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Malaysia Fire Danger Rating System (FDRS)

Fine Fuel Moisture Code (FFMC)


Malaysia


Peninsula


Sabah & Sarawak


FDRS (Google Earth)

 

The FFMC values shown on the map are numerical ratings of the moisture content of litter and other cured fine fuels. The FFMC indicates the relative ease of ignition and flammability of fine fuels. Thus, the FFMC is used as an indicator of ignition potential or the potential for fires to start and spread in the area. (Fine Fuels: Slash fuels, grassland, lalang, bushes etc.).

The meteorological variables used (temperature, relatuve humidity, rainfall, wind speed) are those measured at principal meteorological stations throughout the country.

Please refer to the scale in the table below for interpretation of the FFMC maps:

Class - Ignition Potential Interpretation
Moderate

Moderate probability of fire starting in areas of local dryness.

Extreme Grass fuels highly flammable. Very high probability of fire starting.

 

DUFF Moisture Code (DMC)


Malaysia


Peninsula


Sabah & Sarawak


FDRS (Google Earth)

 

The DMC values shown on the map are numerical ratings of the average moisture content of a loosely compacted surface organic layers (duff). The code indicates fuel consumption of surface organic layer with low bulk density and medium-sized woody material.

Please refer to the scale in the table below for interpretation of the DMC maps:

Class - Ignition Potential Interpretation
Low

Top layers of organic soil are wet.

Moderate Top layers of organic soil are moist.
High Top layers of organic soil becoming dry.
Extreme Top layers of organic soil are dry.

 

Drought Code (DC)


Malaysia


Peninsula


Sabah & Sarawak


FDRS (Google Earth)

 

The DC values shown on the map are indicative values of the moisture content of a deep layer of compact organic matter. Peat soil is an example of deep compact organic soil. The DC is used to indicate the potential for fire to smoulder in peat which is the primary cause of smoke and haze in Southeast Asia. It can also be used as an indicator of difficulty in extinguishing deep burning peat fires as well as an early warning indicator of serious haze events.

Please refer to the scale in the table below for interpretation of the DC maps:
 
Class - Smoke Potential Interpretation
Low Typical wet-season conditions and severe haze periods are unlikely. More than 30 dry days until DC reaches threshold at which point severe haze is highly likely.
Medium Normal mid dry-season conditions. Between 15 and 30 dry days until DC reaches threshold. Burning should be regulated and monitored as usual.
High Normal dry season peak conditions. Between 5 and 15 dry days until DC reaches threshold. All burning in peatlands should be restricted. Weather forecast and seasonal rainfall assessments should be monitored closely for signs of an extended dry season.
Extreme Approaching disaster-level drought conditions. Less than 5 dry days until DC reaches threshold, at which point severe haze is highly likely. Complete burning restriction should be enforce.
 
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