Fire weather index system

                                                                                                                         





The Canadian Forest Fire Danger Rating System (CFFDRS) system provides a uniform, numeric method of rating fire danger throughout an area; it is dependent on weather only and does not consider differences in risk, fuel, or topography. Its six components are:



 
DMC - Duff Moisture Code


A numerical rating of the average moisture content of loosely compacted organic layers of moderate depth. This code gives an indication of fuel consumption in moderate duff layers and medium-size woody material.
 


FFMC - Fine Fuel Moisture Code

A numerical rating of the moisture content of litter and other cured fine fuels. This code is an indicator of the relative ease of ignition and flammability of fine fuel.
 

DC - Drought Code

A numerical rating of the average moisture content of deep, compact, organic layers. This code is a useful indicator of seasonal drought effects on forest fuels, and amount of smouldering in deep duff layers and large logs.

 
ISI - Initial Spread Index

A numerical rating of the expected rate of fire spread. It combines the effects of wind and FFMC on rate of spread without the influence of variable quantities of fuel.
 

BUI - Build Up Index

A numerical rating of the total amount of fuel available for combustion that combines DMC and DC.
 

FWI - Fire Weather Index

A numerical rating of fire intensity that combines ISI and BUI. It is suitable as a general index of fire danger throughout forested and rural areas.

More information on the fire wether index system can be found at Fire weather index


Fire Weather index is updated every day by our server useing weather station readings with no user input.