What is the first step in reading smoke conditions?

The first step in reading smoke conditions is to determine the smoke value, velocity, density, and color. This approach provides a comprehensive understanding of the combustion process and fire behavior. Each aspect of smoke gives critical insight; for instance, the color indicates the type of materials burning—black smoke can indicate oil or plastics, while white smoke may arise from water vapor or incomplete combustion.

Additionally, evaluating the density of smoke helps assess the intensity and heat of the fire, as denser smoke can suggest a more significant or more active combustion event. Understanding the velocity of smoke can also indicate whether the fire is growing or being influenced by wind. This foundational knowledge is crucial for making informed decisions about firefighting strategies, including life safety, potential fire spread, and resource allocation.

Other options, while important, come into play after gaining this initial assessment of smoke characteristics. Evaluating temperature, assessing direction, and identifying toxic gases are essential steps that follow once the fire dynamics are thoroughly understood from the smoke analysis.