Chapter 17 Flashcards
Wildland fires are
most often starts by lightning
Wildland fires are affected by
the rate of fire spread and fire intensity
Rate of fire spread
is dynamic and complex. Fire spread is affected by
types of fuel burning
the slope or aspect at which the fire is burning
water conditions
Fire intensity
describes how hot a fire is burning.
Forest fire
occurs in area containing heavy fuels and higher levels of vegation such as timbers
Brush fire
occurs primarily in mid level vegetation
Groundcover fire
fire primarily involves low level vegetation ( grasses and other light fuels)
Fire in high level vegetation may
initially burn relatively slowly, they produce much more heat than the other two types of wildland fires.
Forest fires: Information should include the areas
Wind speed and directions
Air temperature and probable or expected changes
Humidity
Approaching or expected weather fronts or conditions
Crown fires
fire works it way up to and rapidly spread across the treetops
Timbers
is another high level vegetation fire hazard
Snag
Trees that have fallen but are hung up in other trees
(Brush fires) mid-level vegetation fires
grow and travel faster but the do no generate the high temps that forest fires do.
Brush fires also tend to occur in
more closely to wildland urban interface areas
The primary hazard of brush fire
is the weather