A weather station that transmits weather observations via GOES satellite to the Wildland Fire Management Information system.

A point, line, or area, at which mass or energy is added to a system, either instantaneously or continuously. Examples of sources in the context of air pollution are as follows: a smoke stack is a point source; a freeway is a line source; field or slash burning are area sources.

The situation in which a helicopter is hovering sufficiently close to the ground to achieve added lift due to the effects of "ground cushion." The HIGE ceiling, for a given gross weight, thus is greater than the HOGE (Hovering Out of Ground Effect) ceiling.

A dry chemical product which is mixed with water to form a fire retardant slurry.

A community that recognizes its risk and takes action before, during and after a fire in order for their community to be more resilient to wildfire. Fire adapted community members are informed and prepared, collaboratively planning and taking action to better live with wildland fire.

An unbroken line of retardant used for constructing a retardant line.

Total retardant or water load dropped all at once. Usually done to knock down a hotspot.

The type of retardant drop selected to cover a ground target. Terms that can specify the type of drop configuration include Salvo Drop and Trail Drop.

Particulate matter of mass median aerodynamic diameter (MMAD) less than or equal to 2.5 micrometers.

Foam with an expansion between 1:1 and 20:1.