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7
Very High

landslide Landslide Risk in Seattle, WA

Risk Level: Very High — Score 7/10

FEMA: 7Historical: 10

Key Risk Factors

  • FEMA rates Seattle's county as Relatively High risk
  • Estimated annual loss of $2M from this hazard type
  • 33 events recorded in proximity in recent decades
  • 18 events in the last 12 months indicate ongoing risk
  • Average annual frequency: 4.3 events per year

Last significant event: Landslide - American Cordillera, SW of Seattle, Washington, United States (2025-03-28) — 162,000 people exposed

Highest Risk Cities for Landslides

1
FEMA: 7Historical: 10
2
FEMA: 7Historical: 9
3
FEMA: 7Historical: 10
4
FEMA: 7Historical: 10
5
Seattle, WA
FEMA: 7Historical: 10
6
FEMA: 7Historical: 5
7
FEMA: 7Historical: 10
8
FEMA: 7Historical: 10
9
FEMA: 7Historical: 5
10
FEMA: 5Historical: 0

How Seattle Compares

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Notable Landslide Events Near Seattle

Landslide - American Cordillera, SW of Seattle, Washington, United States

March 27, 2025 WARNING

162,000 people exposed; $27,541M capital exposed

Landslide - American Cordillera, SW of Seattle, Washington, United States

January 31, 2024 WARNING

196,000 people exposed; $49,159M capital exposed

Landslide - Pacific Coast Ranges, SW of Seattle, Washington, United States

December 19, 2024 WARNING

168,030 people exposed; $30,430M capital exposed

Landslide - American Cordillera, SE of Seattle, Washington, United States

December 5, 2023 WARNING

4,370 people exposed; $133M capital exposed

Landslide - American Cordillera, NE of Aberdeen, Washington, United States

February 22, 2025 WARNING

42,304 people exposed; $3,803M capital exposed

Landslide Preparedness Tips

  • 1.Learn the signs of an impending landslide — new cracks, tilting trees, unusual water flow
  • 2.Avoid building near steep slopes, drainage channels, or past slide areas
  • 3.Plant ground cover on slopes to stabilize soil and reduce erosion
  • 4.Create proper drainage around your property to direct water away from slopes
  • 5.Have an evacuation plan ready if you live in a landslide-prone area

Related Pages

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