What is a key characteristic of flashover in firefighting?

Flashover is a critical phenomenon in firefighting that represents a rapid transition from the growth stage of a fire to the fully developed stage. During this event, the temperature in a confined space rises dramatically, allowing combustible materials to ignite almost simultaneously. This drastic change happens due to the buildup of heat, which can lead to the near-instantaneous ignition of all combustible contents in the room, creating an extremely dangerous and intense fire situation.

The characteristics of flashover are vital for firefighters to understand because it significantly alters the behavior of the fire and can compromise safety during firefighting operations. Recognizing the signs of impending flashover, such as rapid heat buildup and changing smoke behavior, is essential when determining strategies for attack and escape. Understanding this unique transition helps responders anticipate the development of the fire and execute tactics effectively to manage the situation safely.