Wildfires caused by smokers from matches, lighters, tobacco, or other smoking material.

Horizontal visibility observed at the ground.

An additive that reduces the surface tension of water (producing wet water) causing it to spread and penetrate more effectively and which produces foam through mechanical means.

A thermal trauma that maybe a superficial, partial thickness or full thickness burn.

Instructional aid in which the sides of a triangle are used to represent the three factors (oxygen, heat, fuel) necessary for combustion and flame production; removal of any of the three factors causes flame production to cease.

Direction at peak wind speed.

The time when all observable combustion has ceased or there is no risk of the fire again becoming active and requiring additional control or management actions. All management activities directly relating to suppression (including mop-up), monitoring, or burning efforts have concluded; however, there may be secondary management efforts, such as burned area rehabilitation or hazard mitigation, still in process.

A general term referring to the historic fire occurrence of a given geographic area.

Allowable aircraft cabin load, in pounds, with full fuel and pilot in calm air at standard atmosphere.

A meteorological station specially equipped to measure weather elements that have an important effect on fire behavior.