1. Ignition sources such as open flames, sparks, electrical equipment, or hot surfaces 2. Combustible materials such as paper, wood, fabrics, or flammable liquids 3. Oxygen supply that allows the fire to burn and spread 4. Heat generated from a variety of sources, including friction, chemical reactions, or radiant heat 5. Poor housekeeping practices that allow for the accumulation of flammable materials 6. Faulty or damaged electrical wiring or equipment 7. Smoking materials such as cigarettes or matches 8. Arson or intentional acts of vandalism.
- Lightning strikes - Sun's rays through magnifying glass or broken glass - Volcanic eruptions - Spontaneous combustion of dry vegetation (e.g., hay, sawdust) - Drought conditions
Environmental Factors:
- High temperatures - Low humidity - Dry vegetation - Strong winds - Terrain with steep slopes and abundant fuel - Closed-in areas with poor ventilation
Accidental Factors:
- Vehicle accidents involving fuel spills - Explosions - Chemical reactions - Friction from machinery - Sparks from power lines or transformers
Other Factors:
- Ember dispersal from existing fires - Thermal radiation from adjacent fires - Pyrophoric materials that spontaneously ignite in air - Flares or other signaling devices