What term describes a narrow extension of fire projected out of the main fire?

The term "finger" refers to a narrow extension of fire that projects out from the main body of flames. This term is often used in fire behavior discussions, especially when analyzing how fires can spread and threaten new areas. A "finger" can indicate the potential for rapid expansion, making it essential for firefighters to monitor and assess in order to effectively control the fire and protect surrounding structures and natural resources.

In contrast, a "pocket" might refer to an isolated area of fire less connected to the main body, while an "island" describes a section of land surrounded by fire but not currently burning. "Spot fire" typically refers to individual small fires that ignite away from the main fire, often as a result of ember activity. Each of these terms carries its own specific implications in fire management and strategy but does not accurately describe the particular feature indicated by "finger."