What does the term "rear of a fire" refer to?

The term "rear of a fire" refers to the slowest spreading part of the fire edge. This is the area where the fire experiences less intensity and often moves at a slower pace compared to other sections. Understanding the dynamics of a fire's behavior, including the characteristics of its different sections, is crucial for effective firefighting and safety strategies.

In wildland fire behavior, the rear of the fire tends to be where flames are less active, allowing firefighters a better opportunity to control the fire and potentially set up fire lines or other protective measures. This part of the fire may also serve as a safe zone for crews, as it presents fewer hazards than more aggressive areas, particularly the head or flank of the fire where it is actively spreading with the wind or uphill. Recognizing the significance of this area is important for operational planning during fire suppression efforts.