Fire Danger Index Catastrophic 100 Catastrophic Calculation of
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Fire Danger Index Catastrophic -- 100+ Catastrophic Calculation of the index is based on a number of factors: Extreme 75 to- 99 Severe – 50 74 Weather – drought (days since last rainfall), temperature, wind, relative humidity, soil moisture Severe Very high- -50 25 toto 74 49 Fuels – build up of vegetation and fine fuels, fuel moisture Very High high - 12 - to 2524 to 49 Topography Moderate High – 12 --24 6 to 11 Risk of incidents – lightening strikes, human factors Low to moderate Low - 0 to 5 - 0 to 11
Fire Danger Index Catastrophic -- 100+ Catastrophic Extreme 75 to- 99 Severe – 50 74 Severe Very high- -50 25 toto 74 49 Fires controllable by ground crews. Very High high - 12 - to 2524 to 49 Moderate High – 12 --24 6 to 11 Low to moderate Low - 0 to 5 - 0 to 11 Little risk to people and property.
Fire Danger Index Catastrophic -- 100+ Catastrophic Extreme – 75 - 99 Fire control difficult and often fails. Severe - 50 to 74 People in the path of a fire are unlikely to be killed or seriously injured if they take shelter. Very high - 25 to 49 High – 12 - 24 Low to moderate - 0 to 11 Well-prepared and actively defended homes can offer safety during a fire.
Fire Danger Index Catastrophic -- 100+ Catastrophic Extreme – 75 - 99 Severe - 50 to 74 Very high - 25 to 49 High – 12 - 24 Low to moderate - 0 to 11 Fire will spread rapidly and be difficult to control. There is a possibility that people in the path of a fire will be killed or seriously injured. Some homes may be destroyed. However, well-prepared and actively defended homes can offer safety during a fire.
Fire Danger Index Catastrophic -- 100+ Catastrophic Extreme – 75 - 99 Fire control normally not possible. Rapid spread of fire. Severe - 50 to 74 People in the path of a fire may be killed or seriously injured. Very high - 25 to 49 High – 12 - 24 Low to moderate - 0 to 11 Some homes are likely to be destroyed. However, wellprepared and actively defended homes can offer safety during a fire.
Fire Danger Index Catastrophic -- 100+ Catastrophic Extreme – 75 - 99 Fire control not possible nor safe. Rapid spread of fire, unpredictable. Severe - 50 to 74 People in the path of a fire may be killed or seriously injured. Very high - 25 to 49 High – 12 - 24 Low to moderate - 0 to 11 Many homes are very likely to be destroyed. Only well-constructed, well-prepared and actively defended homes are likely to offer safety during a fire.
Fire Danger Index Catastrophic -- 100+ Catastrophic Extreme – 75 - 99 Severe - 50 to 74 Very high - 25 to 49 High – 12 - 24 Low to moderate - 0 to 11 Fire is uncontrollable, unpredictable and fast moving. Very high level threats to life and property on a large scale. There is a high likelihood that people in the path of a fire will be killed or seriously injured. Many homes are very likely to be destroyed. Even the best prepared homes will not be safe.
