WILDFIRE: LATEST LEARNINGS- v01.6

WILDFIRE: LATEST LEARNINGS

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General learning outcome:

SPECIFIC FIRE BEHAVIOUR:

Specific learning outcome:

Vorticity-driven Lateral Spread is a major factor in rugged landscapes.

Topic:

The process of Vorticity-driven Lateral Spread, and the setting within which it forms.

General Awareness for All Fireground Personnel


Vorticity-driven Lateral Spread occurs when, during conditions of elevated FDI, fire enters a lee-slope eddy or a valley eddy.
With the severity of the fire weather and the thermal heating within the eddy two things ensue:
  1. embers are shed from the top of the eddy, igniting the landscape for some distance downwind; and
  2. the fire within the eddy expands sideways, expanding the area affected by process 1 as well.

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This website is dedicated to bringing forward the latest research findings. They are provided to allow firefighters to be made aware of critical safety issues ahead of the material being included in the national training curriculum.
Material prepared by Rick McRae for AFAC Research Dissemination Pilot Study, March 2012.