Washington earthquakes

M1.5 earthquake 6 km SSW of Quilcene, Washington

A magnitude 1.5 earthquake struck 6 km SSW of Quilcene, Washington on Sat, Oct 20, 2001, 8:47 PM PDT (03:47 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M2.3 1 km SW of Lake Marcel-Stillwater, Washington. This one was a foreshock.

Quilcene 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), micro
Local time
UTC
2001-10-21 03:47:59 UTC
Depth
50.0 km (31.1 mi), shallow
Epicenter
47.769° N, 122.916° 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, 0.7 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
69°
Stations used
12

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 5 in the 30 days before it.

After

  1. 1.84 km SSE of Lake McMurray, Washington · 9110 days ago · 9 km deep · 77 km away
  2. 2.13 km ENE of Union Hill-Novelty Hill, Washington · 9105 days ago · 1 km deep · 71 km away
  3. 2.31 km SW of Lake Marcel-Stillwater, Washington · 9103 days ago · 25 km deep · 74 km away
  4. 1.92 km S of Lake Roesiger, Washington · 9098 days ago · 11 km deep · 77 km away
  5. 1.72 km E of Granite Falls, Washington · 9093 days ago · -1 km deep · 81 km away
  6. 1.71 km N of Woods Creek, Washington · 9084 days ago · 6 km deep · 78 km away
  7. 2.1Washington · 9066 days ago · 22 km deep · 63 km away
  8. 1.83 km ENE of Granite Falls, Washington · 9065 days ago · -1 km deep · 82 km away
  9. 1.75 km SE of Quilcene, Washington · 9065 days ago · 25 km deep · 7 km away
  10. 1.88 km NNE of Lake Marcel-Stillwater, Washington · 9063 days ago · 8 km deep · 79 km away
  11. 1.88 km NNE of Lake Marcel-Stillwater, Washington · 9063 days ago · 8 km deep · 79 km away
  12. 2.06 km SE of Orcas, Washington · 9060 days ago · 11 km deep · 88 km away

Before

  1. 1.92 km ESE of Monroe, Washington · 9114 days ago · 24 km deep · 73 km away
  2. 2.93 km NNE of Jamestown, Washington · 9116 days ago · 44 km deep · 44 km away
  3. 1.54 km SSE of Lake McMurray, Washington · 9128 days ago · 8 km deep · 77 km away
  4. 1.75 km S of Lake McMurray, Washington · 9139 days ago · 4 km deep · 76 km away
  5. 2.14 km SSE of Lake McMurray, Washington · 9140 days ago · 6 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10542888. Read Wed, Sep 30, 2026, 1:07 PM UTC.