The 2016 National Fire Danger Rating System (NFDRS16) is a categorical index used in the US to provide a measure of the relative seriousness of burning conditions and threat of fire. NFDRS is a complex set of equations with user-defined constants and measured variables to calculate the daily index and components that can be used for decision support. It considers antecedent weather, fuel types, and live and dead fuel moisture.
Each day during the fire season, national maps of selected fire weather and Fire Danger components of the National Fire Danger Rating System are produced by the Wildland Fire Assessment System (WFAS-MAPS), located at the USDA Forest Service Rocky Mountain Research Station in Missoula, Montana. FireRisk represents the severe weather fire NFDRS 2016 index daily as reference layers.
This data is included because it provides a good reference point for fire weather conditions to compare against the LFM datasets. This is typically used when assessing the results of on-demand fire spread predictions.