1.7. Rating And Ranking Systems Copy

Jeff Co

Wildfire Rating And Ranking Systems

CFFDRS (The Canadian Forest Fire Danger Rating System)

Developed in Canada using empirical data.
Adapted for use in many other countries.
Takes weather readings and tracks moisture content of forest fuels.
Wildland firefighters should have basic understanding what numbers represent.

Fire Intensity Ranking System

RANK 1: ground fire or creeping surface fire.

RANK 2: low vigor surface fire

RANK 3: moderate vigor surface fire

RANK 4: high vigor surface with candling

RANK 5: extreme surface or continuous crown fire

RANK 6: extreme crown fire

NOTE: Wildland firefighter with handtools or water delivery systems are only effective up to the lower end of Rank 4. Beyond this is UNSAFE and INEFFECTIVE