The highest value for dry bulb temperature measured at the observation site during the preceding 24-hour period.

The lowest value for dry bulb temperature measured at the observation site during the preceding 24-hour period.

Blind landing in which the aircraft is observed from the ground by means of radar and directed along a suitable glide path by instructions radioed to the pilot.

Factor derived from local thunderstorm and lightning-caused fire records that adjusts predictions of the basic lightning fire occurrence model to local experience, accounting for factors not addressed directly by the model (e.g., susceptibility of local fuels to ignition by lightning, fuel continuity, topography, regional characteristics of thunderstorms). 

A fire in the crowns of trees in which trees or groups of trees torch, ignited by the passing front of the fire. The torching trees reinforce the spread rate, but these fires are not basically different from surface fires.

A NIMS resource classification that refers to capability of a specific kind of resource to which a metric is applied to designate it as a specific numbered class.

Change of an atmospheric variable (temperature unless specified otherwise) with height.

A geographical area in which a task force/strike team leader or supervisor of a single resource is assigned authority and responsibility for the coordination of resources and implementation of planned tactics. A segment may be a portion of a division or an area inside or outside the perimeter of an incident. Segments are identified with Arabic numbers, i.e., A-1, etc. and are not to be used as radio designators. 

Wind speed within a stand at about eye level.

A written demand for a specific amount of money or other objects of value, other than ordinary obligations incurred for services, supplies, or things.