Washington earthquakes

M1.6 earthquake 2 km N of Gorst, Washington

A magnitude 1.6 earthquake struck 2 km N of Gorst, Washington on Mon, Oct 4, 1999, 12:04 PM PDT (19:04 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M1.7 1 km NNE of Bothell, Washington. This one was a foreshock.

Gorst 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
1.6 (md), micro
Local time
UTC
1999-10-04 19:04:13 UTC
Depth
-0.5 km (-0.3 mi), shallow
Epicenter
47.545° N, 122.707° 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 0.2 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
120°
Stations used
5

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 10 in the 30 days before it.

After

  1. 1.71 km NNE of Bothell, Washington · 9837 days ago · 27 km deep · 46 km away
  2. 1.63 km NE of Woods Creek, Washington · 9834 days ago · -1 km deep · 74 km away
  3. 1.64 km NE of North Bend, Washington · 9832 days ago · 16 km deep · 72 km away
  4. 1.610 km NE of Snoqualmie, Washington · 9831 days ago · 14 km deep · 72 km away
  5. 1.51 km WNW of Lea Hill, Washington · 9831 days ago · 63 km deep · 45 km away
  6. 1.714 km NNE of Ashford, Washington · 9824 days ago · 9 km deep · 96 km away
  7. 1.63 km NE of Snoqualmie, Washington · 9817 days ago · 14 km deep · 69 km away
  8. 2.52 km SW of Monroe North, Washington · 9808 days ago · 19 km deep · 64 km away
  9. 2.06 km SSE of Vashon, Washington · 9796 days ago · 18 km deep · 26 km away

Before

  1. 1.511 km E of Enumclaw, Washington · 9855 days ago · 2 km deep · 74 km away
  2. 2.01 km ENE of Bellevue, Washington · 9860 days ago · 6 km deep · 40 km away
  3. 2.19 km NNE of Snoqualmie, Washington · 9865 days ago · 15 km deep · 71 km away
  4. 1.79 km NNE of Snoqualmie, Washington · 9865 days ago · 16 km deep · 70 km away
  5. 2.8Washington · 9865 days ago · 16 km deep · 71 km away
  6. 2.23 km ESE of Indianola, Washington · 9872 days ago · 22 km deep · 27 km away
  7. 1.633 km N of Amanda Park, Washington · 9873 days ago · 36 km deep · 91 km away
  8. 1.73 km S of Monroe, Washington · 9880 days ago · 2 km deep · 64 km away
  9. 2.85 km SSW of Shelton, Washington · 9880 days ago · 46 km deep · 52 km away
  10. 1.88 km SSW of Sultan, Washington · 9880 days ago · 7 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10477028. Read Wed, Sep 23, 2026, 7:22 PM UTC.