Definition:
Flame Height: The average maximum vertical extension of flames at the leading edge of the fire front.
Flame Length: The distance between the flame tip and the midpoint of the flame depth at the base of the flame.
Flaming Front: The zone of a moving fire where the combustion is primarily flaming. Also called fire front.
Flanks of a Fire: The parts of a fire’s perimeter that are roughly parallel to the main direction of spread.
Flare-up: Any sudden acceleration of fire spread or intensification of a fire.
Flash Fuels: Fuels such as grass, leaves, draped pine needles, fern, tree moss and some kinds of slash, that ignite readily and are consumed rapidly when dry. Also called fine fuels.
Fuel: Combustible material. Includes, vegetation, such as grass, leaves, ground litter, plants, shrubs and trees, that feed a fire.
Fuel Loading: The amount of fuel present expressed quantitatively in terms of weight of fuel per unit area.
Fuel Moisture (Content): The quantity of moisture in fuel expressed as a percentage of the weight when thoroughly dried at 212 degrees Fahrenheit.
Fuel Reduction: Manipulating fuels to reduce the likelihood of ignition and/or to lessen potential damage and resistance to control.
Fuel Type: An identifiable association of fuel elements of a distinctive plant species, form, size, arrangement, or other characteristics that will cause a predictable rate of fire spread or difficulty of control under specified weather conditions.
Flame Height: The average maximum vertical extension of flames at the leading edge of the fire front.
Flame Length: The distance between the flame tip and the midpoint of the flame depth at the base of the flame.
Flaming Front: The zone of a moving fire where the combustion is primarily flaming. Also called fire front.
Flanks of a Fire: The parts of a fire’s perimeter that are roughly parallel to the main direction of spread.
Flare-up: Any sudden acceleration of fire spread or intensification of a fire.
Flash Fuels: Fuels such as grass, leaves, draped pine needles, fern, tree moss and some kinds of slash, that ignite readily and are consumed rapidly when dry. Also called fine fuels.
Fuel: Combustible material. Includes, vegetation, such as grass, leaves, ground litter, plants, shrubs and trees, that feed a fire.
Fuel Loading: The amount of fuel present expressed quantitatively in terms of weight of fuel per unit area.
Fuel Moisture (Content): The quantity of moisture in fuel expressed as a percentage of the weight when thoroughly dried at 212 degrees Fahrenheit.
Fuel Reduction: Manipulating fuels to reduce the likelihood of ignition and/or to lessen potential damage and resistance to control.
Fuel Type: An identifiable association of fuel elements of a distinctive plant species, form, size, arrangement, or other characteristics that will cause a predictable rate of fire spread or difficulty of control under specified weather conditions.
