Manipulation, including combustion, or removal of fuels to reduce the likelihood of ignition and/or to lessen potential damage and resistance to control.

A not to scale drawing.

A causative agent.

Resultant of all fire danger factors that are relatively unchanging in a specific area (e.g., resource values at risk, topography, fuel type, exposure to prevailing wind).

Green-up for the 1978 version of NFDRS model is defined as the beginning of a new cycle of plant growth. Green-up usually occurs once a year, except in desert areas where rainy periods can produce a flush of new growth more than once a year. Green-up may be signaled at different dates for different fuel models. Green-up should not be started when the first flush of green occurs in the area. Instead, the vegetation that will be the fire problem (represented by the NFDRS fuel model associated with the weather station) when it matures and cures should be identified.

The depth of the fire front.

Lowest temperature at which sustained combustion can be initiated for a specified substance.

A discrete area within a larger prescribed or fire use project.

The planned number of years between prescribed fires on a specified area.

Any non-structure fire that occurs in vegetation or natural fuels. Includes wildfires and prescribed fires.