S190 Terminology - Bothellfire.org

Unit 1 - Basic Concepts of Wildland Fire

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Unit Objective Define basic terminology used in wildland fire.

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Parts of a Fire

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Origin

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Head

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Flank (Flanks)

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Rear or Heel

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Perimeter

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Finger

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Pocket

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Island

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Spot Fire

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Head

•Left Flank •Right Flank

Rear or Heel •Origin

Which flank is more active? Where would you start to fight this fire?

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What are these two fire parts called?

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Fire Behavior Terms

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Smoldering Fire burning without flame and barely spreading.

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Creeping Fire burning with a low flame and spreading slowly.

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Running Fire spread rapidly with a well defined head.

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Spotting Fire producing sparks or embers that are carried by the wind or convection that start new fires beyond the main fire

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Torching

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Crowning Fire advances from top-to-top of trees or shrubs more or less independently of the surface fire.

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Flare up Sudden acceleration of fire spread or intensity, but of relatively short duration.

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Firewhirl A spinning, moving column of ascending air rising within a vortex and carrying aloft smoke, debris, and flames.

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What type of fire behavior is this?

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What type of fire behavior is this?

*Click on image to play video

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Other useful firefighting terms • • • • • • •

Anchor point Control line Fireline Mop-up Contained Controlled L.C.E.S. 01-26-S190-EP