This page provides information on the Hazus Hurricane Model and success stories. This page is intended for Hazus users, specifically the Hurricane Wind Model for disaster mitigation and planning efforts.
Features in Hazus Hurricane Model
The Hazus Hurricane Model allows users to estimate the economic and social losses from hurricane winds and storm surge. State and local officials, can use the information provided by the hurricane model to evaluate, plan for and mitigate the effects of hurricane winds and surge.
The Hazus Hurricane Model makes use of an existing state-of-the-art windfield model, which has been calibrated and validated using full-scale hurricane data. The model incorporates sea surface temperature in the boundary layer analysis and calculates wind speed as a function of central pressure, translation speed and surface roughness.
The Hazus Hurricane Model is an improvement over existing loss estimation models because it uses a wind hazard-load-damage-loss framework. The hurricane wind model addresses wind pressure, windborne debris, duration/fatigue and rain. It includes the following features:
- A building classification system that depends on the characteristics of the building envelope and building frame.
- The capability to compute damage based on building classes and the effects of rain and progressive failure.
- The capability to compute damage to contents and building interior.
- The capability to estimate tree blow down and structure debris quantities.
- Loss estimates that include direct and indirect economic loss, shelter requirements and casualties.
- Modules that facilitate future assessment of mitigation, benefit-cost and building code issues.
The hurricane surge model incorporates the National Weather Service Sea, Lake and Overland Surges from Hurricanes (SLOSH) model, the Delft University of Technology Simulating WAves Nearshore (SWAN) model, and the Hazus coastal flood model to simulate storm surge for historical, Hurrevac, and manual hurricanes. Hazus combines the flood and wind losses for general building stock so that the losses are not double counted.
Hazus Hurricane Model Applications
FEMA, states and local communities have used the Hurricane Wind Model for risk assessments, mitigation planning and support for disaster operations, including:
- Scenario development for the Florida Catastrophic Hurricane Planning Initiative (2007)
- State Enhanced Hazard Mitigation Plan (Florida, 2007)
- Hurricane evacuation planning in Florida, North Carolina and Hawaii (2006)