9841 days ago · 14 km deep · 85 km away
  4. 1.51 km WNW of Lea Hill, Washington · 9841 days ago · 63 km deep · 63 km away
  5. 1.77 km SSW of Morton, Washington · 9834 days ago · 18 km deep · 57 km away
  6. 1.714 km NNE of Ashford, Washington · 9833 days ago · 9 km deep · 12 km away
  7. 1.63 km NE of Snoqualmie, Washington · 9827 days ago · 14 km deep · 78 km away
  8. 1.63 km N of Tieton, Washington · 9821 days ago · 9 km deep · 78 km away
  9. 1.75 km NNE of White Swan, Washington · 9807 days ago · 12 km deep · 95 km away
  10. 2.06 km SSE of Vashon, Washington · 9805 days ago · 18 km deep · 79 km away
  11. 1.621 km S of Morton, Washington · 9803 days ago · 7 km deep · 63 km away
  12. 2.113 km W of Greenwater, Washington · 9797 days ago · 14 km deep · 36 km away

Before

  1. 2.120 km ENE of Ashford, Washington · 9855 days ago · -2 km deep · 1 km away
  2. 1.610 km N of Thorp, Washington · 9855 days ago · 3 km deep · 91 km away
  3. 2.512 km WSW of Packwood, Washington · 9862 days ago · 3 km deep · 33 km away
  4. 1.511 km E of Enumclaw, Washington · 9864 days ago · 2 km deep · 43 km away
  5. 1.727 km ENE of Ashford, Washington · 9865 days ago · -2 km deep · 6 km away
  6. 2.01 km ENE of Bellevue, Washington · 9870 days ago · 6 km deep · 92 km away
  7. 2.224 km ENE of Packwood, Washington · 9871 days ago · 5 km deep · 35 km away
  8. 2.19 km NNE of Snoqualmie, Washington · 9875 days ago · 15 km deep · 85 km away
  9. 1.79 km NNE of Snoqualmie, Washington · 9875 days ago · 16 km deep · 85 km away
  10. 2.8Washington · 9875 days ago · 16 km deep · 85 km away
  11. 1.625 km N of Packwood, Washington · 9878 days ago · -3 km deep · 12 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10481268. Read Sat, Oct 3, 2026, 4:38 PM UTC.