This dataset is the Housing Unit Impact (HUImpact) raster for the United States. It is part of the data publication Wildfire Risk to Communities: Spatial datasets of wildfire risk for populated areas in the United States. HUImpact is an index that represents the relative potential impact of fire to housing units at any pixel, if a fire occurs there. It incorporates the general consequences of fire on a home as a function of fire intensity and uses flame length probabilities from wildfire modeling to capture likely intensity of fire. HUImpact does not include the likelihood of fire occurring, and it does not reflect mitigations done to individual structures that would influence susceptibility. It is conceptually similar to Conditional Risk to Potential Structures in the companion data publication (Scott et al. 2020), but also incorporates housing unit count and exposure type. Pixels where the housing unit density raster is zero are NoData in the HUImpact raster.Metadata and Downloads.Note:�Pixel values in this image service have been altered from the original raster dataset due to data requirements in web services. The service is intended primarily for data visualization. Relative values and spatial patterns have been largely preserved in the service, but users are encouraged to download the source data for quantitative analysis.