LESSON 3 - EFFECTS OF WEATHER, TOPOGRAPHY AND FUELS ON FIRE BEHAVIOR
Wildland fire is influenced by three natural elements: Weather,Topography and Fuels
There must be sufficient quantity of fuel physically arranged in a manner conducive to combustion; the moisture content of the critical fuel must be low enough to permit combustion; and there must be an ignition agent capable of supplying sufficient heat at a high enough temperature to ignite the fuel.
Moisture, or lack of, will determine if a fuel can ignite and will influence the intensity level of a fire once it has begun. Conditions must be monitored regularly to understand the impact that weather has on fire behaviour and for that reason weather conditions are recorded on a daily basis at 1300 hrs. ADT.
The following weather readings are taken at various stations across Nova Scotia:
Relative humidity, Precipitation, Temperature, Wind speed and direction.