What does it indicate when there is an increase and/or change in wind direction?

An increase and/or change in wind direction is critical for understanding fire behavior, and when this occurs, it can lead to unpredictability in how a fire will act. Wind significantly influences the spread of fire, as it can carry embers far ahead of the main fire front, causing spot fires to ignite in new areas. Changes in wind direction can shift the fire towards new fuel sources or can cause a fire to intensify rapidly, complicating control efforts and making the situation more dangerous for firefighters and nearby communities. This unpredictable nature means that firefighters must remain vigilant and adaptable when faced with shifting winds, as they can dramatically alter the dynamics of a fire.