Dry, hot and windy weather increases the likelihood of a major wildfire. These conditions make ignition easier, allow fuels to burn more rapidly, and increase fire intensity. High windspeeds, in particular, can transform a small, easily controllable fire into a catastrophic event in a matter of minutes. Of the topographic features, the steepeness of slope is among the most influential on fire behavior. As the steepness of slope increases, the faster a fire will spread.
Fuel is required for any fire to burn.
Houses, when involved in a wildfire, become a source of fuel.