What is a slow-moving fire that burns into the wind called?

A slow-moving fire that burns into the wind is referred to as a backfire. This method is often used in fire management and control to reduce fuel loads and create barriers to more intense wildfires. By burning against the wind, the fire generally moves more slowly, allowing for better control and reducing the risk of it spreading uncontrollably.

The technique takes advantage of wind direction to create a controlled environment, where the heat and flames can be managed more effectively. This is crucial in firefighting strategies, as backfires can help to consume available fuels and create safe zones for firefighters and structures.

In contrast, options like controlled burn refer to a broader category of fire management practices that do not specifically denote slow-moving fires against the wind, while headfire describes flames that burn with the wind, which can spread rapidly and pose greater risks. Flamethrower is not relevant in this context, as it refers to a device that produces a controlled stream of fire rather than a natural fire phenomenon.