What are the main characteristics of the freeburn stage of a fire?

The freeburn stage of a fire is characterized by the production of hot and dense smoke. During this stage, the fire has ample oxygen supply, allowing it to burn more vigorously. This results in higher temperatures and the generation of thick smoke, which can contain numerous toxic gases and particulates. The density of the smoke can severely reduce visibility and create hazardous conditions for anyone attempting to navigate through the area or conduct firefighting efforts.

Understanding this stage is crucial for effective fire response and safety measures. While the other characteristics might apply to other phases of fire development, they do not accurately reflect the intense conditions present during freeburn. For instance, conditions like good combustion with low heat or little smoke are typical of earlier or smoldering phases rather than the active and dangerous freeburn stage.