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Grays Harbor County Hypothetical Cascadia Subduction Zone


Tsunami Wave Simulation (Grays Harbor County)

Tsunami wave simulation for Grays Harbor, Washington, from a hypothetical magnitude 9.0 earthquake (L1) scenario on the Cascadia subduction zone. Developed by Washington Geological Survey hazard geologists.

Tsunami Wave Simulation (Pacific Beach)
Tsunami Wave Simulation (Taholah)

Tsunami Current Velocity Simulation (Grays Harbor County)

Tsunami current velocity simulation for Grays Harbor, Washington, from a hypothetical magnitude 9.0 earthquake (L1) scenario on the Cascadia subduction zone. Developed by Washington Geological Survey hazard geologists.

Tsunami Current Velocity Simulation (Pacific Beach)
Tsunami Current Velocity Simulation (Taholah)

Tsunami Evacuation Walk Maps

Tsunami Inundation Modeling [2018 / 2022]
By The Washington State Department of Natural Resources

Tsunami Hazard Maps of Southwest Washington - Model Results from a ~2,500-Year Cascadia Subduction Zone Earthquake Scenario [May 2018]:

Tsunami Hazard Maps of the Olympic Peninsula - Model Results from an Extended L1 Mw 9.0 Cascadia Subduction Zone Megathrust Earthquake Scenario [Jan 2022]:

Other Resources:
Geologic Hazard Maps
   * Tsunami Evacuation
   * Tsunami Inundation
   * Shallow Landslide Hazard Forecast Map
   * Active Faults and Earthquakes in Washington State
   * Seismic Scenario Catalog
   * NEHRP Site Class and Liquefaction Susceptibility
   * Seismic Design Categories
   * Hazardous Minerals
   * Lahar Hazards
   * Landslides and Landforms
   * Inactive and Abandoned Mines