What is the growth stage in the context of fire behavior?

The growth stage in the context of fire behavior is characterized by the phase where the fire is transitioning from its initial ignition to a more established state. During this stage, the combustion area expands both vertically and horizontally. As the fire gains access to additional fuels—whether from surrounding materials, increased airflow, or other factors—it begins to produce greater amounts of heat and smoke. This amplification allows the fire to reach a higher intensity, and it can start to spread more rapidly.

Understanding the growth stage is crucial for fire protection professionals as it highlights the urgency for intervention. Recognizing this phase enables firefighters and responders to implement strategies to control and mitigate the fire before it reaches the fully developed stage, which poses significantly greater risks to both safety and property.