Fire Behavior Normals

Crown Fraction Burned (CFB) is the predicted fraction of the tree crowns consumed by the fire. It is based on Buildup Index, Foliar Moisture Content, Surface Fuel Consumption, and Rate of Spread.

More information about the Canadian Forest Fire Weather Index (FWI) System is available in the Background Information.

Fire Behavior Normals represent the average value of a fire behavior element over the 30-year period from 1981 to 2010.