The State of California's Department of Forestry and Fire Protection produces fire threat maps that display the potential for fire events across the state. These maps are based upon fuel rank and the frequency of fires in a given area. Factors used to determine fule rank include the type of fuel present in the area, slope of the land and the density of brush and trees. Areas on this map in deep red have an extremely high threat of fire while yellow areas have a low threat of fire. Gray areas are considered to be lacking in adequate fuel.
This map and others produced by the Department of Forestry and Fire Protection can be seen at the California Department of Forestry Website.