Be brief
Concise
This is the most constant of the three fire environment components
Topography
Lower RH, Higher temp, less fuel loading, primarily Grass and Shrub fuel types, and snowmelt dates are earlier.
South/ South West Aspect
Characteristics
Moisture
Temperature
Three factors of the fire enviroment that involve fuels
Topgraphy, Fuels, and Weather
What is the Fire Behaivor Triangle?
Be unmistakeable in your message
Clarity
One factor that affects rate of spread
Wind speed
Steepness of slope
Changes in fuel type
Higher RH, Lower temps, Heavier fuel loading, Primarily Timber and woodland fuel types, snow melt dates are later.
North/ North East Aspect
Ground
Surface
Aeriel
This atmospheric layer is where almost all weather occurs within
What is the troposphere?
Self-assurance in information you are sharing
Confidence
Ground fuel is heated by...
Conduction and radiation
Preheating of fuels due to convective and radiative heat and smoke. Fire behavior, ROS, and spotting can decrease or increase as the fire reaches a ridgetop and encounters opposing upslope winds.
Upslope Fire Behavior
Physical and chemical
Catagory of fuel characteristics that remain constant
What is 2 to 4 hours ?
Handle your voice inflection
Control
Rate of heat released per foot of fire front per second
Fireline intensity
slower creeping backing fire, can increase with afternoon/ evening changes in wind direction. Fire Behavior and ROS may increase as the fire interacts with a slope reversal at the bottom.
Downslope Fire behavior
Grass
Shrub
Timber Litter
Slash
Four major fuel groups
What is the #1 firefighting order?
Practice speaking on the radio to develop skills
Capability
A state of the atmosphere in which the vertical distribution of temperature is such that an air particle will resist vertical displacement from its level
Stability
Canyon walls that come together in a box funnels air and smoke like a wood stove, increasing fire behavior and spotting
The Chimney Effect in Canyon Topography
ROS 18 TO 75 ch/hr
Shrub fire behavior characteristics
Too much of these gases, and the Earth would become unbearably hot
What are greenhouse gases ?